Details of the Researcher

PHOTO

Tadahiro Hayasaka
Section
Graduate School of Science
Job title
Professor
Degree
Profile
1988年3月東北大学大学院理学研究科修了 理学博士
1990年11月東北大学理学部助手
1994年5月東北大学理学部助教授
2001年4月総合地球環境学研究所教授
2008年7月東北大学大学院理学研究科教授

Research History 1

  • 2024/10 - Present
    Tohoku University

Education 2

  • Tohoku University Graduate School, Division of Natural Science

    - 1988/03

  • Tohoku University Faculty of Science

    - 1982/03/25

Committee Memberships 42

  • 衛星地球観測コンソーシアム 副会長

    2024/07 - Present

  • 人間文化研究機構・総合地球環境学研究所 研究プログラム評価委員会委員

    2023/07 - Present

  • Consortium for Satellite Earth Observation; CONSEO secretary

    2022/09 - Present

  • 自然科学研究機構 教育研究評議会評議員

    2020/04 - Present

  • 九州大学応用力学研究所 応用力学拠点運営委員会委員

    2020/04 - Present

  • 日本気象学会 理事

    2018/05 - Present

  • 日本気象学会・学術委員会 副委員長

    2016/07 - Present

  • 日本学術会議・地球惑星科学委員会・地球惑星圏分科会・地球観測の将来構想に関する検討小委員会 委員

    2013/11 - Present

  • 気象業務の評価に関する懇談会(気象庁) 委員

    2013/04 - Present

  • 東京大学大気海洋研究所 協議会委員

    2020/04 - 2025/03

  • Advances in Atmospheric Sciences 編集委員

    2016/01 - 2022/10

  • 日本気象学会「気象研究ノート」編集委員会 委員

    1996/07 - 2022/05

  • 千葉大学 千葉大学環境リモートセンシング研究センター外部評価委員

    2020/04 - 2021/03

  • JAXA GCOM-W及びGPM/DPR 外部評価委員会 委員

    2017/09 - 2020/03

  • JAXA GCOM総合委員会 委員

    2016/09 - 2020/03

  • 日本地球惑星科学連合 代議員

    2016/04 - 2020/03

  • 九州大学応用力学研究所共同利用委員会 委員

    2009/04 - 2020/03

  • 気象庁気候問題懇談会検討部会 委員

    2012/01 - 2019/03

  • 日本地球惑星科学連合 Progress in Earth and Planetary Science 編集委員

    2014/04 - 2018/12

  • 日本気象学会・学術委員会 副委員長・地球観測衛星部会長

    2016/07 - 2018/06

  • (環境省・気象庁)地球温暖化観測・情報利活用推進委員会 委員

    2016/04 - 2018/03

  • 気象庁静止衛星データ利用技術懇談会 委員

    2014/04 - 2018/03

  • 日本気象学会「地球観測衛星研究連絡会」 幹事

    2003/05 - 2018/03

  • JAXA GCOM-W/AMSR2後継センサGOSAT-3搭載検討委員会 委員長

    2017/01 - 2017/04

  • 日本気象学会・学術委員会 委員・地球観測衛星部会長

    2013/07 - 2016/09

  • 放射観測機器の較正に関するワーキンググループ 主査

    2011/05 - 2016/03

  • JAXA地球圏総合診断委員会 委員

    2010/09 - 2015/03

  • GOSAT-RA評価委員会 委員

    2010/08 - 2014/03

  • 環境省地球環境研究総合推進費 S-7 戦略研究プロジェクト「東アジアにおける広域大気汚染の解明と温暖化対策との 共便益を考慮した大気環境管理の推進に関する総合的研究」アドバイザリーボード委員

    2009/04 - 2014/03

  • Asia-Pacific Journal of Atmospheric Sciences, Korean Meteorological Society Editor

    2011/07 - 2013/06

  • GOSATサイエンスチーム、アドバイザリーボード 委員

    2007/07 - 2013/03

  • IAMAS/International Radiation Commission 委員

    2001/10 - 2012/08

  • 環境省地球環境研究総合推進費 C-091「風送ダストの飛来量把握に基づく予報モデルの精緻化と健康・ 植物影響評価に関する研究」アドバイザリーボード委員

    2009/04 - 2012/03

  • 地球温暖化観測推進ワーキンググループ 雲・エアロゾル・放射サブワーキンググループ主査

    2008/10 - 2010/03

  • 地球環境研究総合推進費「アジアにおけるオゾン ・ブラックカーボンの空間的・時間的変動と気候影響に関する研究」、アドバイザリーボード 委員

    2005/04 - 2009/03

  • 人間文化研究機構連携研究委員会 副委員長

    2005/04 - 2008/03

  • GEWEX Radiation Panel 委員

    2001/10 - 2007/10

  • 文部科学省・新世紀重点研究創生プラン・人・自然・地球共生プロジェクト、課題2、3、6運営委員会 委員

    2002/04 - 2007/03

  • WMO/GAW Aerosol Scientific Advisory Group 委員

    1997/10 - 2001/09

  • 日本気象学会「天気」編集委員会 地区編集委員

    1997/07 - 2001/03

  • 日本気象学会「気象集誌」編集委員会 委員

    1996/07 - 2000/06

  • 文部省学術調査官 学術調査官

    1995/04 - 2000/03

Show all ︎Show first 5

Professional Memberships 1

  • 日本気象学会

Research Interests 30

  • 放射強制力

  • 大気-陸面相互作用

  • 大気汚染

  • 大気放射

  • 水循環

  • 鉛直ドップラーレーダー

  • ポーラーロー

  • 日射量

  • 統計値

  • 雲微物理量

  • 低層雲

  • 雲物理特性

  • 微物理特性

  • 放射収支

  • 放射

  • 気象モデル

  • 気候モデル

  • パラメタリゼーション

  • 日変化

  • 長期解析

  • 放射特性

  • 衛星リモートセンシング

  • エアロゾル間接効果

  • 間接効果

  • 衛星観測

  • 東アジア

  • リモ-トセンシング

  • 気候変動

  • エアロゾル

Research Areas 1

  • Natural sciences / Atmospheric and hydrospheric science /

Papers 160

  1. Spring and Summer Sea Ice Controls Interannual Variation in Top-of-Atmosphere Upward Shortwave Flux over the Antarctic

    Michinari Amma, Tadahiro Hayasaka

    Journal of Climate 38 (18) 4723-4737 2025/09/15

    Publisher: American Meteorological Society

    DOI: 10.1175/jcli-d-24-0206.1  

    ISSN: 0894-8755

    eISSN: 1520-0442

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    Abstract Recent sea ice changes in the Antarctic affect the radiation budget at the top of the atmosphere (TOA), especially the TOA upward shortwave radiation (TOA SW ). The effect of sea ice changes on TOA SW is also affected by clouds. However, there is no quantitative evaluation of the effect of sea ice and clouds on the interannual variation in TOA SW over the whole Antarctic. Focusing on a monthly scale, we investigated the interannual variation in TOA SW over the Antarctic using the Clouds and the Earth’s Radiant Energy System (CERES) observation from July 2000 to June 2023. The annual mean TOA SW over the Antarctic showed a decreasing trend (−0.7 W m −2 decade −1 ) with relatively large interannual variability. Sea ice cover from November to January mainly explained TOA SW variability, but clouds over ocean from November to January partially attenuated the effect of sea ice cover. Unlike over ocean, TOA SW variability over the Antarctic was less related to TOA SW variability over land. The annual mean TOA SW over land showed relatively small interannual variations. These interannual variations were mainly related to cloud fraction from October to December, which was associated with the Antarctic Oscillation. Our results suggest that the amount of sea ice melt and the cloud effect in spring and summer are essential factors for the interannual variation in TOA SW over the Antarctic.

  2. Unveiling the effects of post-monsoon agricultural biomass burning on aerosols, clouds, and radiation in Northwest India

    Pradeep Khatri, Tadahiro Hayasaka, Prabir K. Patra, Husi Letu, Hiren Jethva, Sachiko Hayashida

    Progress in Earth and Planetary Science 12 (1) 2025/02/05

    Publisher: Springer Science and Business Media LLC

    DOI: 10.1186/s40645-025-00685-8  

    eISSN: 2197-4284

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    Abstract The post-monsoon agricultural biomass burning activities in Northwest India have been recognized as a significant socio-environmental problem in recent years, primarily due to their severe impacts on air quality degradation across a wide area, including the capital New Delhi. Although these biomass burning activities have been extensively studied from an air quality perspective, their potential impacts on the climate system, particularly through their influences on cloud and radiation fields, have been largely overlooked. In this study, we aim to address this research gap by analyzing fire, meteorological parameters, aerosol, cloud, and radiation data spanning nearly two decades (2002–2021), obtained from the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Aqua satellite, Modern-Era Retrospective Analysis Research and Applications, Version 2 (MERRA-2), and the Fifth Generation of European Centre for Medium-Range Weather Forecasts (ECMWF) Reanalysis (ERA5). Our analysis reveals a notable increase in agricultural biomass burning intensity in Northwest India over the past two decades, contributing significantly to air quality degradation. Our analysis further indicates a delay in peak burning time (day of the year) and a shortening of the period of intense burning, reflecting changes in farming practices and agricultural biomass burning in Northwest India over the past two decades. These agricultural biomass burning activities substantially elevate total and light-absorbing aerosols, thereby affecting cloud properties and altering the radiation budget. The intensification of these burning activities can cause an increase in cloud droplet size and a decrease in cloud optical thickness, suggesting an enhancement of the cloud droplet collision-coalescence process during the period of intense burning. Similarly, the intensification of burning activities leads to increased cooling effects at the surface and top-of-the-atmosphere across shortwave and longwave spectral ranges, while inducing a heating effect within the atmosphere. These findings highlight the potential impacts of agricultural biomass burning activities on the regional climate system and hydrological cycle, emphasizing the need for more detailed studies in the future.

  3. Increasing marine heatwaves in the Gulf of Thailand after the global warming hiatus Peer-reviewed

    Parichat Wetchayont, Anindya Wirasatriya, Tadahiro Hayasaka, Teruhisa Shimada, Muhammad Rais Abdillah, Ardiansyah Desmont Puryajati

    Marine Environmental Research 106570-106570 2024/05

    Publisher: Elsevier BV

    DOI: 10.1016/j.marenvres.2024.106570  

    ISSN: 0141-1136

  4. Author Correction: Increased aerosols can reverse Twomey effect in water clouds through radiative pathway (Scientific Reports, (2022), 12, 1, (20666), 10.1038/s41598-022-25241-y)

    Pradeep Khatri, Tadahiro Hayasaka, Brent N. Holben, Ramesh P. Singh, Husi Letu, Sachchida N. Tripathi

    Scientific Reports 13 (1) 2023/12

    DOI: 10.1038/s41598-023-28028-x  

    eISSN: 2045-2322

  5. Aerosol Effects on Water Cloud Properties in Different Atmospheric Regimes Peer-reviewed

    P. Khatri, K. Yoshida, T. Hayasaka

    JGR: Atmospheres 2023/12

    DOI: 10.1029/2023JD039729  

    ISSN: 2169-897X 2169-8996

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    <jats:title>Abstract</jats:title><jats:p>Aerosol‐cloud interaction remains one of the least understood processes in climate science arena, despite its profound impacts in radiation and water budget perturbations. The aerosol effects on clouds largely depend on aerosol characteristics. Here, we implemented 17‐year (2003–2020) data set of aerosol, cloud, and meteorological factors collected over East Asia—a highly polluted region with recent decreasing trend of air pollution due to control measures—to elucidate atmospheric regime‐dependent aerosol effects on water cloud properties by simultaneously accessing the response of air pollution control measures in cloud field. The study found a very close relationship between aerosol loading and cloud properties modifications in the continental region of East Asia with a significant response of air pollution control measures in the cloud field. The study further revealed that aerosols of the polluted continental atmosphere affected cloud micro‐ and macro‐physics differently than aerosols of the clean maritime atmosphere: in the former, increased aerosol loading increased the stability under cloud base and then enhanced cloud droplet collision‐coalescence process, resulting to increase cloud droplet size by decreasing cloud top height; whereas in the latter, increased aerosol loading decreased cloud droplet size without notable influence in the atmosphere thermodynamics and cloud top height. This study further showed a complex aerosol‐cloud interaction process in the polluted maritime atmosphere due to the mixed effect of polluted continental and clean maritime atmospheres. In all atmospheric regimes, cloud fraction was found to increase with the increase of aerosol loading.</jats:p>

  6. Aerosol Optical Properties of Extreme Global Wildfires and Estimated Radiative Forcing With GCOM‐C SGLI Peer-reviewed

    Kazuhisa Tanada, Hiroshi Murakami, Tadahiro Hayasaka, Mayumi Yoshida

    Journal of Geophysical Research: Atmospheres 128 (17) 2023/09/16

    Publisher: American Geophysical Union (AGU)

    DOI: 10.1029/2022jd037914  

    ISSN: 2169-897X

    eISSN: 2169-8996

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    Abstract To understand the climate impact of the wildfires, it is essential to monitor the aerosol emissions from biomass burning and to estimate their optical properties and radiative forcing. This study analyzed wildfires in Brazil, Angola, Australia, California, Siberia, and South‐east Asia that occurred after 2018 using data obtained with the Second‐generation GLobal Imager (SGLI) onboard Global Change Observation Mission—Climate which is a polar‐orbit satellite launched by JAXA on 23 December 2017. We showed the SGLI‐based 4‐year variation of the aerosol optical properties, Aerosol Optical Thickness, Ångström Exponent (AE), and Single Scattering Albedo (SSA) for each region complemented with other satellite‐ and ground‐based data. From the SSA and AE relationship analyses, we confirmed that their optical properties depend on the relative humidity and type of burned vegetation, which is consistent with the previous studies. Moreover, we estimated the net incoming radiation at the top of the atmosphere during the intense fire periods to understand the impact of the direct effect of biomass burning aerosols on radiative forcing. The estimates show a significant negative radiative forcing (i.e., a cooling effect) over the ocean (−78 and −96 Wm−2 in Australia and California, respectively). In contrast, small values are observed over land (∼−10 Wm−2 for all six regions). Therefore, taking the regional characteristics of the optical properties and surface reflectance into account is necessary to estimate the effect on radiative forcing and future impacts of a short‐lived climate forcer from wildfires.

  7. Interannual Variation in Top-of-Atmosphere Upward Shortwave Flux over the Arctic Related to Sea Ice, Snow Cover, and Land Cloud Cover in Spring and Summer Peer-reviewed

    Michinari Amma, Tadahiro Hayasaka

    Journal of Climate 36 5163-5178 2023/08/01

    Publisher: American Meteorological Society

    DOI: 10.1175/jcli-d-22-0440.1  

    ISSN: 0894-8755

    eISSN: 1520-0442

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    Abstract We investigated the interannual variations in the annual mean and seasonal cycle of upward shortwave radiation at the top of atmosphere (TOA SW) over the Arctic using the Clouds and the Earth’s Radiant Energy System (CERES) observation data during 2001–2020. The annual mean TOA SW over the Arctic showed a decreasing trend from 2001 to 2012 (−2.5 W m−2 decade−1) and had a large interannual variability after 2012. The standard deviation of detrended TOA SW increased from 0.4 W m−2 in 2001–2012 to 1.1 W m−2 in 2012–2020. Over land, TOA SW variation was related to snow cover in May, snow cover, cloud fraction, and cloud optical depth (COD) in June, and cloud fraction and COD in July. Over ocean, TOA SW variation in June and July was linked to sea ice cover. TOA SW variation over ocean in June and July after 2012 was highly related to the North Atlantic Oscillation (NAO). This study suggests that changes in the large annual mean TOA SW variability after 2012 is explained by the timing of land snow and sea ice melt in spring and summer, and cloud variability over land in summer.

  8. Comparison of Cloud Properties between SGLI Aboard GCOM-C Satellite and MODIS Aboard Terra Satellite Peer-reviewed

    Pradeep Khatri, Tadahiro Hayasaka

    Remote Sensing 15 (4) 1075-1075 2023/02/16

    Publisher: MDPI AG

    DOI: 10.3390/rs15041075  

    eISSN: 2072-4292

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    This study presents a comprehensive comparison of Level 2.0 cloud properties between a Second-generation Global Imager (SGLI) aboard the GCOM-C satellite and a Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Terra satellite, to better understand the qualities of cloud properties obtained from SGLI/GCOM-C launched on 23 December 2017. The cloud pixels identified as water phase by both satellite sensors are highly consistent to each other by more than 90%, although the consistency is only ~60% for ice phase cloud pixels. A comparison of cloud properties—cloud optical thickness (COT) and cloud particle effective radius (CER)—between these two satellite sensors reveals that water and ice cloud properties can have different degrees of agreement depending on underlying surface. The relative difference (RD) values of 22% (18%) and 37% (24%) for water cloud COT (CER) comparison over ocean and land surfaces and respective values of 35% (42%) and 35% (62%) for comparisons of ice cloud properties, and also other comparison metrics, suggest better agreements for water cloud properties than for ice cloud properties, and for ocean surface than for land surface. Though cloud properties differences between MODIS and SGLI can arise from inherent features of cloud retrieval algorithms, such as differences in ancillary data, surface reflectance, cloud droplet size distribution function, model for ice particle habit, etc., this study further identifies the important roles of cloud thickness and Sun and satellite positions for differences in cloud properties between SGLI and MODIS: the differences in cloud properties are found to increase for thinner clouds, higher solar zenith angle, and higher differences in viewing zenith and azimuth angles between these satellite sensors, and such differences are more distinct for water cloud properties than for ice cloud properties.

  9. Increased aerosols can reverse Twomey effect in water clouds through radiative pathway International-journal Peer-reviewed

    Pradeep Khatri, Tadahiro Hayasaka, Brent N. Holben, Ramesh P. Singh, Husi Letu, Sachchida N. Tripathi

    Scientific Reports 12 (1) 2022/11/30

    Publisher: Springer Science and Business Media LLC

    DOI: 10.1038/s41598-022-25241-y  

    ISSN: 2045-2322

    eISSN: 2045-2322

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    Abstract Aerosols play important roles in modulations of cloud properties and hydrological cycle by decreasing the size of cloud droplets with the increase of aerosols under the condition of fixed liquid water path, which is known as the first aerosol indirect effect or Twomey-effect or microphysical effect. Using high-quality aerosol data from surface observations and statistically decoupling the influence of meteorological factors, we show that highly loaded aerosols can counter this microphysical effect through the radiative effect to result both the decrease and increase of cloud droplet size depending on liquid water path in water clouds. The radiative effect due to increased aerosols reduces the moisture content, but increases the atmospheric stability at higher altitudes, generating conditions favorable for cloud top entrainment and cloud droplet coalescence. Such radiatively driven cloud droplet coalescence process is relatively stronger in thicker clouds to counter relatively weaker microphysical effect, resulting the increase of cloud droplet size with the increase of aerosol loading; and vice-versa in thinner clouds. Overall, the study suggests the prevalence of both negative and positive relationships between cloud droplet size and aerosol loading in highly polluted regions.

  10. Quality assessment of Second-generation Global Imager (SGLI)-observed cloud properties using SKYNET surface observation data Peer-reviewed

    Pradeep Khatri, Tadahiro Hayasaka, Hitoshi Irie, Husi Letu, Takashi Y. Nakajima, Hiroshi Ishimoto, Tamio Takamura

    Atmospheric Measurement Techniques 15 (6) 1967-1982 2022/03/31

    DOI: 10.5194/amt-15-1967-2022  

    ISSN: 1867-1381

    eISSN: 1867-8548

  11. Interannual Variability of the Indonesian Rainfall and Air–Sea Interaction over the Indo–Pacific Associated with Interdecadal Pacific Oscillation Phases in the Dry Season Peer-reviewed

    Murni Ngestu NUR'UTAMI, Tadahiro HAYASAKA

    Journal of the Meteorological Society of Japan. Ser. II 100 (1) 77-97 2022/02

    Publisher: Meteorological Society of Japan

    DOI: 10.2151/jmsj.2022-004  

    ISSN: 0026-1165

    eISSN: 2186-9057

  12. Aerosol Loading and Radiation Budget Perturbations in Densely Populated and Highly Polluted Indo‐Gangetic Plain by COVID‐19: Influences on Cloud Properties and Air Temperature Peer-reviewed

    P. Khatri, T. Hayasaka, B. Holben, S. N. Tripathi, P. Misra, P. K. Patra, S. Hayashida, U. C. Dumka

    Geophysical Research Letters 48 (20) 2021/10/28

    Publisher: American Geophysical Union (AGU)

    DOI: 10.1029/2021gl093796  

    ISSN: 0094-8276

    eISSN: 1944-8007

  13. Impacts of COVID-19 on Air Quality over China: Links with Meteorological Factors and Energy Consumption Peer-reviewed

    Pradeep Khatri, Tadahiro Hayasaka

    Aerosol and Air Quality Research 21 (10) 200668-200668 2021/10

    Publisher: Taiwan Association for Aerosol Research

    DOI: 10.4209/aaqr.200668  

    ISSN: 1680-8584

    eISSN: 2071-1409

  14. Air Quality Improvement during COVID-19 Lockdown in Bangkok Metropolitan, Thailand: Effect of the Long-range Transport of Air Pollutants Peer-reviewed

    Parichat Wetchayont, Tadahiro Hayasaka, Pradeep Khatri

    Aerosol and Air Quality Research 21 200662-200662 2021/07

    Publisher: Taiwan Association for Aerosol Research

    DOI: 10.4209/aaqr.200662  

    ISSN: 2071-1409

    eISSN: 2071-1409

  15. Observed response of marine boundary layer cloud to the interannual variations of summertime Oyashio extension SST front Peer-reviewed

    Naoya Takahashi, Tadahiro Hayasaka, Bo Qiu, Ryohei Yamaguchi

    Climate Dynamics 56 (11-12) 3511-3526 2021/01/30

    Publisher: Springer Science and Business Media LLC

    DOI: 10.1007/s00382-021-05649-4  

    ISSN: 0930-7575

    eISSN: 1432-0894

  16. Air–Sea Interactions among Oceanic Low-Level Cloud, Sea Surface Temperature, and Atmospheric Circulation on an Intraseasonal Time Scale in the Summertime North Pacific Based on Satellite Data Analysis Peer-reviewed

    Naoya Takahashi, Tadahiro Hayasaka

    Journal of Climate 33 (21) 9195-9212 2020/11/01

    Publisher: American Meteorological Society

    DOI: 10.1175/jcli-d-19-0670.1  

    ISSN: 0894-8755

    eISSN: 1520-0442

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    <title>Abstract</title>Low-level cloud plays a key role in modulating air–sea interaction processes and sea surface temperature (SST) variability. The present study investigated the evolution process of oceanic low-level cloud cover (LCC) and related air–sea interaction processes on an intraseasonal time scale in the summertime (June–October) North Pacific (30°–40°N, 165°–175°E) based on satellite observational and reanalysis datasets from 2003 to 2016. The intraseasonal time scale (20–100 days) is dominant not only for the LCC, but also for LCC controlling factors, that is, SST, estimated inversion strength (EIS), and horizontal temperature advection (<italic>T</italic>adv). To reveal the lead–lag relationship among these variables, we conducted phase composite analysis with a bandpass filter based on the intraseasonal variability (ISV) of LCC. It suggests that ISV of LCC leads to that of SST and that horizontal dry–cold advection from the poleward region leads to increasing LCC and decreasing SST. The increasing LCC corresponds to a positive relative humidity (RH) anomaly in the lower troposphere, which is due to adiabatic cooling with shallow convection, vertical moisture advection, and meridional RH advection associated with the anomalous cold <italic>T</italic>adv. Heat budget analysis of the ocean mixed layer suggests the importance of anomalous dry–cold advection for cooling SST, not only via enhanced latent heat release but also via decreased downward shortwave radiation at the sea surface according to cloud radiative effect with a positive LCC anomaly. Determining the detailed lead–lag relationship between LCC and its controlling factor is a good approach to understand mechanisms of the local processes of both low-level cloud evolution and air–sea interaction.

  17. Impact of the Oyashio Extension SST Front on Synoptic Variability of Oceanic Low‐Level Cloud in Summertime Based on WRF Numerical Simulation Peer-reviewed

    Naoya Takahashi, Tadahiro Hayasaka, Atsuyoshi Manda, Niklas Schneider

    Journal of Geophysical Research: Atmospheres 125 (17) 2020/09/16

    Publisher: American Geophysical Union (AGU)

    DOI: 10.1029/2020jd032518  

    ISSN: 2169-897X

    eISSN: 2169-8996

  18. Cloud Characteristics and Radiation Forcing in the Global Land Monsoon Region From Multisource Satellite Data Sets Peer-reviewed

    Baichao Zhang, Zhun Guo, Lixia Zhang, Tianjun Zhou, Tadahiro Hayasaka

    Earth and Space Science 7 (3) 2020/03

    Publisher: American Geophysical Union (AGU)

    DOI: 10.1029/2019ea001027  

    ISSN: 2333-5084

    eISSN: 2333-5084

  19. Retrieval of cloud properties from spectral zenith radiances observed by sky radiometers Peer-reviewed

    Pradeep Khatri, Hironobu Iwabuchi, Tadahiro Hayasaka, Hitoshi Irie, Tamio Takamura, Akihiro Yamazaki, Alessandro Damiani, Husi Letu, Qin Kai

    Atmospheric Measurement Techniques 12 (11) 6037-6047 2019/11/21

    DOI: 10.5194/amt-12-6037-2019  

    ISSN: 1867-1381

    eISSN: 1867-8548

  20. Evolution of Mesoscale Convective System Properties as Derived from Himawari-8 High Resolution Data Analyses Peer-reviewed

    Putri, N. S, H. Iwabuchi, T. Hayasaka

    J. Meteor. Soc. Japan 96B 239-250 2018/08

    DOI: 10.2151/jmsj.2018-020  

  21. Validation of MODIS and AHI observed water cloud properties using surface radiation data Peer-reviewed

    Khatri, P, T. Hayasaka, H. Iwabuchi, T. Takamura, H. Irie, T. Y. Nakajima

    J. Meteor. Soc. Japan 96B 151-172 2018/08

    DOI: 10.2151/jmsj.2018-036  

    ISSN: 0026-1165

  22. Shortwave radiation, climate change, and anthropogenic aerosols in China Invited

    HAYASAKA Tadahiro

    Land-Atmospheric Research Applications in South and Southeast Asia 409-424 2018/04

  23. Preface

    Hayasaka, T.

    Journal of the Meteorological Society of Japan 96B 1-1 2018

    DOI: 10.2151/jmsj.2018-B00a  

  24. Development of Algorithm for Discriminating Hydrometeor Particle Types With a Synergistic Use of CloudSat and CALIPSO Peer-reviewed

    M. Kikuchi, H. Okamoto, K. Sato, K. Suzuki, G. Cesana, Y. Hagihara, N. Takahashi, T. Hayasaka, R. Oki

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122 (20) 11022-11044 2017/10

    DOI: 10.1002/2017JD027113  

    ISSN: 2169-897X

    eISSN: 2169-8996

  25. The Properties of Mesoscale Convective Systems in Indonesia Detected Using the Grab 'Em Tag 'Em Graph 'E (GTG) Algorithm Peer-reviewed

    Nurfiena Sagita Putri, Tadahiro Hayasaka, Kim Dionne Whitehall

    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN 95 (6) 391-409 2017

    DOI: 10.2151/jmsj.2017-026  

    ISSN: 0026-1165

    eISSN: 2186-9057

  26. Ice Cloud Microphysical Properties in Tropical Pacific Regions derived from CloudSat and CALIPSO Measurements. Peer-reviewed

    Naoya Takahashi, Tadahiro Hayasaka, Hajime Okamoto

    RADIATION PROCESSES IN THE ATMOSPHERE AND OCEAN 1810 070008 2017

    DOI: 10.1063/1.4975529  

    ISSN: 0094-243X

  27. Evaluation of the accuracy of downward radiative flux observations at the sea surface Peer-reviewed

    Kyohei Yamada, Tadahiro Hayasaka

    JOURNAL OF OCEANOGRAPHY 72 (4) 553-565 2016/08

    DOI: 10.1007/s10872-015-0345-x  

    ISSN: 0916-8370

    eISSN: 1573-868X

  28. Dependence of Backscattering Coefficients of Atmospheric Particles on their Concentration and Constitution under Dry and Humid Conditions at Southwestern Japanese Coast in Spring Peer-reviewed

    Satoshi Fukushima, Daizhou Zhang, Takashi Shibata, Shuichiro Katagiri, Tadahiro Hayasaka

    AEROSOL AND AIR QUALITY RESEARCH 16 (5) 1294-1301 2016/05

    DOI: 10.4209/aaqr.2015.10.0584  

    ISSN: 1680-8584

    eISSN: 2071-1409

  29. The Long-term Variation in Surface Shortwave Irradiance in China and Japan: A Review Invited Peer-reviewed

    Tadahiro Hayasaka

    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN 94 (5) 393-414 2016

    DOI: 10.2151/jmsj.2016-024  

    ISSN: 0026-1165

    eISSN: 2186-9057

  30. Differences in Ice Cloud Microphysical Properties between Western and Eastern Tropical Pacific Regions Derived from CloudSat and CALIPSO Measurements Peer-reviewed

    Naoya Takahashi, Tadahiro Hayasaka, Hajime Okamoto

    SOLA 12 91-95 2016

    DOI: 10.2151/sola.2016-021  

    ISSN: 1349-6476

  31. Short-cut transport path for Asian dust directly to the Arctic: a case study Peer-reviewed

    Zhongwei Huang, Jianping Huang, Tadahiro Hayasaka, Shanshan Wang, Tian Zhou, Hongchun Jin

    ENVIRONMENTAL RESEARCH LETTERS 10 (11) 2015/11

    DOI: 10.1088/1748-9326/10/11/114018  

    ISSN: 1748-9326

  32. 日本地球惑星科学連合2015年大会「最新の大気科学: 衛星による地球環境観測」セッションの報告(研究会報告)

    OKI,Riko, HAYASAKA,Tadahiro, SATO,Kaoru, SATOH,Masaki, TAKAHASHI,Nobuhiro, HONDA,Yoshiaki, NASAHARA,Nishida Kenlo, NAKAJIMA,T. Takashi, OKI,Taikan, YOKOTA,Tatsuya, TAKAYABU, N. Yukari, MURAKAMI,Hiroshi, OKAMOTO,Hajime, OKAMOTO,Kozo

    Tenki 62 (8) 723-724 2015/08

    Publisher: Meteorological Society of Japan

    ISSN: 0546-0921

  33. An algorithm for whole sky-camera with low color depth and relationships between cloud fractions derived from the sky-camera and MODIS observations. Peer-reviewed

    Katagiri, S, T. Hayasaka, K. Yamada

    J. Rem. Sens. Soc. Japan 35 (2) 89-103 2015/07

    Publisher: The Remote Sensing Society of Japan

    DOI: 10.11440/rssj.35.89  

    ISSN: 0289-7911

    More details Close

    Whole-sky images taken during April 2012 at Sendai, Japan by a sky camera with a fish-eye lens were used to validate cloud fractions derived from data obtained by the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard the Terra satellite. We developed an algorithm to estimate the cloud fractions from the sky camera JPEG data with 8-bit low color depth, and applied this algorithm to have the cloudiness as seen from the ground. The existence of cirrus, thin clouds, and broken clouds yielded large ambiguities in a comparison between these cloud fractions. How wide a view of the whole-sky image taken at an observatory is suitable for the validation of the MODIS cloud fractions was also examined, and the results indicate that cloud homogeneities strongly affect the size of the area in which the cloud fractions given as an indicator at the site. The cloud fractions from the MODIS with average radii of 0.04° (about 3km), 0.08° (≈6km), 0.2° (≈15km), 0.3° (≈20km), and 0.4° (≈30km) around the site were compared with the image-based cloud fractions at the site. Consequently, the cloud fractions observed at the site had values that were generally closer to the average of the MODIS cloud fractions with a radius of 0.08° (about 6km). Throughout this study, we assumed that the subsidiary whole-sky pictures taken at adjacent sites encircling the main observatory at a radius of about 5 ~ 7km would be very helpful for more accurately validating the cloud fractions derived from satellite observations.

  34. Comparison of Global and Seasonal Characteristics of Cloud Phase and Horizontal Ice Plates Derived from CALIPSO with MODIS and ECMWF Peer-reviewed

    Maki Hirakata, Hajime Okamoto, Yuichiro Hagihara, Tadahiro Hayasaka, Riko Oki

    JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY 31 (10) 2114-2130 2014/10

    DOI: 10.1175/JTECH-D-13-00245.1  

    ISSN: 0739-0572

    eISSN: 1520-0426

  35. 第40回メソ気象研究会報告 静かなるメソ気象―ヤマセ・霧・層雲―

    吉岡真由美, 藤吉康志, 児玉安正, 小池真, 藤部文昭, 早坂忠裕

    天気 61 (6) 515-520 2014/06/30

    Publisher: 日本気象学会

    ISSN: 0546-0921

  36. 新たな学際的視点としての大気海洋相互作用 −海洋からの影響/海洋への影響ー Peer-reviewed

    谷本陽一, 早坂忠裕, 万田敦昌, 杉本周作

    天気 61 (1) 31-33 2014/01

    ISSN: 0546-0921

  37. Effects of Dust Aerosols on Warm Cloud Properties over East Asia and the Sahara from Satellite Data Peer-reviewed

    Tetsuhiko Saito, Tadahiro Hayasaka

    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN 92A 109-123 2014

    DOI: 10.2151/jmsj.2014-A07  

    ISSN: 0026-1165

    eISSN: 2186-9057

  38. Variation in Radiative Contribution by Clouds to Downward Longwave Flux Peer-reviewed

    Kyohei Yamada, Tadahiro Hayasaka, Hironobu Iwabuchi

    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN 92A 125-140 2014

    DOI: 10.2151/jmsj.2014-A08  

    ISSN: 0026-1165

    eISSN: 2186-9057

  39. Maritime-Continental Contrasts in the Properties of Low-Level Clouds: A Case Study of the Summer of the 2003 Yamase, Japan, Cloud Event Peer-reviewed

    Nawo Eguchi, Tadahiro Hayasaka, Masahiro Sawada

    ADVANCES IN METEOROLOGY 2014 2014

    DOI: 10.1155/2014/548091  

    ISSN: 1687-9309

    eISSN: 1687-9317

  40. Characteristics of Aerosol Properties of Haze and Yellow Sand Examined from SKYNET Measurements over East China Sea Peer-reviewed

    Shiho Kitakoga, Yoko Inoue, Makoto Kuji, Tadahiro Hayasaka

    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN 92A 57-69 2014

    DOI: 10.2151/jmsj.2014-A04  

    ISSN: 0026-1165

    eISSN: 2186-9057

  41. Effects of Clouds on Surface Shortwave Irradiance in China: Estimation by Surface Radiation Measurements and Satellite Data Peer-reviewed

    Tadahiro Hayasaka, Guangyu Shi

    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN 92A 141-156 2014

    DOI: 10.2151/jmsj.2014-A09  

    ISSN: 0026-1165

    eISSN: 2186-9057

  42. Cirrus cloud radiative forcing caused by the 1987 El Niño using the nighttime global distribution of microphysical parameters derived from AVHRR Peer-reviewed

    Katagiri, S, M. Sekiguchi, T. Nakajima, T. Hayasaka

    UmiToSora 88 (3) 71-83 2013/04

  43. Cirrus Cloud Radiative Forcing at the Top of Atmosphere using the Nighttime Global Distribution with the Microphysical Parameters Derived from AVHRR Peer-reviewed

    Shuichiro Katagiri, Miho Sekiguchi, Tadahiro Hayasaka, Teruyuki Nakajima

    RADIATION PROCESSES IN THE ATMOSPHERE AND OCEAN (IRS2012) 1531 704-707 2013

    DOI: 10.1063/1.4804867  

    ISSN: 0094-243X

  44. Physical Explanation of Tropospheric Aerosol Effects on Twilight Sky Color Based on Photographic Observations and Radiative Transfer Simulations Peer-reviewed

    Masanori Saito, Hironobu Iwabuchi, Tadahiro Hayasaka

    SOLA 9 15-18 2013

    DOI: 10.2151/sola.2013-004  

    ISSN: 1349-6476

  45. Retrieval of Rainfall by Combining Rain Gauge, Ground-Based Radar and Satellite Measurements over Phimai, Thailand Peer-reviewed

    Parichat Wetchayont, Tadahiro Hayasaka, Takehiko Satomura, Shuichiro Katagiri, Somchai Baimoung

    SOLA 9 166-169 2013

    DOI: 10.2151/sola.2013-037  

    ISSN: 1349-6476

  46. Application of a Precipitating Cloud Classification Method to Radar Observations in Thailand Peer-reviewed

    Parichat Wetchayont, Tadahiro Hayasaka, Shuichiro Katagiri

    RADIATION PROCESSES IN THE ATMOSPHERE AND OCEAN (IRS2012) 1531 388-391 2013

    DOI: 10.1063/1.4804788  

    ISSN: 0094-243X

  47. Long term analysis of cirrus clouds' effects on shortwave and longwave radiation derived from data acquired by ground-based and satellite-borne observations Peer-reviewed

    Shuichiro Katagiri, Tadahiro Hayasaka, Atsushi Shimizu, Ichiro Matsui, Tomoaki Nishizawa, Nobuo Sugimoto, Tamio Takamura

    AIP Conference Proceedings 1531 492-495 2013

    DOI: 10.1063/1.4804814  

    ISSN: 0094-243X 1551-7616

  48. Impacts of major factors on downward longwave radiation Peer-reviewed

    Kyohei Yamada, Tadahiro Hayasaka, Hironobu Iwabuchi

    AIP Conference Proceedings 1531 608-611 2013

    DOI: 10.1063/1.4804843  

    ISSN: 0094-243X 1551-7616

  49. The Importance of Asian Dust Aerosols as CCN Estimated from Satellite Data Analysis Peer-reviewed

    Tadahiro Hayasaka, Tetsuhiko Saito, Hironobu Iwabuchi

    RADIATION PROCESSES IN THE ATMOSPHERE AND OCEAN (IRS2012) 1531 440-443 2013

    DOI: 10.1063/1.4804801  

    ISSN: 0094-243X

  50. Aerosol Climatology over Japan Site Measured by Ground-based Sky Radiometer Peer-reviewed

    Kazuma Aoki, Toshihiko Takemura, Kazuaki Kawamoto, Tadahiro Hayasaka

    RADIATION PROCESSES IN THE ATMOSPHERE AND OCEAN (IRS2012) 1531 284-287 2013

    DOI: 10.1063/1.4804762  

    ISSN: 0094-243X

  51. Observed radiative effects caused by yellow dust aerosol at Sendai Peer-reviewed

    Shuichiro Katagiri, Kyohei Yamada, Atsushi Shimizu, Tadahiro Hayasaka, Nobuo Sugimoto, Tamio Takamura

    REMOTE SENSING OF THE ATMOSPHERE, CLOUDS, AND PRECIPITATION IV 8523 85230X-1-85230X-6 2012

    DOI: 10.1117/12.977300  

    ISSN: 0277-786X

  52. Microphysical properties of low clouds over the North Pacific Ocean Peer-reviewed

    Takumi Maruyama, Tadahiro Hayasaka

    REMOTE SENSING OF THE ATMOSPHERE, CLOUDS, AND PRECIPITATION IV 8523 85231O-1-85231O-6 2012

    DOI: 10.1117/12.977295  

    ISSN: 0277-786X

  53. Contributing Factors to Downward Longwave Radiation at the Earth's Surface Peer-reviewed

    Kyohei Yamada, Tadahiro Hayasaka, Hironobu Iwabuchi

    SOLA 8 94-97 2012

    DOI: 10.2151/sola.2012-024  

    ISSN: 1349-6476

  54. Relationship between cloud base height retrieved from lidar and downward longwave irradiance Peer-reviewed

    Kyohei Yamada, Tadahiro Hayasaka, Nobuo Sugimoto

    REMOTE SENSING OF THE ATMOSPHERE, CLOUDS, AND PRECIPITATION IV 8523 85231Q-1-85231Q-6 2012

    DOI: 10.1117/12.977270  

    ISSN: 0277-786X

  55. Categorizing precipitating clouds by using Radar and Geostationary satellite Peer-reviewed

    P. Wetchayont, T. Hayasaka, S. Katagiri, T. Satomura

    REMOTE SENSING OF THE ATMOSPHERE, CLOUDS, AND PRECIPITATION IV 8523 85231C-1-85231C-7 2012

    DOI: 10.1117/12.976833  

    ISSN: 0277-786X

  56. Estimation and Verification of Daily Surface Shortwave Flux over China Peer-reviewed

    Jianqing Xu, Kooiti Masuda, Yasushi Ishigooka, Tsuneo Kuwagata, Shigenori Haginoya, Tadahiro Hayasaka, Tetsuzo Yasunari

    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN 89A 225-238 2011/02

    DOI: 10.2151/jmsj.2011-A14  

    ISSN: 0026-1165

    eISSN: 2186-9057

  57. Cloud and aerosol contributions to variation in shortwave surface irradiance over East Asia in July during 2001 and 2007 Peer-reviewed

    Kazuaki Kawamoto, Tadahiro Hayasaka

    JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 112 (2) 329-337 2011/01

    DOI: 10.1016/j.jqsrt.2010.08.002  

    ISSN: 0022-4073

  58. Global and seasonal characteristics of the cloud phase and ice orientation observed by CALIPSO Peer-reviewed

    Hirakata, M, H. Okamoto, Y. Hagihara, R. Yoshida, T. Hayasaka

    Proc. 25th International Laser Radar Conference, 5-9 July 2010, St. Petersburg, Russia 1324-1327 2010/07

  59. Comparison of depolarization ratio measurements with micro-pulse lidar and a linear polarization lidar in Lanzhou, China Peer-reviewed

    Huang, Z, N. Sugimoto, J. Huang, T. Hayasaka, T. Nishizawa, J. Bi, I. Matsui

    Proc. 25th International Laser Radar Conference, 5-9 July 2010, St. Petersburg, Russia 528-531 2010/07

  60. Geographical features of changes in surface shortwave irradiance in East Asia estimated using the potential radiative forcing index Peer-reviewed

    K. Kawamoto, T. Hayasaka

    ATMOSPHERIC RESEARCH 96 (2-3) 337-343 2010/05

    DOI: 10.1016/j.atmosres.2009.09.016  

    ISSN: 0169-8095

    eISSN: 1873-2895

  61. Cirrus Cloud Radiative Forcing Derived from Synergetic Use of MODIS Analyses and Ground-Based Observations Peer-reviewed

    Shuichiro Katagiri, Nobuyuki Kikuchi, Takashi Y. Nakajima, Akiko Higurashi, Atsushi Shimizu, Ichiro Matsui, Tadahiro Hayasaka, Nobuo Sugimoto, Tamio Takamura, Teruyuki Nakajima

    SOLA 6 25-28 2010

    DOI: 10.2151/sola.2010-007  

    ISSN: 1349-6476

  62. Shortwave Absorption Properties of Atmosphere over China Invited Peer-reviewed

    Tadahiro Hayasaka, Kazuaki Kawamoto, Guang-Yu Shi

    CURRENT PROBLEMS IN ATMOSPHERIC RADIATION (IRS 2008) 1100 533-+ 2009

    DOI: 10.1063/1.3117039  

    ISSN: 0094-243X

  63. Introducing Potential Radiative Forcing (PRF) for quantifying the Earth radiation budget Peer-reviewed

    Kazuaki Kawamoto, Tadahiro Hayasaka

    CURRENT PROBLEMS IN ATMOSPHERIC RADIATION (IRS 2008) 1100 541-+ 2009

    DOI: 10.1063/1.3117042  

    ISSN: 0094-243X

  64. Characterization of Atmospheric Aerosols at the Observatory for Atmospheric research at Phimai, Thiland, a Station of SKYNET

    Tsuruta, H, J. Chotpitayasunon, B. Thana, P. Khatri, T. Takamura, T. Hayasaka, T. Nakajima

    Proc. 14th CEReS Int'l Symposium and SKYNET Workshop on "Remote Sensing of the Atmosphere for Better Understanding of Climate Change" 22-25 2008/11

  65. Characterization of Asian aerosols at Fukue-jima island using in-situ observation and remote sensing data

    Hibino, M, Y. Inoue, M. Kuji, S. Hayashida, T. Hayasaka

    Proc. 14th CEReS Int'l Symposium and SKYNET Workshop on "Remote Sensing of the Atmosphere for Better Understanding of Climate Change" 18-21 2008/11

  66. Relative contributions to surface shortwave irradiance over China: A new index of potential radiative forcing Peer-reviewed

    K. Kawamoto, T. Hayasaka

    GEOPHYSICAL RESEARCH LETTERS 35 (17) 2008/09

    DOI: 10.1029/2008GL035083  

    ISSN: 0094-8276

    eISSN: 1944-8007

  67. Aerosol trends over China, 1980-2000 Peer-reviewed

    David G. Streets, Carolyne Yu, Ye Wu, Mian Chin, Zongci Zhao, Tadahiro Hayasaka, Guangyu Shi

    ATMOSPHERIC RESEARCH 88 (2) 174-182 2008/05

    DOI: 10.1016/j.atmosres.2007.10.016  

    ISSN: 0169-8095

    eISSN: 1873-2895

  68. Data quality assessment and the long-term trend of ground solar radiation in China Peer-reviewed

    Guang-Yu Shi, Tadahiro Hayasaka, Atsumu Ohmura, Zhi-Hua Chen, Biao Wang, Jian-Qi Zhao, Hui-Zheng Che, Li Xu

    JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY 47 (4) 1006-1016 2008/04

    DOI: 10.1175/2007JAMC1493.1  

    ISSN: 1558-8424

    eISSN: 1558-8432

  69. Temporal and spatial variations of the atmospheric CO2 concentration in China Peer-reviewed

    Dongqi Zhang, Jie Tang, Guangyu Shi, Takakiyo Nakazawa, Shuji Aoki, Satoshi Sugawara, Min Wen, Shinji Morimoto, Prabir K. Patra, Tadahiro Hayasaka, Tazu Saeki

    GEOPHYSICAL RESEARCH LETTERS 35 (3) 2008/02

    DOI: 10.1029/2007GL032531  

    ISSN: 0094-8276

  70. Diagnosing recent CO emissions and ozone evolution in East Asia using coordinated surface observations, adjoint inverse modeling, and MOPITT satellite data Peer-reviewed

    H. Tanimoto, Y. Sawa, S. Yonemura, K. Yumimoto, H. Matsueda, I. Uno, T. Hayasaka, H. Mukai, Y. Tohjima, K. Tsuboi, L. Zhang

    ATMOSPHERIC CHEMISTRY AND PHYSICS 8 (14) 3867-3880 2008

    DOI: 10.5194/acp-8-3867-2008  

    ISSN: 1680-7316

    eISSN: 1680-7324

  71. Diagnosing recent CO emissions and springtime O3 evolution in East Asia from coordinated ground-based observations of O3 and CO during the East Asian Regional Experiment (EAREX) 2005 campaign. Peer-reviewed

    Tanimoto, H, Y. Sawa, S. Yonemura, K. Yumimoto, H. Matsueda, I. Uno, T. Hayasaka, H. Mukai, Y. Tohjima, L. Zhang

    Atmos. Chem. Phys. 8 3867-3880 2008

  72. Vertical distribution and optical properties of aerosols observed over Japan during the Atmospheric Brown Clouds-East Asia Regional Experiment 2005 Peer-reviewed

    Tadahiro Hayasaka, Shinsuke Satake, Atsushi Shimizu, Nobuo Sugimoto, Ichiro Matsui, Kazuma Aoki, Yoshitaka Muraji

    Journal of Geophysical Research Atmospheres 112 (22) 2007/11/27

    Publisher: Blackwell Publishing Ltd

    DOI: 10.1029/2006JD008086  

    ISSN: 0148-0227

  73. Widespread pollution events of carbon monoxide observed over the western North Pacific during the East Asian Regional Experiment (EAREX) 2005 campaign Peer-reviewed

    Yousuke Sawa, Hiroshi Tanimoto, Seiichiro Yonemura, Hidekazu Matsueda, Akira Wada, Shoichi Taguchi, Tadahiro Hayasaka, Haruo Tsuruta, Yasunori Tohjima, Hitoshi Mukai, Nobuyuki Kikuchi, Syuichiro Katagiri, Kazuhiro Tsuboi

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 112 (D22) 2007/11

    DOI: 10.1029/2006JD008055  

    ISSN: 2169-897X

    eISSN: 2169-8996

  74. Vertical distribution and optical properties of aerosols observed over japan during the atmospheric brown clouds-east Asia regional experiment 2005 Peer-reviewed

    Tadahiro Hayasaka, Shinsuke Satake, Atsushi Shimizu, Nobuo Sugimoto, Ichiro Matsui, Kazuma Aoki, Yoshitaka Muraji

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 112 (D22) 2007/10

    DOI: 10.1029/2006JD008086  

    ISSN: 2169-897X

    eISSN: 2169-8996

  75. Temporal variations of atmospheric carbon dioxide in the southernmost part of Japan Peer-reviewed

    Xia Zhang, Takakiyo Nakazawa, Misa Ishizawa, Shuji Aoki, Shin-Ichiro Nakaoka, Satoshi Sugawara, Shamil Maksyutov, Tazu Saeki, Tadahiro Hayasaka

    TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY 59 (4) 654-663 2007/09

    DOI: 10.1111/j.1600-0889.2007.00288.x  

    ISSN: 0280-6509

  76. A Gauge-based analysis of daily precipitation over East Asia Peer-reviewed

    Pingping Xie, Akiyo Yatagai, Mingyue Chen, Tadahiro Hayasaka, Yoshihiro Fukushima, Changming Liu, Song Yang

    JOURNAL OF HYDROMETEOROLOGY 8 (3) 607-626 2007/06

    DOI: 10.1175/JHM583.1  

    ISSN: 1525-755X

  77. An Asian emission inventory of anthropogenic emission sources for the period 1980-2020 Peer-reviewed

    T. Ohara, H. Akimoto, J. Kurokawa, N. Horii, K. Yamaji, X. Yan, T. Hayasaka

    ATMOSPHERIC CHEMISTRY AND PHYSICS 7 (16) 4419-4444 2007

    ISSN: 1680-7316

    eISSN: 1680-7324

  78. Land cover in East Asia classified using Terra MODIS and DMSP OLS products Peer-reviewed

    M. Matsuoka, T. Hayasaka, Y. Fukushima, Y. Honda

    INTERNATIONAL JOURNAL OF REMOTE SENSING 28 (1-2) 221-248 2007/01

    DOI: 10.1080/01431160600675911  

    ISSN: 0143-1161

  79. Atmospheric Turbid Conditions due to Fine Particles in Recent Years at Nagasaki, Japan. Peer-reviewed

    Arao, K, M. Nishikawa, S. Hatakeyama, A. Takami, S. Matsuyama, T. Hayasaka

    J. Environmental Studies, Nagasaki University 9 23-30 2006/12

  80. Changes in water cycle in human-nature system over East Asia.

    Hayasaka, T

    Proceedings of RIHN 1st International Symposium, Water and Better Human Life in the Future, Nov. 6-8, 2006, Kyoto, Japan 29-33 2006/11

  81. A correlative study on the relationship between modeled anthropogenic aerosol concentration and satellite-observed cloud properties over east Asia Peer-reviewed

    K. Kawamoto, T. Hayasaka, I. Uno, T. Ohara

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 111 (D19) 2006/10

    DOI: 10.1029/2005JD006919  

    ISSN: 2169-897X

    eISSN: 2169-8996

  82. Vertical distribution and optical properties of aerosols observed over Japan in spring 2005.

    Hayasaka, T, K. Aoki, A. Shimizu, N. Sugimoto, I. Matsui, S. Satake, Y. Muraji

    Proceedings of the 23rd International Laser radar Conference, 24-28 July, 2006, Nara, Japan 639-642 2006/07

  83. Importance of aerosols in satellite-derived estimates of surface shortwave irradiance over China Peer-reviewed

    T Hayasaka, K Kawamoto, GY Shi, A Ohmura

    GEOPHYSICAL RESEARCH LETTERS 33 (6) 2006/03

    DOI: 10.1029/2005GL025093  

    ISSN: 0094-8276

    eISSN: 1944-8007

  84. The aerosol indirect effects examined by numerically calculated aerosols and satellite derived clouds

    Kazuaki Kawamoto, Tadahiro Hayasaka, Itsushi Uno, Toshimasa Ohara

    12th Conference on Cloud Physics, and 12th Conference on Atmospheric Radiation 2006

  85. Correspondence of the low cloud microphysics to the aerosol amount over China. Peer-reviewed

    Kawamoto, K, T. Hayasaka, I. Uno

    IRS2004: Current Problems in Atmospheric Radiation 443-445 2006

  86. Estimation of agricultural area in large irrigation districts in Yellow River basin of China using AVHRR combined with ETM

    Masayuki Matsuoka, Yoshihiro Fukushima, Tadahiro Hayasaka, Yoshiaki Honda, Taikan Oki

    2006 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-8 1142-+ 2006

    DOI: 10.1109/IGARSS.2006.295  

    ISSN: 2153-6996

  87. Long-term trend of surface shortwave radiation over China. Peer-reviewed

    Hayasaka, T, K. Kawamoto, J.-Q. Xu, G.-Y. Shi

    IRS2004: Current Problems in Atmospheric Radiation 395-398 2006

  88. Characteristics of sulfate haze over East Asia retrieved with satellite and ground-based remote sensing data Peer-reviewed

    Makoto Kuji, Sachiko Hayashida, Masataka Shiobara, Masanori Yabuki, Keiichiro Hara, Hiroshi Kobayashi, Tadahiro Hayasaka, Shinsuke Satake

    REMOTE SENSING OF THE ATMOSPHERE AND CLOUDS 6408 64080R 2006

    DOI: 10.1117/12.693033  

    ISSN: 0277-786X

    eISSN: 1996-756X

  89. Observations of atmospheric CO2 concentration and its carbon isotopic ratio in China.

    Sugawara, S, S. Aoki, T. Nakazawa, J. Tang, D. Zhang, G.-Y. Shi, Y. Liu, S. Morimoto, S. Ishidoya, T. Saeki, T. Hayasaka, M. Ishizawa

    Proceeding of 7th International Carbon Dioxide Conference, September 25-30, 2005, Broomfield, USA provided by CD 2005/09

  90. Temporal variations of the atmospheric CO2 concentration in the southmost part of Japan.

    Zhang, X, T. Nakazawa, S. Aoki, S. Nakaoka, M. Ishizawa, S. Maksyutov, S. Sugawara, T. Saeki, T. Hayasaka

    Proceedings of the 7th International Carbon Dioxide Conference, September 25-30, 2005, Broomfield, USA provided by CD 2005/09

  91. Seasonal and long-term variations of shortwave radiation in China.

    Hayasaka, T, K. Kawamoto, J. Xu, G. Y. Shi

    Proc. The CEReS International Symposium on Radiation Budget and Atmospheric Parameters Studied by Satellite and Ground Observation Data, 17-18 February, 2005, Chiba University, Japan 132-135 2005/02

  92. Analysis of the land cover change in large irrigated districts in the yellow river basin using time series of landsat and AVHRR

    M. Matsuoka, Y. Fukushima, T. Hayasaka, Y. Honda, T. Oki

    Asian Association on Remote Sensing - 26th Asian Conference on Remote Sensing and 2nd Asian Space Conference, ACRS 2005 1 427-431 2005

  93. Radiation and aerosol measurements in ABC project.

    Hayasaka, T, T. Nakajima, T. Takamura, B. J. Sohn

    Proc. Forth ADEC Workshop, 26-28 January 2005, Nagasaki, Japan 45-48 2005/01

  94. Relationship between the low-level cloud fields from satellites and precipitation from ground over China.

    Kawamoto, K, T. Hayasaka

    Proc. 2nd International Workshop on Yellow River Studies, 8-10 November 2004, Kyoto 104-105 2004/11

  95. Daily precipitation analysis over East Asia: Algorithm, validation and products.

    Xie, P, A. Yatagai, M. Chen, T. Hayasaka, Y. Fukushima, C. Liu

    Proc. 2nd International Workshop on Yellow River Studies, 8-10 November 2004, Kyoto 92-94 2004/11

  96. Examining the aerosol indirect effect over China using an SO2 emission inventory Peer-reviewed

    K Kawamoto, T Hayasaka, T Nakajima, D Streets, JH Woo

    ATMOSPHERIC RESEARCH 72 (1-4) 353-363 2004/11

    DOI: 10.1016/j.atmosres.2004.03.028  

    ISSN: 0169-8095

  97. Evaluation of long-term surface shortwave radiation data in China.

    Hayasaka, T, K. Kawamoto, J. Xu, G. Y. Shi

    Proc. 2nd International Workshop on Yellow River Studies, 8-10 November 2004, Kyoto 90-91 2004/11

  98. Relationship between the low-level cloud fields from satellites and precipitation from ground over China. Peer-reviewed

    Kawamoto, K, T. Hayasaka

    Proc. 14th International Conference on Clouds and Precipitation, 19-23 July 2004, Bologna, Italy 554-555 2004/07

  99. Seasonal variations of clouds, aerosols and shortwave radiation over China. Peer-reviewed

    Hayasaka, T, K. Kawamoto, J. Xu

    Proc. 14th International Conference on Clouds and Precipitation, 19-23 July 2004, Bologna, Italy 387-388 2004/07

  100. Estimates of downward surface radiation over China

    Xu, J, T. Hayasaka, K. Kawamoto, S. Haginoya

    Yellow River Studies News Letter 2 14-21 2004/03/01

  101. Surface radiation budget over China

    Kawamoto, K, J. Xu, T. Hayasaka

    Yellow River Studies News Letter 2 2-5 2004/03/01

  102. Satellite-derived cloud properties over China

    K. Kawamoto, T. Hayasaka

    International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives 35 774-777 2004

    Publisher: International Society for Photogrammetry and Remote Sensing

    ISSN: 1682-1750

  103. Analysis of the land cover and its change over Yellow River basin using satellite data

    M. Matsuoka, T. Hayasaka, Y. Fukushima, Y. Honda

    International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives 35 836-839 2004

    ISSN: 1682-1750

  104. Land cover classification over Yellow River basin using satellite data

    M Matsuoka, T Hayasaka, Y Fukushima, Y Honda

    IGARSS 2004: IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM PROCEEDINGS, VOLS 1-7 1 231-234 2004

  105. An analysis of daily precipitation over East Asia: the test product and its applications.

    Xie, P, M. Chen, A. Yatagai, T. Hayasaka, Y. Fukushima

    Eos Trans. AGU, 85(28), West. Pac. Geophys. Meet. Suppl. Abstract H51A-01 2004

  106. A multi-spectral non-local method for retrieval of boundary layer cloud properties from optical remote sensing data Peer-reviewed

    H Iwabuchi, T Hayasaka

    REMOTE SENSING OF ENVIRONMENT 88 (3) 294-308 2003/12

    DOI: 10.1016/j.rse.2003.08.005  

    ISSN: 0034-4257

  107. Long-term analysis of the cloud parameters derived from AVHRR data.

    Kawamoto, K, T. Nakajima, T. Hayasaka

    International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol. XXXIV, Part. 7/W14, J4, International Workshop on Monitoring and Modeling of Global Environmental Change, 21-22 October 2003, Kyoto, Japan 1-4 2003/10

  108. Parameterization of the effect of cloud condensation nuclei on optical properties of a non-precipitating water layer cloud Peer-reviewed

    N Kuba, H Iwabuchi, K Maruyama, T Hayasaka, T Takeda, T Fujiyoshi

    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN 81 (2) 393-414 2003/04

    DOI: 10.2151/jmsj.81.393  

    ISSN: 0026-1165

  109. Aerosol and radiation measurements in Fukue-jima and Amamiohshima islands, Japan during APEX-E3 campaign

    T Hayasaka, S Ohta, T Takamura, N Kikuchi, N Sugimoto, Matsui, I, S Hatakeyama, A Takami, T Miyoshi, H Tsuruta, M Uematsu, T Takano, M Shiobara, M Yabuki, S Mukai, Sano, I, M Yasumoto

    SIXTH INTERNATIONAL SYMPOSIUM ON TROPOSPHERIC PROFILING: NEEDS AND TECHNOLOGIES 222-224 2003

  110. Perspective and Framework of an Innovative Research Project on the Hydrological Water Cycle and Water Resources Management in the Yellow River Basin

    Tsugihiro Watenabe, Yoshihiro Fukushima, Tadahiro Hayasaka, Taikan Oki

    PROCEEDINGS OF THE 1ST INTERNATIONAL YELLOW RIVER FORUM ON RIVER BASIN MANAGEMENT, VOL II Vol. II 23-29 2003

  111. Possible effects on low-level cloud properties by anthropogenic SO2 emission

    K Kawamoto, T Hayasaka, T Nakajima

    SIXTH INTERNATIONAL SYMPOSIUM ON TROPOSPHERIC PROFILING: NEEDS AND TECHNOLOGIES 300-302 2003

  112. Effects of cloud horizontal inhomogeneity on the optical thickness retrieved from moderate-resolution satellite data Peer-reviewed

    H Iwabuchi, T Hayasaka

    JOURNAL OF THE ATMOSPHERIC SCIENCES 59 (14) 2227-2242 2002/07

    DOI: 10.1175/1520-0469(2002)059<2227:EOCHIO>2.0.CO;2  

    ISSN: 0022-4928

  113. Cloud inhomogeneity effect on the retrieval of cloud optical thickness from satellite measurement Peer-reviewed

    H Iwabuchi, T Hayasaka

    OPTICAL REMOTE SENSING OF THE ATMOSPHERE AND CLOUDS II 4150 330-338 2001

    DOI: 10.1117/12.416974  

    ISSN: 0277-786X

  114. Effect of cloud condensation nuclei on the optical properties of a layer cloud: Numerical simolation with cloud-microphysical model.

    Kuba, N, H. Iwabuchi, K. Maruyama, T. Hayasaka, T. Takeda

    Present and Future of Modeling Global Environmental Change: Toward Integrated Modeling, edited by T. Matsuno and H. Kida, The 14th Toyota Conference, Terra Scientific Company, Tokyo, Japan 373-374 2001

  115. Combined measurements of cloud using satellites, aircraft and groundbased instruments Peer-reviewed

    T Hayasaka, H Iwabuchi

    OPTICAL REMOTE SENSING OF THE ATMOSPHERE AND CLOUDS II 4150 235-242 2001

    DOI: 10.1117/12.416962  

    ISSN: 0277-786X

  116. Retrieval of the optical thickness of inhomogeneous clouds from multispectral satellite measurements.

    Kikuchi, N, H. Iwabuchi, T. Hayasaka

    Proceedings of CEReS International Symposium on "Remote Sensing of the Atmosphere and Validation of Satellite Data", Center for Environmental Remote Sensing, Chiba Univ., Chiba, Japan 101-105 2001

  117. The retrieval of effective particle radius and liquid water path of low-level marine clouds from NOAA AVHRR data Peer-reviewed

    M Kuji, T Hayasaka, N Kikuchi, T Nakajima, M Tanaka

    JOURNAL OF APPLIED METEOROLOGY 39 (7) 999-1016 2000/07

    DOI: 10.1175/1520-0450(2000)039<0999:TROEPR>2.0.CO;2  

    ISSN: 0894-8763

  118. Wintertime precipitation behavior in the western Canadian Arctic region Peer-reviewed

    Yoshio Asuma, Yusuke Inoue, Katsuhiro Kikuchi, Masahiro Kajikawa, Noboru Sato, Tadahiro Hayasaka

    Journal of Geophysical Research Atmospheres 105 (11) 14927-14939 2000/06/16

    Publisher: Blackwell Publishing Ltd

    DOI: 10.1029/1999JD901124  

    ISSN: 0148-0227

  119. Wintertime precipitation behavior in the western Canadian Arctic region Peer-reviewed

    Y Asuma, Y Inoue, K Kikuchi, M Kajikawa, N Sato, T Hayasaka

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 105 (D11) 14927-14939 2000/06

    DOI: 10.1029/1999JD901124  

    ISSN: 2169-897X

  120. Evaluation of satellite remote sensing of cloud

    Hayasaka T, H. Iwabuchi, N. Kikuchi

    Proceedings of the First International Workshop on Spaceborne Cloud Profiling Radar, 24-26 January 2000, Tsukuba, Japan 95-98 2000/01

  121. Optical properties and size distribution of aerosols derived from simultaneous measurements with lidar, a sunphotometer, and an aureolemeter Peer-reviewed

    T Hayasaka, Y Meguro, Y Sasano, T Takamura

    APPLIED OPTICS 38 (9) 1630-1635 1999/03

    DOI: 10.1364/AO.38.001630  

    ISSN: 1559-128X

    eISSN: 2155-3165

  122. Stratification and size distribution of aerosols retrieved from simultaneous measurements with lidar, a sunphotometer, and an aureolemeter Peer-reviewed

    Tadahiro Hayasaka, Yasuhiko Meguro, Yasuhiko Sasano, Tamio Takamura

    Applied Optics 37 (6) 961-970 1998/02/20

    DOI: 10.1364/AO.37.000961  

    ISSN: 2155-3165 1559-128X

  123. Stratification and size distribution of aerosols retrieved from simultaneous measurements with lidar, a sunphotometer, and an aureolemeter Peer-reviewed

    T Hayasaka, Y Meguro, Y Sasano, T Takamura

    APPLIED OPTICS 37 (6) 961-970 1998/02

    DOI: 10.1364/AO.37.000961  

    ISSN: 0003-6935

  124. The observations of liquid water, water vapor, and downward flux of infrared radiation in the Arctic region with a microwave radiometer and a pyrgeometer. Peer-reviewed

    Ishida, H, T. Hayasaka, M. Kajikawa, K. Kikuchi, H. Uyeda, Y. Asuma, Y. Inoue

    Proc. NIPR Symp. Polar Meteorol. Glaciol. 12 10-18 1998

    Publisher: National Institute of Polar Research

    ISSN: 1344-3437

    More details Close

    Observations of cloud liquid water path, columnar water vapor amount, and downward flux of infrared radiation in the Arctic region Inuvik, Canada and Kiruna, Sweden, during winter were carried out with a microwave radiometer and a pyrgeometer. The algorithm used in this study for the retrieval of liquid water path and columnar water vapor amount from measured intensity of microwave radiation requires the atmospheric temperature profile and the cloud temperature, which were obtained from radiosonde measurements. It was shown from microwave radiometer measurements that the columnar water vapor amount changed between 1-13kgm^<-2> during about a month in both observation points, and supercooled liquid water existed on several days. At Inuvik liquid water path reached about 0.25kgm^<-2> at most; this is comparable to a typical value of summer clouds in mid-latitude. It was also shown that the downward flux of infrared radiation on the ground surface changed between 130 Wm^2&acd;300Wm^<-2>. Finally, the downward flux of infrared radiation was calculated using the liquid water path retrieved from the microwave radiometer and water vapor and temperature profiles obtained from radiosonde observations. A comparison between the calculated and the measured values shows that both are in good agreement and the downward flux of infrared radiation in the Arctic region is primarily dependent on the water vapor amounts and temperature profile.

  125. Rainfall distribution over the Asian continent retrieved from SSM/I data Peer-reviewed

    T Hayasaka, H Murata, BL Zhao, YJ Zhu, WB Li

    MICROWAVE REMOTE SENSING OF THE ATMOSPHERE AND ENVIRONMENT 3503 108-114 1998

    DOI: 10.1117/12.319501  

    ISSN: 0277-786X

  126. Retrieval of cloud physical parameters from ground based observations of microwave atmospheric radiation and transmitted solar radiation Peer-reviewed

    H Ishida, T Hayasaka, M Tanaka

    MICROWAVE REMOTE SENSING OF THE ATMOSPHERE AND ENVIRONMENT 3503 414-422 1998

    DOI: 10.1117/12.319493  

    ISSN: 0277-786X

  127. Observational study on the radiative properties of atmospheric aerosols over China.

    Shi, G.-Y, T. Nakajima, T. Takamura, T. Hayasaka, L. Xu, B. Wang, X. Jin, X.-B. Fan, R.-M. Hu, P. Zhang, L.-S. Zhang, X.-H. Wang, L.-X. Wang, H. Zhang

    Proceedings of the international symposium on the atmospheric correction of satellite data and its application to global environment 280-283 1998

  128. Simultaneous determination of the aerosol complex index of refraction and size distribution from scattering measurements of polarized light Peer-reviewed

    FS Zhao, ZB Gong, HL Hu, M Tanaka, T Hayasaka

    APPLIED OPTICS 36 (30) 7992-8001 1997/10

    DOI: 10.1364/AO.36.007992  

    ISSN: 0003-6935

  129. Satellite remote sensing of summer stratus clouds over the Western North-Pacific. Peer-reviewed

    Hayasaka, T, H. Kawamura, Y. Sato, H. Takai

    Proceedings of 12th International Conference on Clouds and Precipitation, 19-23, August, 1996, Zurich, Switzerland 31-34 1996/08

  130. Aerosol optical properties in the Iranian region obtained by ground-based solar radiation measurements in the summer of 1991 Peer-reviewed

    T Nakajima, T Hayasaka, A Higurashi, G Hashida, N MoharramNejad, Y Najafi, H Valavi

    JOURNAL OF APPLIED METEOROLOGY 35 (8) 1265-1278 1996/08

    DOI: 10.1175/1520-0450(1996)035<1265:AOPITI>2.0.CO;2  

    ISSN: 0894-8763

  131. Recent studies on satellite remote sensing of clouds in Japan Peer-reviewed

    T Hayasaka

    SATELLITE DATA FOR ATMOSPHERE, CONTINENT AND OCEAN RESEARCH 18 (7) 29-36 1996

    DOI: 10.1016/0273-1177(95)00286-3  

    ISSN: 0273-1177

  132. ABSORPTION OF SOLAR-RADIATION BY STRATOCUMULUS CLOUDS - AIRCRAFT MEASUREMENTS AND THEORETICAL CALCULATIONS Peer-reviewed

    T HAYASAKA, N KIKUCHI, M TANAKA

    JOURNAL OF APPLIED METEOROLOGY 34 (5) 1047-1055 1995/05

    DOI: 10.1175/1520-0450(1995)034<1047:AOSRBS>2.0.CO;2  

    ISSN: 0894-8763

  133. Satellite remote sensing of water vapor, cloud and rainfall in the Asian Monsoon region.

    Hayasaka, T, I. Takizawa, M. Kuji

    Proceedings of 2nd International Study Conference on GEWEX in Asia and GAME, 6-10 March 1995, Pattaya, Thailand 512-515 1995/03

  134. MEASUREMENT OF VERTICAL LIQUID WATER PATH BY MEANS OF AN AIRBORNE RADIOMETER AND THE SHORTWAVE ALBEDO OF MARINE LOW-LEVEL CLOUDS DURING WENPEX IN JAPAN Peer-reviewed

    Y FUJIYOSHI, Y ISHIZAKA, T TAKEDA, T HAYASAKA, M TANAKA

    JOURNAL OF APPLIED METEOROLOGY 34 (2) 471-481 1995/02

    ISSN: 0894-8763

  135. GEOMETRICAL THICKNESS, LIQUID WATER-CONTENT, AND RADIATIVE PROPERTIES OF STRATOCUMULUS CLOUDS OVER THE WESTERN NORTH PACIFIC Peer-reviewed

    T HAYASAKA, T NAKAJIMA, Y FUJIYOSHI, Y ISHIZAKA, T TAKEDA, M TANAKA

    JOURNAL OF APPLIED METEOROLOGY 34 (2) 460-470 1995/02

    ISSN: 0894-8763

  136. Tropospheric aerosol optical properties derived from lidar, sun photometer, and optical particle counter measurements Peer-reviewed

    Tamio Takamura, Yasuhiro Sasano, Tadahiro Hayasaka

    Applied Optics 33 (30) 7132-7140 1994/10/20

    DOI: 10.1364/AO.33.007132  

    ISSN: 2155-3165 1559-128X

  137. TROPOSPHERIC AEROSOL OPTICAL-PROPERTIES DERIVED FROM LIDAR, SUN PHOTOMETER, AND OPTICAL-PARTICLE COUNTER MEASUREMENTS Peer-reviewed

    T TAKAMURA, Y SASANO, T HAYASAKA

    APPLIED OPTICS 33 (30) 7132-7140 1994/10

    DOI: 10.1364/AO.33.007132  

    ISSN: 0003-6935

  138. AIR TRUTH VALIDATION OF CLOUD ALBEDO ESTIMATED FROM NOAA ADVANCED VERY HIGH-RESOLUTION RADIOMETER DATA Peer-reviewed

    T HAYASAKA, M KUJI, M TANAKA

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 99 (D9) 18685-18693 1994/09

    DOI: 10.1029/94JD00964  

    ISSN: 2169-897X

  139. Stratification and size distribution of aerosols derived from simultaneous measurements with lidar and radiometer.

    Hayasaka, T, Y. Meguro, Y. Sanano, T. Takamura

    Proceedings of 17th International Laser Radar Conference, 25-29 July 1994, Sendai, Japan 24-25 1994/07

  140. Tropospheric aerosol measurements using lidar, sunphotometer and particle counter.

    Takamura, T, Y. Sasano, T. Hayasaka

    Proceedings of 17th International Laser Radaar Conference, 25-29 July 1994, Sendai, Japan 89-90 1994/07

  141. CHANGES IN STRATOSPHERIC AEROSOLS AND SOLAR INSOLATION DUE TO MT-PINATUBO ERUPTION AS OBSERVED OVER THE WESTERN PACIFIC Peer-reviewed

    T HAYASAKA, N IWASAKA, G HASHIDA, TAKIZAWA, I, M TANAKA

    GEOPHYSICAL RESEARCH LETTERS 21 (12) 1137-1140 1994/06

    DOI: 10.1029/94GL00987  

    ISSN: 0094-8276

  142. Roughness of cloud top surface of winter stratocumulus clouds over the ocean -Preliminary investigations on cloud and radiation. Peer-reviewed

    Kikuchi, K, T. Aoyama, Y. Asuma, T. Taniguchi, T. Takeda, M. Tanaka, T. Hayasaka

    J. Fac. Sci. Hokkaido Univ., Ser. VII 9 (4) 381-403 1994

    Publisher: Hokkaido University

  143. Measurements of the atmospheric aerosol optical properties in HEIFE area

    Shi, G. Y, X. B. Fan, J. D. Guo, L. Zu, R. M. Hu, J. P. Chen, B. Wang, M. Tanaka, T. Hayasaka

    Proceeding of International Symposium on HEIFE 640-646 1994

  144. Satellite remote sensing and air-truth validation of cloud liquid water path and droplet effective radius. Peer-reviewed

    Hayasaka, T, M. Kuji, T. Nakajima, M. Tanaka

    Proceedings of 8th Conference on Atmospheric Radiation, 23-28 January 1994, Nashville, Tennessee, USA 421-422 1994/01

  145. Stratospheric aerosol increase after eruption of Pinatubo observed with lidar and aureolemeter.

    Hayashida, S, Y. Sasano, H. Nakane, I. Matsui, T. Hayasaka

    NASA. Goddard Space Flight Center, Ozone in the Troposphere and Stratosphere Part 2 635-638 1994

  146. Radiative properties of inhomogeneous stratocumulus clouds observed over the Wetern North-Pacific Ocean. Peer-reviewed

    Hayasaka, T, N. Kikuchi, M. Tanaka

    Proceedings of 8th Conference on Atmospheric Radiation, 23-28 January 1994, Nashville, Tennessee, USA 156-157 1994/01

  147. Remote sensing of Persian Gulf oil fire aerosols. Peer-reviewed

    Nakajima, T, A. Higurashi, T. Hayasaka, Y. Najafi

    Proceedings of 8th Conference on Atmospheric Radiation, 23-28 January 1994, Nashville, Tennessee, USA 386-388 1994/01

  148. STRUCTURE AND REFLECTANCE OF WINTER MARITIME STRATOCUMULUS CLOUDS Peer-reviewed

    K KIKUCHI, Y ASUMA, T TANIGUCHI, M KANNO, M TANAKA, T HAYASAKA, T TAKEDA, Y FUJIYOSHI

    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN 71 (6) 715-731 1993/12

    DOI: 10.2151/jmsj1965.71.6_715  

    ISSN: 0026-1165

    eISSN: 2186-9057

  149. Air-truth of total vertical liquid water path (LWP) measured with a microwave radiometer and the relationship between LWP and shortwave cloud albedo.

    Fujiyoshi, Y, T. Hayasaka, Y. Ishizaka, T. Takeda, M. Tanaka

    Extended Abstracts of International WCRP Symposium, Japanese National Committee for WCRP and Nagoya University, Nagoya, Japan 7.2-7.4 1993/10

  150. Air-truth validation of cloud albedo estimated from NOAA AVHRR data.

    Hayasaka, T, M. Kuji, M. Tanaka

    Extended Abstracts of International WCRP Symposium, Japanese National Committee for WCRP and Nagoya University, Nagoya, Japan 7.38-7.41 1993/10

  151. REMOTE-SENSING PERSIAN-GULF OIL FIRE AEROSOLS

    A HIGURASHI, T NAKAJIMA, T HAYASAKA, Y NAJAFI

    IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV IEEE Catalog Number: 93CH3294- 1956-1958 1993

  152. Remote sensing of low level cloud optical characteristics.

    Nakajima, T, T. Hayasaka

    Science and Technology Agency, Asia-Pacific ISY Conference, Japan 2 107-110 1993

  153. OPTICAL AND CHEMICAL-PROPERTIES OF URBAN AEROSOLS IN SENDAI AND SAPPORO, JAPAN Peer-reviewed

    T HAYASAKA, T NAKAJIMA, S OHTA, M TANAKA

    ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS 26 (11) 2055-2062 1992/08

    ISSN: 0004-6981

  154. Estimation of cloud geometrical thickness using 0.9 μm water vapor absorption band. Peer-reviewed

    Hayasaka, T, M. Tanaka, T. Nakajima

    Proceedings of 11th International Conference on Clouds and Precipitation, 17-21, August, 1992, Montreal, Canada 805-806 1992/07

  155. Aerosol monitoring using a scanning spectral radiometer in Sendai, Japan Peer-reviewed

    Masataka Shiobara, Tadahiro Hayasaka, Teruyuki Nakajima, Masayuki Tanaka

    Journal of the Meteorological Society of Japan 69 (1) 57-70 1991/01/01

    Publisher: Meteorological Society of Japan

    DOI: 10.2151/jmsj1965.69.1_57  

    ISSN: 0026-1165

  156. THE COARSE PARTICLE AEROSOLS IN THE FREE TROPOSPHERE AROUND JAPAN Peer-reviewed

    T HAYASAKA, T NAKAJIMA, M TANAKA

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 95 (D9) 14039-14047 1990/08

    DOI: 10.1029/JD095iD09p14039  

    ISSN: 2169-897X

  157. AIRBORNE MEASUREMENTS OF OPTICAL-PROPERTIES OF TROPOSPHERIC AEROSOLS OVER AN URBAN AREA Peer-reviewed

    M TANAKA, T HAYASAKA, T NAKAJIMA

    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN 68 (3) 335-345 1990/06

    DOI: 10.2151/jmsj1965.68.3_335  

    ISSN: 0026-1165

    eISSN: 2186-9057

  158. Estimation of the index of absorption of aerosols from spectral measurements of th e flux of solar radiation.

    Tanaka, M, T. Nakajima, T. Hayasaka

    Atmospheric Radiation Progress and Process 584-588 1987

  159. Atmospheric turbidity monitoring by use of a scanning radiometer.

    Tanaka, M, T. Nakajima, M. Shiobara, T. Hayasaka

    Atmospheric Radiation Progress and Process 589-595 1987

  160. AIRBORNE MEASUREMENTS OF THE OPTICAL STRATIFICATION OF AEROSOLS IN TURBID ATMOSPHERES Peer-reviewed

    T NAKAJIMA, M TANAKA, T HAYASAKA, Y MIYAKE, Y NAKANISHI, K SASAMOTO

    APPLIED OPTICS 25 (23) 4374-4381 1986/12

    DOI: 10.1364/AO.25.004374  

    ISSN: 0003-6935

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    ISSN: 0546-0921

  5. 全球光学イメージング (地球観測の将来構想に関わる世界動向の分析)

    本多 嘉明, 中島 孝, 村上 浩, 菊池 麻紀, 木村 俊義, 森山 雅雄, 奈佐原 顕郎, 早坂 忠裕

    気象研究ノート (234) 11-18 2017/11

    Publisher: 日本気象学会

    ISSN: 0387-5369

  6. 「地球観測の将来構想に関わる世界同行の分析」第4章:全球マイクロ波センサ

    中村健治, 江淵直人, 沖理子, 可知美佐子, 久保田拓志, 青梨和正, 沖大幹, 早坂忠裕, 今岡啓治

    気象研究ノート 234 (234) 19-24 2017/11

    Publisher: 日本気象学会

    ISSN: 0387-5369

  7. 日本学術会議提言「我が国の地球衛星観測のあり方について」

    佐藤薫, 高薮縁, 早坂忠裕

    天気 64 (10) 747-751 2017/10

    Publisher: 日本気象学会

    ISSN: 0546-0921

  8. SKYNETデータによるエアロゾル組成のリモートセンシング

    工藤玲, 入江仁士, 居島修, 高野松美, 竹村俊彦, 西澤智明, 青木一真, 日暮明子, 清水厚, 及川栄治, 山崎明宏, 石田春磨, 早坂忠裕

    日本気象学会大会講演予稿集 (112) 499 2017/09/30

  9. 第4章 全球マイクロ波センサ. 気象研究ノート「地球観測の将来構想に関わる世界動向の分析」 Invited Peer-reviewed

    中村健治, 江淵直人, 沖理子, 可知美佐子, 久保田拓志, 青梨和正, 沖大幹, 早坂忠裕, 今岡啓治

    気象研究ノート「地球観測の将来構想に関わる世界動向の分析」 234 19-24 2017

  10. P349 雲の鉛直分布による雲の放射効果の違い(ポスター・セッション)

    三井 文乃, 早坂 忠裕

    大会講演予講集 108 429-429 2015

    Publisher: 日本気象学会

  11. P352 ニーオルスン基地における雲の変動と放射収支に対する寄与の変化(ポスター・セッション)

    山田 恭平, 早坂 忠裕, 塩原 匡貴

    大会講演予講集 108 432-432 2015

    Publisher: 日本気象学会

  12. P328 東西熱帯太平洋における雲微物理特性の違い(ポスター・セッション)

    高橋 直也, 早坂 忠裕, 岡本 創

    大会講演予講集 108 408-408 2015

    Publisher: 日本気象学会

  13. C208 雲の鉛直分布による大気上端における雲の短波放射効果の違い(観測手法I,一般口頭発表)

    三井 文乃, 早坂 忠裕

    大会講演予講集 107 219-219 2015

    Publisher: 日本気象学会

  14. P304 極域の放射収支と雲および温室効果気体の寄与の変動(ポスター・セッション)

    山田 恭平, 早坂 忠裕

    大会講演予講集 107 322-322 2015

    Publisher: 日本気象学会

  15. A161 MODISデータによる放射フラックスと地上観測サイトおよび他の放射フラックスプロダクトの比較について(地球環境変動観測ミッションGCOMによる全球規模の大気・生態系・雪氷・水循環変動観測計画,専門分科会)

    片桐 秀一郎, 山田 恭平, 岩渕 弘信, 早坂 忠裕

    大会講演予講集 107 139-139 2015

    Publisher: 日本気象学会

  16. 2014年度秋季大会スペシャル・セッション「放射観測に関する気象学・気候変動研究の進展」報告(研究会報告)

    早坂 忠裕, 大河原 望, 高村 民雄, 内山 明博, 三枝 信子, 藤谷 徳之助

    天気 62 (4) 325-327 2015

    Publisher: 日本気象学会

    ISSN: 0546-0921

  17. CloudSat‐CALIPSO衛星データから導出された氷雲の広域特性解析

    山内晃, 河本和明, 早坂忠裕, 岡本創, 萩原雄一朗

    日本気象学会大会講演予稿集 106 (106) 97-97 2014/09/30

    Publisher: 日本気象学会

  18. 雲の衛星観測と気象学・気候変動科学

    早坂忠裕

    日本リモートセンシング学会誌 34 (4) 266-277 2014/09

    Publisher: 日本リモートセンシング学会

    DOI: 10.11440/rssj.34.266  

  19. 雲の放射特性の基礎

    早坂忠裕

    低温科学 72 145-150 2014/03

    Publisher: 北海道大学低温科学研究所

    ISSN: 1880-7593

  20. 「雲の博物館」, 菊地勝弘・山田圭一著, 成山堂書店, 2013年12月, 143頁, 2500円(本体価格), ISBN978-4-425-51341-3(本だな)

    早坂 忠裕

    天気 61 (3) 210-210 2014

    ISSN: 0546-0921

  21. 「大気放射学-衛星リモートセンシングと気候問題へのアプローチ-」, K. N. Liou著, 藤枝鋼・深堀正志共訳, 共立出版, 2014年8月, 646頁, 13,000円(本体価格), ISBN978-4-320-04726-6(本だな)

    早坂 忠裕

    天気 61 (12) 1005-1005 2014

    ISSN: 0546-0921

  22. P220 海上における地表面下向き放射観測の精度(ポスターセッション)

    山田 恭平, 早坂 忠裕, 岩渕 弘信

    大会講演予講集 105 218-218 2014

    Publisher: 日本気象学会

  23. D203 東アジア域における視程の季節変動に関する研究(物質循環,口頭発表)

    大田 彩乃, 久慈 誠, 早坂 忠裕, 石 廣玉

    大会講演予講集 106 347-347 2014

    Publisher: 日本気象学会

  24. P3a8 CALIPSO及びTRMMによるCloudSat雲粒子タイプ識別アルゴリズムの改良(ポスター・セッション)

    平形 麻紀, 岡本 創, 萩原 雄一朗, 早坂 忠裕, 沖 理子

    大会講演予講集 106 529-529 2014

    Publisher: 日本気象学会

  25. C357 海上ブイの下向き放射観測の精度(放射観測に関する気象学・気候変動研究の進展,スペシャル・セッション)

    山田 恭平, 早坂 忠裕

    大会講演予講集 106 578-578 2014

    Publisher: 日本気象学会

  26. P113 大気上端における短波放射強制力の雲の鉛直分布による違い(ポスター・セッション)

    三井 文乃, 早坂 忠裕, 岩渕 弘信

    大会講演予講集 106 195-195 2014

    Publisher: 日本気象学会

  27. わが国の今後の衛星観測計画について

    笹野泰弘, 祖父江真一, 江淵直人, 岡本幸三, 佐藤正樹, 沢田治雄, 中村健治, 早坂忠裕, 本多嘉明

    天気 60 (6) 433-444 2013/06

    Publisher: 日本気象学会

    ISSN: 0546-0921

  28. 7. 福江島観測サイト観測データを用いた大気放射に関する解析

    片桐 秀一郎, 早坂 忠裕

    水産海洋研究 77 (1) 29-30 2013/02/01

    ISSN: 0916-1562

  29. 地球観測衛星研究連絡会2013年度春季大会報告(研究会報告)

    早坂 忠裕, 中島 孝

    天気 60 (9) 767-768 2013

    ISSN: 0546-0921

  30. D365 上層雲の幾何学的厚さの変化とその放射への影響について(大気放射,口頭発表)

    片桐 秀一郎, 山田 恭平, 萩原 雄一朗, 岩渕 弘信, 岡本 創, 早坂 忠裕

    大会講演予講集 104 585-585 2013

    Publisher: 日本気象学会

  31. C209 船舶型スカイラジオメーターから得られる海洋上のエアロゾルの光学的特性(物質循環II,口頭発表)

    青木 一真, 早坂 忠裕

    大会講演予講集 104 336-336 2013

    Publisher: 日本気象学会

  32. D309 雲解像モデルCReSSを用いた夏季北西太平洋域の低層雲の再現実験(中高緯度大気・相互作用,口頭発表)

    吉岡 真由美, 片桐 秀一郎, 早坂 忠裕, 坪木 和久, 榊原 篤志

    大会講演予講集 104 412-412 2013

    Publisher: 日本気象学会

  33. A357 TRMMデータの利用によるCloudSat降水識別の改良(雲エアロゾル放射観測衛星「EarthCARE」の打ち上げに向けて,スペシャル・セッション)

    平形 麻紀, 岡本 創, 萩原 雄一朗, 吉田 良, 早坂 忠裕, 野牧 知之, 沖 理子

    大会講演予講集 104 527-527 2013

    Publisher: 日本気象学会

  34. P387 薄明の空に対するエアロゾルの光学・物理特性の影響(ポスター・セッション)

    齊藤 雅典, 岩渕 弘信, 早坂 忠裕

    大会講演予講集 104 500-500 2013

    Publisher: 日本気象学会

  35. A368 夏季北太平洋の下層雲に及ぼす上層雲の影響(雲エアロゾル放射観測衛星「EarthCARE」の打ち上げに向けて,スペシャル・セッション)

    早坂 忠裕, 片桐 秀一郎, 丸山 拓海, 吉岡 真由美, 岡本 創

    大会講演予講集 104 538-538 2013

    Publisher: 日本気象学会

  36. P374 夏季北太平洋における下層雲の微物理特性の領域による違い(ポスター・セッション)

    丸山 拓海, 早坂 忠裕

    大会講演予講集 104 487-487 2013

    Publisher: 日本気象学会

  37. B219 東シナ海黒潮上における風速強化 : 2012年5月の事例解析(降水システムI,口頭発表)

    万田 敦昌, 若杉 春彦, 濱野 五月, 三井 拓, 山内 晃, 河本 和明, 兼原 壽生, 青島 隆, 清水 健一, 内田 淳, 下田 真子, 八木 光晴, 佐藤 和敏, 久野木 梓織, 関 真理子, 佐々木 実紀, 和田 幸恵, Fathrio Ibnu, 児玉 安正, 飯塚 聡, 松本 佳華, 井上 晃介, 佐藤 由布子, 佐藤 尚毅, 丸山 拓海, 齋藤 雅典, 早坂 忠裕, 日高 拓哉, 松永 拓也, 冨田 智彦, 見延 庄士郎, 茂木 耕作, 川合 義美, 安藤 雄太, 鈴木 はるか, 鈴木 耕二郎, 谷口 佳於里, 立花 義裕

    大会講演予講集 104 327-327 2013

    Publisher: 日本気象学会

  38. P185 視程観測データを用いた東アジア域の大気環境の研究(ポスター・セッション)

    大田 彩乃, 北古賀 識帆, 久慈 誠, 早坂 忠裕, 石 廣玉

    大会講演予講集 104 269-269 2013

    Publisher: 日本気象学会

  39. P425 館野における地表面下向き長波放射フラックスの55年変動(ポスター・セッション)

    山田 恭平, 早坂 忠裕, 岩渕 弘信

    大会講演予講集 103 402-402 2013

    Publisher: 日本気象学会

  40. A309 MODIS赤外バンドから導出した巻雲の特性の全球分布(雲物理,口頭発表)

    岩渕 弘信, 山田 壮一郎, 早坂 忠裕, 片桐 秀一郎

    大会講演予講集 103 261-261 2013

    Publisher: 日本気象学会

  41. P206 The comparison of a Mesoscale Convective System between observation and JMA-NHM Simulations :

    Parichat Wetchayont, Hayasaka Tadahiro, Iwasaki Toshiki, Sawada Masahiro, Satomura Takehiko

    103 221-221 2013

    Publisher: 日本気象学会

  42. C211 ピマイ(タイ)の大気エアロゾルの化学組成と光学特性(第5報) : 乾期におけるAOTとPM2.5粒子との関係(物質循環II,口頭発表)

    鶴田 治雄, 及川 栄治, 井上 豊志郎, Chotpitayasunon Jinchula, Thana Boossarasiri, 高村 民雄, Khatri Pradeep, 世良 耕一郎, 須藤 重人, 米村 正一郎, 竹村 俊彦, 五藤 大輔, 杉本 伸夫, 竹内 渉, 早坂 忠裕, 中島 映至

    大会講演予講集 104 338-338 2013

    Publisher: 日本気象学会

  43. 下層雲の海陸別雲物理量特性 : 2003年ヤマセ雲の事例解析

    江口 菜穂, 早坂 忠裕, 沢田 雅洋

    2012年度秋季大会講演予稿集 102 414-414 2012/09

    Publisher: 日本気象学会

  44. P120 福江島観測サイトでの取得データおよびMTSATデータを用いた大気放射に関する解析(ポスター・セッション)

    片桐 秀一郎, 早坂 忠裕, 清水 厚, 西澤 智明, 松井 一郎, 杉本 伸夫, 高村 民雄

    大会講演予講集 101 145-145 2012

    Publisher: 日本気象学会

  45. P121 薄明の空の色と対流圏エアロゾルとの関係(ポスター・セッション)

    齊藤 雅典, 岩渕 弘信, 早坂 忠裕

    大会講演予講集 101 146-146 2012

    Publisher: 日本気象学会

  46. P144 A Method of Identifying Precipitating Clouds in Thailand using Radar :

    Parichat Wetchayont, Hayasaka Tadahiro, Satomura Takehiko

    101 169-169 2012

    Publisher: 日本気象学会

  47. B305 エアロゾル環境がダスト粒子の雲凝結核としての働きに及ぼす影響(降水システムII,一般口頭発表)

    齋藤 哲彦, 早坂 忠裕, 岩渕 弘信

    大会講演予講集 101 304-304 2012

    Publisher: 日本気象学会

  48. P319 放射因子の地表面下向き長波放射に対する寄与(ポスター・セッション)

    山田 恭平, 早坂 忠裕, 岩渕 弘信

    大会講演予講集 101 349-349 2012

    Publisher: 日本気象学会

  49. P169 夏季北西太平洋の下層雲の微物理特性(ポスター・セッション)

    丸山 拓海, 早坂 忠裕, 岩渕 弘信

    大会講演予講集 102 253-253 2012

    Publisher: 日本気象学会

  50. P109 CloudSat/CALIPSOの複合利用による雲粒子タイプ識別の改良(ポスター・セッション)

    平形 麻紀, 岡本 創, 萩原 雄一朗, 吉田 良, 早坂 忠裕, 沖 理子

    大会講演予講集 102 193-193 2012

    Publisher: 日本気象学会

  51. P148 対流圏エアロゾルの影響を受けた薄明の空の放射伝達過程(ポスター・セッション)

    齊藤 雅典, 岩渕 弘信, 早坂 忠裕

    大会講演予講集 102 232-232 2012

    Publisher: 日本気象学会

  52. P144 MODISの赤外バンドを用いた巻雲の放射特性の抽出(ポスター・セッション)

    山田 壮一郎, 岩渕 弘信, 早坂 忠裕, 片桐 秀一郎

    大会講演予講集 102 228-228 2012

    Publisher: 日本気象学会

  53. A364 ピマイ(タイ)の大気エアロゾルの化学組成と光学特性(第4報) : 乾期と雨期における土壌系粒子の輸送過程と発生源推定(物質循環,口頭発表)

    鶴田 治雄, 及川 栄治, 井上 豊志郎, Chotpitayasunon Jinchula, Thana Boossarasiri, 高村 民雄, 世良 耕一郎, 須藤 重人, 米村 正一郎, 竹村 俊彦, 五藤 大輔, 杉本 伸夫, 早坂 忠裕, 中島 映至

    大会講演予講集 102 369-369 2012

    Publisher: 日本気象学会

  54. C303 館野における地表面下向き長波放射の長期変動に対する寄与の見積もり(大気放射,口頭発表)

    山田 恭平, 早坂 忠裕, 岩渕 弘信

    大会講演予講集 102 409-409 2012

    Publisher: 日本気象学会

  55. C304 福江島地上観測サイトで得られた放射データと衛星データを用いた雲・エアロゾルの放射影響に関する研究(大気放射,口頭発表)

    片桐 秀一郎, 岩渕 弘信, 早坂 忠裕, 清水 厚, 西澤 智明, 松井 一郎, 杉本 伸夫, 高村 民雄

    大会講演予講集 102 410-410 2012

    Publisher: 日本気象学会

  56. Recent advances in radiative transfer calculations and their applications in the meteorology and climate studies

    (223) 1-183,巻頭1枚,巻頭1 2011/09

    Publisher: 日本気象学会

    ISSN: 0387-5369

  57. D405 視程観測データを用いた中国大陸における気候変動の研究(放射,一般口頭発表)

    井上 陽子, 久慈 誠, 早坂 忠裕, 石 廣玉

    大会講演予講集 99 265-265 2011

    Publisher: 日本気象学会

  58. P118 東アジア域とサハラ砂漠域のダストが雲に与える影響の比較検討(ポスター・セッション)

    齋藤 哲彦, 早坂 忠裕

    大会講演予講集 100 367-367 2011

    Publisher: 日本気象学会

  59. P189 CloudSat/CALIPSOの複合利用による雲粒子タイプ識別の初期所見(ポスター・セッション)

    平形 麻紀, 岡本 創, 萩原 雄一朗, 吉田 良, 早坂 忠裕

    大会講演予講集 100 438-438 2011

    Publisher: 日本気象学会

  60. C304 ライダ搭載観測衛星CALIPSOによる雲粒子タイプ識別と相対湿度の関係(雲放射,一般口頭発表)

    平形 麻紀, 岡本 創, 萩原 雄一朗, 吉田 良, 早坂 忠裕

    大会講演予講集 97 149-149 2010

    Publisher: 日本気象学会

  61. P380 視程データを利用した中国におけるエアロゾルの変動の研究(ポスター・セッション)

    井上 陽子, 久慈 誠, 早坂 忠裕, 石広 玉

    大会講演予講集 98 516-516 2010

    Publisher: 日本気象学会

  62. P379 黄砂が雲特性に与える影響に関する研究(ポスター・セッション)

    齋藤 哲彦, 早坂 忠裕

    大会講演予講集 98 515-515 2010

    Publisher: 日本気象学会

  63. D308 ピマイ(タイ)の大気エアロゾルの化学組成と光学特性(第3報) : 乾期における化石燃料燃焼、土壌、及びバイオマス燃焼起源による影響(物質循環II,一般口頭発表)

    鶴田 治雄, Chotpitayasunon Jinchula, Thana Boossarasiri, Khatri Pradeep, 高村 民雄, 竹村 俊彦, 杉本 伸夫, 竹内 渉, 早坂 忠裕, 及川 栄治, 井上 豊志郎, 中島 映至

    大会講演予講集 97 203-203 2010

    Publisher: 日本気象学会

  64. B206 東アジアにおける短波放射変動に対する雲・エアロゾル・水蒸気の寄与の地理分布(気候システムII)

    河本 和明, 早坂 忠裕

    大会講演予講集 96 135-135 2009/10/31

    Publisher: 社団法人日本気象学会

  65. P139 CALIPSOデータを用いたエアロゾルマスクと消散係数の導出

    熊岡 直紀, 岡本 創, 西澤 智明, 萩原 雄一朗, 早坂 忠裕

    大会講演予講集 96 371-371 2009/10/31

    Publisher: 社団法人日本気象学会

  66. P110 東北大学における放射・エアロゾル・雲の観測

    早坂 忠裕, 岡本 創, 萩原 雄一朗, 佐竹 晋輔, 熊岡 直紀, 平形 麻紀, 西澤 智明, 杉本 伸夫, 青木 一真

    大会講演予講集 96 342-342 2009

    Publisher: 日本気象学会

  67. P141 日本上空のエアロゾル層鉛直分布の季節変化

    佐竹 晋輔, 早坂 忠裕, 岡本 創, 清水 厚, 杉本 伸夫, 松井 一郎, 青木 一真, 鵜野 伊津志

    大会講演予講集 96 373-373 2009

    Publisher: 日本気象学会

  68. D360 地上観測とリモートセンシングデータを用いた大気環境の研究 : 視程と大気消散係数(観測手法)

    井上 陽子, 日比野 真弓, 久慈 誠, 早坂 忠裕

    大会講演予講集 96 322-322 2009

    Publisher: 日本気象学会

  69. D201 ピマイ(タイ)における大気エアロゾルの化学組成と光学特性(エアロゾルII)

    鶴田 治雄, Chotpitayasunon Jinchula, Thana Boossarasiri, Khatri Pradeep, 高村 民雄, 早坂 忠裕, 中島 映至

    大会講演予講集 95 213-213 2009

    Publisher: 日本気象学会

  70. C210 ピマイ(タイ)における大気エアロゾルの化学組成と光学特性(第2報)(物質循環・放射)

    鶴田 治雄, Chotpitayasunon Jinchula, Thana Boossarasiri, Khatri Pradeep, 高村 民雄, 早坂 忠裕, 及川 栄治, 井上 豊志郎, 中島 映至

    大会講演予講集 96 216-216 2009

    Publisher: 日本気象学会

  71. P183 ライダ搭載観測衛星CALIPSOによる雲粒子タイプの全球季節変動解析

    平形 麻紀, 岡本 創, 萩原 雄一朗, 吉田 良, 早坂 忠裕

    大会講演予講集 96 415-415 2009

    Publisher: 日本気象学会

  72. P230 リモートセンシングデータと直接サンプリングデータを用いた、黄砂観測時におけるエアロゾルの特徴

    日比野 真弓, 井上 陽子, 久慈 誠, 早坂 忠裕

    大会講演予講集 95 309-309 2009

    Publisher: 日本気象学会

  73. B202 中国における日射量の長期変動とその要因(その2)(気候システムII)

    早坂 忠裕, 石 広玉, 河本 和明, 村治 能孝

    大会講演予講集 96 131-131 2009

    Publisher: 日本気象学会

  74. 1C1128 Atmospheric aerosols measured at the Observatory of Atmospheric Research in Phimai, Thailand : (I) Characterization of chemical composition(1 Space-5 East Asian scale,General Presentations)

    TSURUTA Haruo, CHOTPITAYASUNON Jinchula, THANA Boossarasiri, KHATRI Pradeep, TAKAMURA Tamio, SUDO Shigeto, YONEMURA Seiichiro, SERA Koichiro, SAITO Yoshihiro, SHIRASUNA Yuichiro, HIRANO Koichiro, HAYASAKA Tadahiro, NAKAJIMA Eiji

    大気環境学会年会講演要旨集 (50) 250-250 2009

    Publisher: 大気環境学会

  75. 1C1140 Atmospheric aerosols measured at the Observatory of Atmospheric Research in Phimai, Thailand : (II) Characterization of optical properties by skyradiometer(1 Space-5 East Asian scale,General Presentations)

    TSURUTA Haruo, CHOTPITAYASUNON Jinchula, THANA Boossarasiri, KHATRI Pradeep, TAKAMURA Tamio, SUDO Shigeto, YONEMURA Seiichiro, SERA Koichiro, SAITO Yoshihiro, SHIRASUNA Yuichiro, HIRANO Koichiro, HAYASAKA Tadahiro, NAKAJIMA Eiji

    大気環境学会年会講演要旨集 (50) 251-251 2009

    Publisher: 大気環境学会

  76. B206 長崎県福江島と沖縄県辺戸岬における春期の大気エアロゾルの化学組成(エアロゾル)

    鶴田 治雄, 須藤 重人, 菊地 信行, 片桐 秀一郎, 世良 耕一郎, 二ツ川 章二, 早坂 忠裕, 中島 映至

    大会講演予講集 94 152-152 2008/10/31

    Publisher: 社団法人日本気象学会

  77. P398 地表面短波放射量変動への気象要素の相対的寄与

    河本 和明, 早坂 忠裕

    大会講演予講集 94 543-543 2008/10/31

    Publisher: 社団法人日本気象学会

  78. 人間活動とエアロゾル (エアロゾルの気候と大気環境への影響)

    早坂 忠裕

    気象研究ノ-ト (218) 159-177 2008/06

    Publisher: 日本気象学会

    ISSN: 0387-5369

  79. B204 リモートセンシングデータと直接サンプリングデータを用いた、黄砂観測時におけるエアロゾルの特徴(エアロゾル)

    日比野 真弓, 久慈 誠, 井上 陽子, 林田 佐智子, 早坂 忠裕

    大会講演予講集 94 150-150 2008

    Publisher: 日本気象学会

  80. D215 中国における日射量の長期変動とその要因(観測手法・放射)

    早坂 忠裕, 石 広玉, 河本 和明, 村治 能孝

    大会講演予講集 94 321-321 2008

    Publisher: 日本気象学会

  81. 1A0930 Chemical composition of atmospheric aerosols in the spring season of 2006 at Fukue in Nagasaki and Cape Hedo in Okinawa(1 Space-5 East Asian scale,General Presentations)

    TSURUTA Haruo, SUDO Shigeto, KIKUCHI Nobuyuki, KATAGIRI Shuichiro, SERA Koichiro, FUTATSUGAWA Shoji, HAYASAKA Tadahiro, NAKAJIMA Eiji

    大気環境学会年会講演要旨集 (49) 205-205 2008

    Publisher: 大気環境学会

  82. Two Line Elementを用いたAVHRRの幾何補正における精度向上(その2)

    松岡真如, 福嶌義宏, 早坂忠裕, 沖大幹, 本多嘉明

    日本写真測量学会学術講演会発表論文集 2007 2007

  83. Two Line Elementを用いたAVHRRの幾何補正における精度向上

    松岡真如, 福嶌義宏, 早坂忠裕, 沖大幹, 本多嘉明

    日本写真測量学会学術講演会発表論文集 2007 2007

  84. P201 化学物質輸送モデルとライダー観測データ解析によって示された東アジア域のエアロゾル鉛直分布の特徴

    佐竹 晋輔, 早坂 忠裕, 清水 厚, 青木 一真, 村治 能孝

    大会講演予講集 91 283-283 2007

    Publisher: 日本気象学会

  85. A351 次世代の静止衛星観測に期待するもの(スペシャルセッション「静止衛星観測II:静止衛星リモートセンシング観測の新展開」)

    早坂 忠裕

    大会講演予講集 92 97-97 2007

    Publisher: 日本気象学会

  86. D217 奄美大島における春期の大気エアロゾルの単一散乱アルベドとその制御要因(エアロゾル)

    鶴田 治雄, 矢吹 正教, 高村 民雄, 早坂 忠裕, 中島 映至

    日本気象学会 大会講演予講集 92 303-303 2007

    Publisher: 日本気象学会

  87. NOAA/AVHRR GACを用いた全球時系列データセットの作成(2.1.1.2 第2プロジェクト共同利用研究の内容と成果,2.1.1.共同利用プロジェクト研究の詳細,2.1.共同利用研究概観,[2] 共同利用研究)

    松岡 真如, 早坂 忠裕

    千葉大学環境リモートセンシング研究センター年報 11 36-38 2006/06

    Publisher: 千葉大学

  88. B207 ABC-EAREX05期間中の奄美大島における大気エアロソルの化学組成と単一散乱アルベド(物質循環II)

    若林 康雄, 鶴田 治雄, 矢吹 正教, 須藤 重人, 米村 正一郎, 白砂 裕一郎, 平野 耕一郎, 世良 耕一郎, 二ツ川 章二, 前田 高尚, 片桐 秀一郎, 早坂 忠裕, 高村 民雄, 中島 映至

    大会講演予講集 89 114-114 2006/04/30

    Publisher: 日本気象学会

  89. 近紫外衛星観測による、秋季日本近海におけるエアロゾルの解析

    久慈 誠, 近藤 優美, 林田 佐智子, 塩原 匡貴, 矢吹 正教, 原 圭一郎, 早坂 忠裕

    日本気象学会 大会講演予講集 89 117-117 2006/04

    Publisher: 日本気象学会

  90. 東アジア域を対象としたAVHRR時系列データセットの作成

    松岡真如, 福嶌義宏, 早坂忠裕, 沖大幹, 本多嘉明

    日本写真測量学会学術講演会発表論文集 2006 2006

  91. A457 エアロゾルの鉛直プロファイルと光学的特性について(雲・エアロゾルの新しい地球環境監視システム,専門分科会)

    早坂 忠裕, 青木 一真, 清水 厚, 村治 能孝

    大会講演予講集 89 90-90 2006

    Publisher: 日本気象学会

  92. A458 SKYNETによるエアロソル・雲・放射観測網の構築(雲・エアロゾルの新しい地球環境監視システム,専門分科会)

    高村 民雄, 中島 映至, 早坂 忠裕, 杉本 伸夫, 内山 明博, 青木 一真

    大会講演予講集 89 91-91 2006

    Publisher: 日本気象学会

  93. P301 ABC-EAREX2005期間中に観測されたCO濃度の上昇

    澤 庸介, 谷本 浩志, 米村 正一郎, 田口 彰一, 松枝 秀和, 早坂 忠裕, 鶴田 治雄, 遠嶋 康徳, 向井 人史, 菊地 信行, 片桐 秀一郎, 和田 晃

    大会講演予講集 89 368-368 2006

    Publisher: 日本気象学会

  94. P307 ライダー観測データ解析による東アジア域のエアロゾルの研究

    久慈 誠, 日比野 真弓, 林田 佐智子, 佐竹 晋輔, 早坂 忠裕

    大会講演予講集 90 355-355 2006

    Publisher: 日本気象学会

  95. Sky-radiometerを用いたエアロゾル光学特性の導出

    保本正芳, 佐野 到, 向井苑生, 早坂忠裕

    理工学総合研究所研究報告 18 67-74 2006

    Publisher: 近畿大学

  96. C109 中国における温室効果気体の観測(物質循環I)

    佐伯 田鶴, 菅原 敏, 青木 周司, 中澤 高清, 石戸谷 重之, Tang Jie, Zhang Dongqi, Shi Guang-Yu, Liu Yu-Zhi, 森本 真司, 早坂 忠裕, 石澤 みさ

    大会講演予講集 88 (0) 170-170 2005/10/31

    Publisher: 社団法人日本気象学会

  97. 中国における温室効果気体の観測

    佐伯田鶴, 菅原敏, 青木周司, 中沢高清, 石戸谷重之, TANG Jie, ZHANG Dongqi, SHI Guang‐Yu, LIU Yu‐Zhi, 森本真司, 早坂忠裕, 石沢みさ

    日本気象学会大会講演予稿集 88 (88) 170-170 2005/10/31

    Publisher: 日本気象学会

  98. 空の色

    早坂忠裕

    まほら (10月) 18-19 2005/10

    Publisher: 旅の文化研究所

  99. 中国における大気中の二酸化炭素とメタンの観測

    菅原敏, 青木周司, 中沢高清, ブツ ケツ, 石広玉, りゅう王芝, 森本真司, 佐伯田鶴, 石沢みさ

    日本気象学会大会講演予稿集 87 (87) 436-436 2005/05/15

    Publisher: 日本気象学会

  100. Land cover classification over the Yellow River domain using satellite data

    Yellow River Studies News Letter = Yellow River Studies News Letter (4) 15-26 2005/04/01

    Publisher: Research Institute for Humanity and Nature(RIHN)

    More details Close

    Land cover classification is implemented in the East Asian region using 250 m MODIS land surface reflectance product in combination with MODIS snow cover product and OLS human settlements product. This classification map is used as one of the input data of hydrological model applied to the Yellow River in China. The classification method is based on the decision tree classification by means of 11 kinds of land surface features derived from time series of two MODIS products and OLS data in 2000. The province based comparison of classification result with Chinese digital land cover map shows the good agreements in forest, agricultural field, grassland and barren categories. Another comparison with Chinese census resulte in the slight overestimations in forest and agricultural field. Agricultural sub-categories as paddy, dry field, and irrigated field shows relatively low agreements in both comparisons.

  101. 寧夏潅がい区における農地面積変化の抽出を目的としたLandsatとAVHRRの相互利用

    松岡真如, 早坂忠裕, 福島義宏, 本多嘉明, 沖大幹

    日本写真測量学会学術講演会発表論文集 2005 2005

  102. 1. はじめに(第1回地球観測衛星研究連絡会の報告)

    早坂 忠裕

    天気 52 (8) 635-636 2005

    ISSN: 0546-0921

  103. P347 2005年4月30日に仙台上空に飛来した大規模黄砂の輸送構造

    佐竹 晋輔, 杉本 伸夫, 鵜野 伊津志, 早坂 忠裕

    大会講演予講集 88 440-440 2005

    Publisher: 日本気象学会

  104. A161 東アジアにおける人為起源エアロゾル間接効果(雲物理)

    河本 和明, 早坂 忠裕, 鵜野 伊津志

    大会講演予講集 88 50-50 2005

    Publisher: 日本気象学会

  105. P431 Atmospheric CO_2 variations in the southernmost part of Japan :

    Zhang Xia, Nakazawa Takakiyo, Aoki Shuji, Nakaoka Shin-ichiro, Ishizawa Misa, Maksyutov Shamil, Sugawara Satoshi, Saeki Tazu, Hayasaka Tadahiro

    87 505-505 2005

    Publisher: 日本気象学会

  106. C164 ABC/EAREX2005観測期間中に得られたエアロゾルの光学的特性(物質循環II)

    青木 一真, 早坂 忠裕, 高村 民雄, 中島 映至, Kim S. W., Sohn B. J.

    大会講演予講集 88 190-190 2005

    Publisher: 日本気象学会

  107. C165 ABC-EAREX05期間中における済州島、福江島、奄美大島での大気エアロソル中のEC/OC濃度(物質循環II)

    鶴田 治雄, 須藤 重人, 米村 正一郎, 白砂 裕一郎, 平野 耕一郎, 世良 耕一郎, 二ツ川 章二, 張 代洲, 前田 高尚, 青木 一真, 菊地 信行, 片桐 秀一郎, 早坂 忠裕, 高村 民雄, 中島 映至

    大会講演予講集 88 191-191 2005

    Publisher: 日本気象学会

  108. 第1回日本・中国・韓国気象学会共催国際シンポジウム報告

    住 明正, 上田 博, 松本 淳, 近藤 豊, 谷本浩志, 早坂忠裕

    天気 52 (11) 845-849 2005

    Publisher: 日本気象学会

    ISSN: 0546-0921

  109. 東アジア域における雲・エアロゾル・日射量の長期変動について

    早坂忠裕

    第15回大気化学シンポジウム講演集 20-23 2005/01

    Publisher: 大気化学研究会

  110. 土地被覆変化の抽出を目的としたPathfinder AVHRR Land Data Setを用いた予備研究

    松岡真如, 早坂忠裕, 福島義宏, 本多嘉明

    日本写真測量学会学術講演会発表論文集 2004 2004

  111. 衛星データによる黄河流域の土地被覆分類

    松岡真如, 早坂忠裕, 福嶋義宏, 本多嘉明

    日本写真測量学会学術講演会発表論文集 2004 2004

  112. A363 アジアモンスーン地域のグリッド日降水データの作成(大規模モンスーン変動,スペシャルセッション「GAMEでアジアモンスーンはどこまでわかったか?」II)

    谷田貝 亜紀代, Xie Pingping, Chen Mingyue, 早坂 忠裕, 福嶌 義宏

    大会講演予講集 86 104-104 2004

    Publisher: 日本気象学会

  113. B312 長崎地方における2004年春季の黄砂現象の特徴(アジアンダスト気候学,スペシャルセッション「アジアンダスト」I)

    荒生 公雄, 石坂 丞二, 早坂 忠裕, 杉本 伸夫, 松井 一郎, 清水 厚, 森 育子, 西川 雅高

    大会講演予講集 86 179-179 2004

    Publisher: 日本気象学会

  114. 2003年度春季大会専門分科会報告

    桑形 恒男, 渡辺 力, 三枝 信子, 浅沼 順, 林 祥介, 岡本 創, 中島 孝, 浅野 正二, 早坂 忠裕, 山元 龍三郎, 花輪 公雄, 加納 裕二, 田中 博, 里村 雄彦, 松本 淳, 平松 信昭

    天気 50 (10) 817-823 2003/10/31

    Publisher: 日本気象学会

    ISSN: 0546-0921

  115. 3.「雲微物理特性と放射収支」(2003年度春季大会専門分科会報告)

    岡本 創, 中島 孝, 浅野 正二, 早坂 忠裕

    天気 50 (10) 819-820 2003/10/31

    Publisher: 社団法人日本気象学会

    ISSN: 0546-0921

  116. GEWEX Radiation Panel Report

    HAYASAKA Tadahiro, IGUCHI Toshio

    50 (1) 51-56 2003

    Publisher: 日本気象学会

    ISSN: 0546-0921

  117. C152 過去20年間の東アジアにおける雲とエアロゾルの変動について(雲微物理特性と放射収支)

    早坂 忠裕, 河本 和明, 中島 映至

    大会講演予講集 83 142-142 2003

    Publisher: 日本気象学会

  118. 東アジア域における雲変動の研究

    河本 和明, 早坂 忠裕, 中島 映至

    大会講演予講集 82 33-33 2002/10/09

  119. 多波長センサーを用いた雲微物理量と雲不均質パラメータの導出

    菊地 信行, 早坂 忠裕

    大会講演予講集 81 331-331 2002/05

  120. 不均質雲の短波放射特性の水平スケール

    早坂 忠裕, 岩渕 弘信

    大会講演予講集 81 190-190 2002/05

  121. Report on IAMAS2001

    SUMI Akimasa, IGUCHI Toshio, HONDA Meiji, NAKAMURA Hisashi, TANAKA Hiroshi.L, YAMAZAKI Takeshi, HAYASAKA Tadahiro, SHIOBARA Masataka, OKAMOTO Hajime, HIGURASHI Akiko, MASUDA Kooiti, MORI Shuichi, HAMADA Jun-Ichi, YOSHIDA Akira, KAWAMURA Kimitaka, SUDO Kengo, KITA Kazuyuki, KANAYA Yugo, KOIKE Makoto, HIO Yasuko, TERAO Yukio, YAMANE Shozo, ARAI Miki

    49 (2) 161-179 2002/02/28

    Publisher: 社団法人日本気象学会

    ISSN: 0546-0921

  122. 衛星で計る雲

    早坂忠裕

    宇宙からみる地球の姿(第16回「大学と科学」公開シンポジウム講演収録集) 136-144 2002

    Publisher: クバプロ

  123. 不均質大気における放射伝達計算手法の開発(その2)

    石田 春磨, 早坂 忠裕

    大会講演予講集 80 308-308 2001/10/10

  124. 不均質大気における放射伝達計算手法の開発

    石田 春磨, 早坂 忠裕

    大会講演予講集 79 315-315 2001/05/08

  125. 可視・近赤外波長の高解像度疑似観測雲画像の作成および三次元放射伝達の効果に関する研究

    岩渕 弘信, 早坂 忠裕

    大会講演予講集 79 319-319 2001/05/08

  126. 多波長多画素データを用いた光学的厚さの高解像度リモートセンシング

    岩渕 弘信, 早坂 忠裕

    大会講演予講集 79 116-116 2001/05/08

  127. 冬季スカンジナビア半島周辺での降水現象と低気圧の特徴

    遊馬 芳雄, 巣山 志津香, 佐藤 淳一, 横山 誠, 菊地 勝弘, 梶川 正弘, 佐藤 昇, 早坂 忠裕

    大会講演予講集 79 126-126 2001/05/08

  128. ノルウェー・ベアーアイランドでのレーダー観測

    遊馬 芳雄, 梶川 正弘, 早坂 忠裕, TANGEN Helge

    大会講演予講集 79 417-417 2001/05/08

  129. 「 揺れ動く21世紀の大学・研究所の将来像 」 概要報告

    山内 恭, 高橋 劭, 住 明正, 平野 仁司, 早坂 忠裕, 笹野 泰弘, 杉 正人, 田中 敏, 中島 映至, 真鍋 淑郎

    天気 48 (2) 119-125 2001/02/28

    Publisher: 日本気象学会

    ISSN: 0546-0921

  130. 「地球温暖化」の問題をめぐって

    早坂忠裕

    学術月報 54 1026-1029 2001

    Publisher: 日本学術振興会

  131. 雲の不均質性が光学的厚さの衛星観測に及ぼす影響-2 : 衛星観測

    岩渕 弘信, 早坂 忠裕

    大会講演予講集 78 278-278 2000/10/18

  132. Bounded Cascade モデルの反射放射特性の現実性についての考察

    岩渕 弘信, 菊地 信行, 早坂 忠裕

    大会講演予講集 78 322-322 2000/10/18

  133. 不均質雲の放射特性を表す Effective Gradient の導入と LANDSAT 衛星高解像度データを用いた光学的厚さの推定

    菊地 信行, 岩渕 弘信, 早坂 忠裕

    大会講演予講集 78 279-279 2000/10/18

  134. 雲の不均質性が光学的厚さの衛星観測に及ぼす影響 : 1 : 数値計算

    岩渕 弘信, 早坂 忠裕, 浅野 正二

    大会講演予講集 77 208-208 2000/05/24

  135. 衛星による雲の微物理特性の観測

    早坂忠裕, 菊地信行

    月刊海洋 32 (5) 291-298 2000/05

    Publisher: 海洋出版

    ISSN: 0916-2011

  136. エアロゾルが層雲の光学的性質に及ぼす影響(その2)

    久芳 奈遠美, 岩渕 弘信, 円山 憲一, 早坂 忠裕, 武田 喬男

    大会講演予講集 76 278-278 1999/11/24

  137. 地上観測から解析した雲の不均質性の地表面放射収支に対する影響

    石田 春磨, 早坂 忠裕, 田中 正之

    大会講演予講集 75 p287 1999/04

  138. エアロゾルが層雲の光学的性質に及ぼす影響

    久芳 奈遠美, 岩渕 弘信, 円山 憲一, 早坂 忠裕, 武田 喬男

    大会講演予講集 75 B107 1999/04

  139. 画素内雲量が雲の光学的厚さと雲粒有効半径の推定に及ぼす影響

    岩渕 弘信, 早坂 忠裕, 田中 正之

    大会講演予講集 75 P286 1999/04

  140. マイクロ波センサーを利用した大気情報抽出に関する研究(2.1.プロジェクト研究)([2]共同利用研究(平成9年度))

    早坂 忠裕, 石田 春磨

    千葉大学環境リモートセンシング研究センター年報 3 21-21 1998/11

    Publisher: 千葉大学

    More details Close

    マイクロ波センサーを利用した大気情報抽出に関する研究(2.1.プロジェクト研究)([2]共同利用研究(平成9年度))

  141. 冬季北極域における雲及び赤外放射の観測

    石田 春磨, 早坂 忠裕, 梶川 正弘, 菊地 勝弘, 上田 博, 遊馬 芳雄, 巣山 志津香

    大会講演予講集 74 D151 1998/10

  142. 太陽放射透過光及びマイクロ波放射の測定に基づく雲物理量推定手法の開発

    石田 春磨, 早坂 忠裕, 田中 正之, 青島 武

    大会講演予講集 73 88-88 1998/05

  143. SSM/Iデータを用いた陸域における降水強度の推定

    田村 英彦, 早坂 忠裕, 田中 正之

    大会講演予講集 73 215-215 1998/05

  144. NOAA/AVHRR赤外3channelを用いた巻雲の物理量解析

    山本 恭子, 早坂 忠裕, 田中 正之, 松井 一郎, 杉本 伸夫

    大会講演予講集 73 322-322 1998/05

  145. 可視と中間赤外2波長のデータを用いた光学的厚さと雲粒有効半径の推定手法の有効性の再検討

    岩渕 弘信, 早坂 忠裕, 田中 正之

    大会講演予講集 73 323-323 1998/05

  146. NOAA AVHRRとGMS VISSRで推定した雲の光学的厚さの比較

    菊地 信行, 早坂 忠裕, 田中 正之

    大会講演予講集 73 324-324 1998/05

  147. STUDIES ON WATER VAPOR, AEROSOL AND SNOW CRYSTALS IN THE ARCTIC (WANTS-ARCTIC; CANADA)

    KIKUCHI Katsuhiro, ASUMA Yoshio, UYEDA Hiroshi, INOUE Yusuke, KAJIKAWA Masahiro, SATO Noboru, SAKURAI Ken-ichi, HAYASAKA Tadahiro

    Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 11 255-255 1997/11

    Publisher: National Institute of Polar Research

    ISSN: 0914-2037

    More details Close

    The WANTS (Water vapor, Aerosol and Nuclei Transportation and Snow crystals) Arctic Experiment was carried out in Inuvik, NWT, Arctic Canada during the mid-winter of 1995/96. Many organizations participated in this research program. A vertical pointing Doppler radar, and microwave radiometer were set up on the roof of the Inuvik Science Research Center, and precipitation and aerosol particle observations by microscope, replica method and filter method were also conducted on the ground surface. Valuable and successive data over 40 days were obtained in the Arctic mid-winter. Two different major vapor routes were classified by synoptic weather analysis. One route was from the Gulf of Alaska across the mountainous region near the west coast of the North American Continent. The other was from the Arctic Ocean or Northern Alaska directly. Precipitation features between them were quite different. In the former the warm air mass was intruded aloft, a convective radar echo was observed and a high amount of liquid water was observed by microwave radiometer. Densely rimed dendrites, small graupel particles, needles and supercooled liquid water droplets were observed on the ground surface. The precipitation intensity was strong, however, the precipitation period was short. The latter was a windy and cold air mass, the radar echo was stratiform and the liquid water path was very small as observed by microwave radiometer. The crystal shapes of combination of bullets, columns and crossed plates type were observed. The precipitation intensity was characterized by weak intensity and long period.

  148. 冬季北極域における積算水蒸気量・雲水量及び赤外放射量の観測

    石田 春磨, 早坂 忠裕, 梶川 正弘, 菊地 勝弘, 上田 博, 遊馬 芳雄, 井上 雄介

    大会講演予講集 72 A105 1997/10

  149. AVHRR/NOAAによる日本付近の低層雲の物理特性の解析

    岩渕 弘信, 早坂 忠裕, 田中 正之

    大会講演予講集 72 C213 1997/10

  150. ランドサット衛星データを用いた不均質雲の光学的厚さと雲粒有効半径の解析

    菊地 信行, 早坂 忠裕, 田中 正之

    大会講演予講集 72 P327 1997/10

  151. Summary of the 12th International Conference on Clouds and Precipitation

    Murakami Masataka, Asuma Yoshio, Kajikawa Masahiro, Orikasa Narihiro, Takahashi Tsuneya, Maki Masayuki, Fujiyoshi Yasushi, Satoh Shinsuke, Wada Makoto, Uyeda Hiroshi, Hayasaka Tadahiro, Endoh Tatsuo, Harimaya Toshio, Katsumata Masaki, Sasaki Akira, Ushiyama Tomoki, Yoshimoto Naohiro

    44 (6) 403-412 1997/06/30

    Publisher: 社団法人日本気象学会

    ISSN: 0546-0921

  152. 黄砂の鉛直輸送過程の3次元トラジェクトリー解析による検証

    泉田 真季, 早坂 忠裕, 田中 正之, 笹野 泰弘

    大会講演予講集 71 326-326 1997/05

  153. 高性能マイクロ波放射計AMSRによる観測について

    柴田 彰, 早坂 忠裕, 青梨 和正, 西尾 文彦, 小池 俊雄, 竹内 義明, 今岡 啓治, 古川 欣司

    大会講演予講集 71 64-64 1997/05

  154. 北極圏における厳冬期の水蒸気, エアロゾル, 雪結晶の研究(WANTS-ARCTIC ; Canada)その7 - : 厳冬期におけるカナダ北極圏での降雪粒子の形成と水輸送について-

    井上 雄介, 遊馬 芳雄, 菊地 勝弘, 上田 博, 梶川 正弘, 佐藤 昇, 桜井 兼市, 早坂 忠裕

    大会講演予講集 71 335-335 1997/05

  155. 西太平洋における台風の水収支に関する研究

    井元 修司, 早坂 忠裕, 田中 正之

    大会講演予講集 71 66-66 1997/05

  156. マイクロ波放射計観測に基づく積算水蒸気量・雲水量の推定とその変動の観測

    石田 春磨, 早坂 忠裕, 田中 正之, 高村 民雄

    大会講演予講集 71 347-347 1997/05

  157. マイクロ波3周波を利用した地上ベースでの可降水量・雲水量の推定

    滝本 訓久, 高村 民雄, 早坂 忠裕, 石田 春磨

    大会講演予講集 70 92-92 1996/11/06

  158. 北極圏における厳冬期の水蒸気、エアロゾル、雪結晶の研究(WANTS-ARCTIC ; Canada) : その6-厳冬期におけるカナダ北極圏での霰形成の水収支について-

    井上 雄介, 遊馬 芳雄, 菊地 勝弘, 上田 博, 梶川 正弘, 佐藤 昇, 桜井 兼市, 早坂 忠裕

    大会講演予講集 70 172-172 1996/11/06

  159. 雲の不均質性がNOAA AVHRRのCh1とCh3による反射光強度観測へ及ぼす影響のシミュレーション

    菊地 信行, 早坂 忠裕, 田中 正之

    大会講演予講集 70 84-84 1996/11/06

  160. 1.1.16.水蒸気量,雲水量の高度分布測定(1.1センサ/大気放射研究部門)([1]研究活動)

    高村 民雄, 早坂 忠裕, 滝本 訓久

    千葉大学環境リモートセンシング研究センター年報 1 5-5 1996/09

    Publisher: 千葉大学

  161. マイクロ波放射観測による大気中の水蒸気量及び雲水量の推定(2.1.プロジェクト研究)([2]共同利用)

    早坂 忠裕

    千葉大学環境リモートセンシング研究センター年報 1 21-21 1996/09

    Publisher: 千葉大学

    More details Close

    マイクロ波放射観測による大気中の水蒸気量及び雲水量の推定(2.1.プロジェクト研究)([2]共同利用)

  162. マイクロ波放射計リモ-トセンシングの原理 (地球環境のマイクロ波放射計リモ-トセンシング)

    早坂 忠裕

    気象研究ノ-ト (187) 9-21 1996/08

    Publisher: 日本気象学会

    ISSN: 0387-5369

  163. 水蒸気および雲のマイクロ波放射計リモ-トセンシング (地球環境のマイクロ波放射計リモ-トセンシング)

    早坂 忠裕

    気象研究ノ-ト (187) 65-76 1996/08

    Publisher: 日本気象学会

    ISSN: 0387-5369

  164. ヤマセ雲の物理的特性の衛星リモートセンシング

    佐藤 由理, 早坂 忠裕, 田中 正之, 久慈 誠

    大会講演予講集 69 89-89 1996/05/21

  165. 北極圏における厳冬期の水蒸気、エアロゾル、雪結晶の研究(WANTS-ARCTIC) : その1 -研究の概要-

    菊地 勝弘, 遊馬 芳雄, 上田 博, 井上 雄介, 梶川 正弘, 佐藤 昇, 桜井 兼市, 早坂 忠裕

    大会講演予講集 69 95-95 1996/05/21

  166. Report of the Second International Study Conference on GEWEX in Asia and GAME (March 6-10, Pattaya, Thailand)

    Yasunari Tetsuzo, Iwasaki Toshiki, Koike Toshio, Suzuki Masakazu, Hayasaka Tadahiro, Fukushima Yoshihiro

    43 (1) 49-55 1996/01/31

    Publisher: 社団法人日本気象学会

    ISSN: 0546-0921

  167. 空気の密度が生むマジック

    早坂忠裕

    AERA Mook、気象学のみかた 126-129 1996

    Publisher: 朝日新聞社

  168. 隕石説、火山噴火説をめぐって

    早坂忠裕

    AERA Mook、気象学のみかた 118-121 1996

    Publisher: 朝日新聞社

  169. 大気は太陽放射をどれだけ吸収するのか?

    早坂忠裕

    天気 42 (11) 789-797 1995/11/30

    Publisher: 日本気象学会

    ISSN: 0546-0921

  170. NOAA/AVHRR 赤外データを用いた熱帯の巻雲物理量の解析

    早坂 忠裕, 桑原 記代, 田中 正之, 中島 映至

    大会講演予講集 68 22-22 1995/10/16

  171. An Extra-Report of the Second International Study Conference on GEWEX in Asia and GAME

    JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES 8 (5) 517-523 1995/09/05

    Publisher: THE JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES

    DOI: 10.3178/jjshwr.8.517  

    ISSN: 0915-1389

  172. マイクロ波放射計(衛星搭載の放射計による観測に関連して)

    早坂 忠裕

    天気 42 (7) 437-438 1995/07/31

    Publisher: 社団法人日本気象学会

    ISSN: 0546-0921

  173. 航空機観測における赤外放射フラックスの測定精度について

    早坂 忠裕, 菊地 信行, 塩原 匡貴, 藤吉 康志

    大会講演予講集 67 238-238 1995/05/15

  174. SSM/Iデータを用いた熱帯クラウドクラスターの構造の解明

    滝沢 巌, 早坂 忠裕, 田中 正之

    大会講演予講集 67 169-169 1995/05/15

  175. 不均質な雲による太陽放射の反射の観測とシミュレーション

    菊地 信行, 早坂 忠裕, 田中 正之

    大会講演予講集 67 239-239 1995/05/15

  176. 3.雲の衛星リモートセンシング(1993年度日本気象学会秋季大会シンポジウム「大気・陸面過程と衛星リモートセンシング」の報告)

    早坂 忠裕

    天気 42 (4) 213-218 1995/04/30

    Publisher: 社団法人日本気象学会

    ISSN: 0546-0921

  177. TOGA-COAREにおけるNASAの航空機観測

    早坂忠裕

    天気 40 (8) 549-553 1993/08/31

    Publisher: 日本気象学会

    ISSN: 0546-0921

  178. Summary of the 11th International Conference on Clouds and Precipitation

    Murakami Masataka, Kajikawa Masahiro, Asuma Yoshio, Takaya Yoshimasa, Yamada Yoshinori, Harimaya Toshio, Hayasaka Tadahiro, Uyeda Hiroshi, Wada Makoto, Satoh Shinsuke, Takahashi Nobuhiro

    40 (4) 279-286 1993/04/30

    Publisher: 社団法人日本気象学会

    ISSN: 0546-0921

  179. 大気汚染の衛星リモートセンシング

    早坂忠裕

    大気汚染学会誌 28 (6) A128-A135 1993

    Publisher: Japan Society for Atmospheric Environment

    DOI: 10.11298/taiki1978.28.6_A128  

    ISSN: 0386-7064

  180. Structure and reflectance of winter maritime stratocumulus clouds

    Katsuhiro Kikuchi, Yoshio Asuma, Takashi Taniguchi, Masato Kanno, Masayuki Tanaka, Tadahiro Hayasaka, Takao Takeda, Yasushi Fujiyoshi

    Journal of the Meteorological Society of Japan 71 (6) 715-731 1993

    Publisher: Meteorological Society of Japan

    DOI: 10.2151/jmsj1965.71.6_715  

    ISSN: 0026-1165

  181. 東北大学大気海洋変動観測研究センタ-(研究機関めぐり)

    中沢 高清, 川村 宏, 早坂 忠裕

    天気 38 (12) p785-787 1991/12

    Publisher: 日本気象学会

    ISSN: 0546-0921

  182. 宇宙からみた東北の自然(II)−東北上空の煙と沿海州の森 林火災−

    早坂忠裕, 川村 宏

    SENAC, Tohoku Univ. 22 19-21 1989

Show all ︎Show first 5

Books and Other Publications 13

  1. リモートセンシング事典

    早坂忠裕

    丸善出版 2022/12

  2. Remote Sensing of the Atmosphere, Clouds, and Precipitation IV, Proceedings of SPIE, Vol. 8523

    Hayasaka, T, K. Nakamura, E. Im

    2013/02

  3. 気象研究ノート223号「気象・気候学のための最新放射計算技術とその応用」

    早坂忠裕, 岩渕弘信

    日本気象学会 2011/10/27

    ISBN: 9784904129067

  4. 地球環境学事典

    総合地球環境学研

    弘文堂 2010/10/30

  5. 気象研究ノート218号「エアロゾルの気候と大気環境への影響」

    中島映至, 早坂忠裕

    日本気象学会 2008/06/30

  6. メコンと黄河−研究者の熱い思い−

    竹内邦良, 福嶌義宏

    2007/03

  7. エアロゾルの大気環境影響

    笠原三紀夫, 野達

    京都大学学術出版会 2007/02/20

  8. 気象ハンドブック(第3版)

    新田尚, 野瀬純一, 伊藤朋之, 住明正

    朝倉書店 2005/09/20

  9. エアロゾル用語集

    日本エアロゾル学会

    京都大学学術出版会 2004/08/05

  10. 対流圏大気の化学と地球環境

    秋元肇, 河村公隆, 中澤高清, 鷲田伸明

    学会出版センター 2001/04/01

  11. Optical Remote Sensing of the Atmosphere and Clouds II, Proceedings of SPIE, Vol. 4150

    Sasano, Y, J. Wang, T, Hayasaka

    2001

  12. Microwave Remote Sensing of the Atmosphere and Environment, Proceedings of SPIE, Volume 3503

    Hayasaka, T, D. L. Wu, Y.-Q. Jin, J.-S. Jiang

    1998

  13. 気象研究ノート187号「地球環境のマイクロ波放射計リモートセンシング」

    早坂忠裕

    日本気象学会 1996/08/10

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Presentations 47

  1. Decreasing Trend and Hemispheric Symmetry of Earth's Albedo - A Brief Review - Invited

    2023/07/04

  2. Space-based Climate Monitoring and Application Studies in Japan Invited

    Tadahiro HAYASAKA

    Asia Oceania Meteorological Satellite User Conference 2021/11/04

  3. Contribution of JAXA’s Earth Observation Missions to Climate Studies Invited

    Tadahiro HAYASAKA

    JAXA-NASA Cooperation in Addressing the Climate Challenge 2021/07/21

  4. JAXA EO Program Invited

    Tadahiro HAYASAKA

    IGARSS 2021 2021/07/16

  5. 地球温暖化と日本の気候 − 気象災害は増加するか?− Invited

    早坂 忠裕

    東北経営者協会 2021/07/12

  6. Satellite Observations for the Science and Impact of Global Warming Invited

    Tadahiro HAYASAKA

    JAXA Joint PI Meeting 2021/01/18

  7. 地球温暖化と日本の気候 Invited

    早坂忠裕

    日本気象学会東北支部2020年度気象講演会 2020/12/12

  8. 気象災害と衛星観測

    防災推進国民大会・日本学術会議公開シンポジウム・第4回防災学術連携シンポジウム 2017/11/26

  9. 夏季北太平洋における下層雲と海面水温

    高橋直也, 須賀利雄, 山口凌平

    2017年度日本海洋学会秋季大会 2017/10/14

  10. Cloud Object解析手法を用いた熱帯域の雲特性と環境場の関係の解明

    高橋直也

    日本気象学会2016年度秋季大会 2016/10/26

  11. Vertical Profile of Cloud and Radiation Budget Observed by Satellite

    Hayasaka T, A. Mitsui, N. Takahashi

    日本地球惑星科学連合大会2016 2016/05/22

  12. 東西熱帯太平洋における降水と雲物理特性の関係

    高橋直也

    日本気象学会2016年度春季大会 2016/05/18

  13. 太平洋北西部における大気エアロゾルの種類と鉛直分布

    村上樹

    日本気象学会2016年度春季大会 2016/05/18

  14. The Evolution of Microphysical Properties of Topical Mesoscale Convective Systems International-presentation

    Nurfiena Sagita Putri

    International Radiation Symposium 2016 2016/04/16

  15. Cloud microphysical properties in tropical Pacific regions derived from CloudSat and CALIPSO International-presentation

    Naoya Takahashi, Hajime Okamoto

    International Radiation Symposium 2016 2016/04/16

  16. 海洋上の下層雲の物理特性

    丸山拓海, 河本和明

    2013年度日本海洋学会秋季大会 2013/09/17

  17. The importance of Asian dust aerosols as CCN estimated from satellite data analysis International-presentation

    International Radiation Symposium 2012 2012/08/06

  18. 雲・放射エネルギーを介したモンスーンアジアの大気海洋相互作用

    日本気象学会2011年度秋季大会 2011/11/16

  19. Indirect and Semi-direct effects of Dust Aerosols on the East Asian Clouds International-presentation

    Tetsuhiko Saito

    The Fifth Korea-Japan-China Joint Conference on Meteorology 2011/10/24

  20. Air-Sea Interaction in Monsoon Asia Through Cloud and Radiation Processes International-presentation

    The Fifth Korea-Japan-China Joint Conference on Meteorology 2011/10/24

  21. Shortwave radiation and cloud properties in China International-presentation

    Hayasaka, T, G.-Y. Shi, K. Kawamoto

    The 3rd Asia Pacific Radiation Symposium 2010/08/25

  22. 中国における日射量の長期変動とその要因(2)

    日本気象学会2009年度秋季大会 2009/11/25

  23. Satellite and Ground-Based Measurements of Aerosol and Cloud in East Asia International-presentation

    OSA Optics & Photonics Congress, HISE 2009/04/26

  24. Relative contributions of aerosol and cloud to the surface shortwave irradiance change in East Asia International-presentation

    K. Kawamoto

    Europian Geosciences Union General Assembly 2009 2009/04/19

  25. 中国における日射量の長期変動とその要因

    日本気象学会2008年度秋季大会 2008/11/19

  26. 宇宙から見るエアロゾル・雲の特徴と地球温暖化問題

    大気環境学会・北海道東北支部第15回学術集会 2008/11/07

  27. Shortwave Absorption Properties of Atmosphere over China International-presentation

    International Radiation Symposium 2008 2008/08/03

  28. 次世代の静止衛星観測に期待するもの

    日本気象学会2007年度秋季大会 2007/10/16

  29. Changes in Aerosols and Shortwave Irradiance over China, 1960-2000 International-presentation

    AOGS 2007/07/31

  30. Potential Radiative Forcings to the Surface Shortwave Radiation International-presentation

    IUGG General Assembly 2007/07/05

  31. Potential radiative forcings to the surface shortwave irradiance over China International-presentation

    ESSP Open Science Conference 2006/11/09

  32. Changes in water cycle in human-nature system over East Asia International-presentation

    RIHN 1st International Symposium “Water and better human life in the future” 2006/11/07

  33. Potential radiative forcings to the surface shortwave irradiance over China International-presentation

    2nd Asia-Pacific Radiation Symposium 2006/07/31

  34. Long-term analyses of surface shortwave irradiance, clouds, and aerosols over China (pyranometer 1960-2000) International-presentation

    Meeting of GEWEX Cloud Assessment 2006/07/06

  35. Quality control and long-term variation of surface shortwave radiation in China International-presentation

    Baseline Surface Radiation Network, 9th Science and Review Workshop 2006/05/29

  36. Long-term trends of surface shortwave irradiance, aerosols, and cloud in East Asia

    日本国際賞学術懇談会 2006/04/19

  37. Comparison of radiative flux measurements during EAREX2005 Gosan Campaign International-presentation

    2nd ABC-EAREX’05 Workshop 2005/10/25

  38. Aerosol effects on the surface shortwave radiation in China International-presentation

    International Symposium on Atmospheric Environmental Impacts of Aerosols in East Asia 2005/09/19

  39. Vertical profile and size distribution of aerosols observed by lidar and skyradiometer in Japan for 2003-2004 International-presentation

    IAMAS2005 2005/08/02

  40. Observations of aerosols and radiation in Fukue island, Japan International-presentation

    ABC-EAREX’05 Workshop 2005/06/29

  41. Long-term Variation of Surface Shortwave Radiation in East Asia International-presentation

    第1回日中韓大気科学国際シンポジウム 2005/05/15

  42. 日本における放射観測について報告 International-presentation

    UNEP ABC Science Team Meeting 2005/04/04

  43. 東アジアにおける雲・エアロゾル・日射量の長期変動について

    第15回大気化学シンポジウム 2005/01/05

  44. Evaluation of long-term surface shortwave radiation data in China International-presentation

    GEWEX Radiation Panel Meeting 2004/10/18

  45. Aerosol and radiation measurements for ABC in Japan International-presentation

    International Workshop for the ABC Gosan Campaign 2004/09/20

  46. Long-term and seasonal variations of shortwave radiation over China International-presentation

    International Radiation Symposium 2004 2004/08/23

  47. 福江島におけるエアロゾル・放射観測

    APEX&ACECAP Workshop 2004/06/23

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Research Projects 29

  1. 雲・エアロゾルの変動とその気候への影響に関する研究 Competitive

    System: The Other Research Programs

    1982/04 - Present

  2. Quantification of biological and chemical compositions of Asian dust and its impacts on atmospheric radiation transfer

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Prefectural University of Kumamoto

    2021/04/01 - 2025/03/31

  3. Quantification of biological and chemical compositions of Asian dust and its impacts on atmospheric radiation transfer

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Prefectural University of Kumamoto

    2021/04/01 - 2025/03/31

  4. Physiochemical and Optical Variations of Long-distance Transported Haze Particles over the East Asia

    Daizhou Zhang

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Prefectural University of Kumamoto

    2016/04/01 - 2020/03/31

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    The changes of the shape, composition, surface coating and optical properties of haze and dust particles which originated from the inland urban and desert areas in the Asian continent and dispersed widely within the continent and down to Kyushu areas were quantitatively studied. As dispersing within the continent, the scattering coefficient of the particles substantially increased while the absorption coefficients decreased a little. In contrast, the particles being transported to the western coast of Kyushu usually turned into aggregated shapes in core-shell structures with thick liquid coatings, and their ability of absorbing and backscattering solar radiation energy increased during the trans-boundary movement. By the comparison of the particles observed in the continent and at the western coast of Kyushu, the increases were quantitatively evaluated and the mechanisms responsible for the increases were addressed.

  5. A study on the interaction among multi-layer cloud, radiation, precipitation, and ocean mixed layer

    Hayasaka Tadahiro

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2016/04/01 - 2019/03/31

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    A comprehensive analysis was performed using various satellite observation data, reanalysis data, ship observation data, and Argo float observation data. In addition, the simulation of the relationship between sea surface temperature and clouds was performed using the regional meteorological model WRF. As a result, it was shown that the low clouds in the summer North Pacific, which have been analyzed from relatively simple viewpoints such as sea surface temperature and atmospheric stability, have different fine structures in the western and central regions. In the western part of the North Pacific Ocean, the Kuroshio and Kuroshio Extension are dominant, and cloud fluctuations have little effect on the sea. On the other hand, in the central part of the North Pacific Ocean, it is suggested that the ocean mixing layer is shallow and the sea surface temperature affects the clouds, but the fluctuation of the clouds also influences the ocean mixing layer.

  6. Study on physical and optical properties of cirrus cloud using satellite-based imager

    Iwabuchi Hironobu, HAYASAKA Tadahiro, OKAMOTO Hajime, KATAGIRI Shuichiro

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2013/04/01 - 2017/03/31

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    In order to capture the spatial and temporal variations of the upper clouds, which play important roles in determining the radiation balance of the earth, we have developed methods to retrieve the upper cloud properties from the satellite data. Variations of cloud amount and optical and microphysical properties were investigated. In the tropics, distribution of the optically thick upper cloud is well associated with areas of high convective activity. The distribution of the cirrus cloud spreads to the higher latitudes than that of the convective cloud, and the cirrus cloud distribution also fluctuated corresponding to the seasonal cycle of the convective activity. The interannual variation of the upper cloud is closely related to the ENSO. In addition, we developed a cloud analysis algorithm using the Himawari-8 data, and it became possible to capture the temporal variation of clouds with frequent observation of the Himawari-8.

  7. Promotion and Supervision of the "Hot Spot Project" on the Extratropical Ocean-Atmosphere Coupled System

    NAKAMURA HISASHI, ISOBE Atsuhiko, TACHIBANA Yoshihiro, HAYASAKA Tadahiro, KAWAMURA Ryuichi, MINOBE Shoshiro, MITSUDERA Humio, NONAKA Masami, KAWAI Yoshimi, YOSHIDA Akira

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Institution: The University of Tokyo

    2010/04/01 - 2016/03/31

  8. Air-Sea Interaction in Monsoon Asia through Cloud and Radiation Processes

    HAYASAKA Tadahiro, KAWAMOTO Kazuaki, MURAYAMA Toshiyuki, EGUCHI Nawo, IWASAKI Toshiki, TSUBOKI Kazuhisa, IWABUCHI Hironobu, OKAMOTO Hajime

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Institution: Tohoku University

    2010/04/01 - 2015/03/31

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    A relationship between micro and macro physical properties of cloud and heat flux at the sea surface was studied by using satellite observation data, ship-borne observation data, surface observation data, and numerical simulation with a cloud-resolving model. The results show that condensation process is dominant in the growth of cloud droplet over the area where heat flux at the sea surface is large, while collision process is important for the droplet growth in the other area. It was shown from the space-borne lidar and cloud-radar that overlapping clouds suppress the underlying low level cloud development.

  9. A study on the diurnal variation of low cloud microphysical properties

    HAYASAKA Tadahiro, KAWAMOTO Kazuaki, YATAGAI Akiyo, KUBA Naomi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Research Institute for Humanity and Nature

    2004 - 2006

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    The cloud is one of the most important factors controlling the Earth's climate change. The low level cloud has a large reflectance and is affected by anthropogenic aerosols, that is, the indirect effect. However, the basic properties of low cloud is not sufficiently investigated. The intent of the present study is to investigate the mechanism of diurnal variation of low cloud microphysical properties. We used satellite data such as GOES and NOAA/AVHRR. The stratiform low clouds off the coast of California were investigated by using GOES data. The reflection property of the cloud was used to estimate optical thickness and effective particle radius of cloud. It is found that cloud optical thickness decreased from morning to afternoon while effective particle radius increased during the same period and then decreased. The variation of optical thickness may ascribed to heating due to absorption of solar radiation. On the other hand, effective particle radius might change as a result of condensation, evaporation, coagulation, and gravitational fall out. It should be noted that the properties observed here is limited to cloud top because we used the reflected solar radiation in visible and near infrared spectral region. In addition, NOAA/AVHRR data were used. The NOAA is polar orbital satellite, but diurnal variation can be observed because the orbit of NOAA satellite drifts and then equator overpass time slightly delay. It is also shown from the analysis of NOAA/AVHRR data that effective particle radius of low cloud decreased from noon to evening. This is consistent with the result obtained from the above GOES data analysis and ground based measurements with microwave radiometer and pyranometer carried out by other research group. There are several different mechanisms of cloud forming, maintaining and disappearing, so that we need further studies involving satellite remote sensing, ground based observation, and meso-scale modeling with cloud microphysical processes.

  10. CLOUD-AEROSOL INTERACTION AND ITS INFLUENCES ON THE SURFACE RADIATION BUDGETS IN EAST ASIA.

    HAYASAKA Tadahiro, KUJI Makoto, KAWAMOTO Kazuaki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research on Priority Areas

    Institution: RESEARCH INSTITUTE FOR HUMANITY AND NATURE

    2004 - 2005

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    In the present study, the comparison and analysis of surface shortwave irradiance over China were carried out by using pyranometer data, satellite-derived data, and parameterized data with meteorological factors. The new quality control method was developed to check the pyranometer data obtained for the past several decades. The application of the quality control method showed that the pyranometer data used in this study, which were obtained by the Chinese Meteorological Administration, were reliable for long-term trend analysis. The comparison of the pyranometer data with the satellite-derived data such as ISCCP-FD and GEWEX-SRB indicated systematic bias particularly in the urban and desert areas. It is suggested from radiative transfer calculations that the bias is ascribed to aerosols in the satellite-derived data even under the cloudy sky conditions. The surface shortwave irradiance pyranometer data analysis suggested a decreasing trend for the period 1960-1990. The decreasing trend may be ascribed to changes in optical thickness of aerosols and that of clouds while the cloud amount was decreasing in this period. It is also suggested that the surface shortwave irradiance appears to change from decrease to increase around 1990. It is consistent with the previous studies for the North America and Europe, that is, so-called "global dimming and brightening" phenomena. The study on this matter will be more important in the future climate studies.

  11. 大気エアロゾルの地球冷却化効果-研究調整

    太田 幸雄, 塩原 匡貴, 北田 敏廣, 今須 良一, 向井 苑生, 早坂 忠裕

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特定領域研究

    Institution: 北海道大学

    2002 - 2005

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    本年度は、観測・計算を継続すると共に、これまでの結果を含めたまとめを行い、以下の結果を得た。(1)観測船「しらせ」により日本周辺海域での光学特性観測を行い、太平洋遠方海域からのエアロゾルでは単一散乱アルベドは0.98以上、大陸内部に起源を持ちその後沿岸部を通過中に汚染されたエアロゾルでは0.94〜0.98、中国東北部を通過後日本南岸に到達したエアロゾルでは0.85〜0.94の値を得た。また小笠原父島において光学特性の経年観測を行い、春〜秋には単一散乱アルベドは0.98以上であるが、1月には0.91程度にまで下がることを見出した。(2)ADEOS/POLDERの偏光輝度データ解析から1997年と2003年の4〜6月の光学的厚さの分布を求めた。その結果、東アジア域およびアフリカ中南部域にエアロゾルの高濃度域が存在していることを明らかにした。(3)中国大陸における日射観測結果の解析から、1960〜1990年までの大気エアロゾルの光学的厚さの変動を求めた。1980年過ぎまでは中国全体で増加傾向がみられるが、その後1980年代後半からはあまり大きな変化は見られない。さらに中国における1961〜2000年までの日射量の長期変動を調べ、1961年から1990年までは中国のほぼ全域で日射量が減少しているが、その後増加に転じていることを見出した。(4)鉱山の立坑を用い、立坑の底部から硫酸エアロゾルあるいはNaClエアロゾルを注入し、立坑内を上昇する気流による雲粒生成実験を行い、実規模での雲粒生成能について検討した。その結果、注入したエアロソル数(雲核数)の増加に伴い、生成される雲粒数が増加する結果が得られた。(5)これまでに観測されたエアロソルの光学・化学特性値、衛星観測から得られた光学的厚さの広域分布および新たに作成された土壌粒子の地表面からの巻き上げによるフラックス評価式などを大気大循環モデルに導入し、エアロゾル各成分からの寄与を総計した4月の月平均の放射強制力の分布を算出した。その結果、放射強制力の値は、中国の南部海岸域において大きな負の値を持ち、2000年には上海付近において-50W/m-2という強制力を示していること、また、2000年から2021年にかけての放射強制力の変化は、black carbonの変化パターンを特に反映して、中国北部から日本にかけて大気を冷却する効果(より負の放射強制力が強まる傾向)が大きくなるが、一方、上海付近の南部においては放射強制力の変化量は-2〜0W/m-2と、ほとんど変化が見られていないという結果が得られた。これは、東アジア地域全体での平均値のみで気候影響を議論するのではなく、この領域内においても、地域ごとに影響の評価を行う必要であることを示唆している。

  12. 大気汚染と気候・降水・植生系間の大陸スケール相互作用に関する調査研究

    中島 映至, 高橋 正明, 近藤 豊, 河村 公隆, 北 和之, 早坂 忠裕

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(C)

    Institution: 東京大学

    2004 - 2004

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    大気汚染が引き起こす気候影響調査の諸要件を調査した結果、次のことが明らかになった。(1)大気汚染ガスからのエアロソル形成過程の中で有機エアロゾルに関する過程について研究が不足している。エアロゾルの光学的特性のモデル結果は未だに観測と大きな違いがある。(2)これらの過程をアジア域において観測するために、UNEP/ABC、JAXA/SKYNET、NASA/AERONET、GEWEX/BSRN等を組み合わせることが有効である。(3)雲レーダーとライダーを組み合わせた新しい観測システム、MIDORI/GLIやEOS/MODISなどの新しい衛星イメジャーが、エアロゾルと雲のモデリングの問題点を調査するために効果的である。(4)アジア域に存在する放射収支データ、日照時間データ、視程データによると20年間のデータには経年的な変化が含まれており、モデル結果との比較がモデルの検証にとって重要である。(5)大気大循環モデルを利用した共生プロジェクトの20世紀再現実験結果や新たに実施した計算結果によって、気候形成にはエアロゾルの影響が大きいことが明らかになったが、雲場、放射強制力、降雨場についてはモデルのパラメタリゼーションに強く依存することがわかった。 以上の検討によって、エアロゾルの気候影響を調査し、モデル化する本格的な調査が必要なことが明らかになった。諸過程のモデリングの改良のためには、散在する過去のデータや衛星データの収集と解析、現存する観測ネットワークの有機的結合と観測が有効である。モデリングに関しては、有機エアロゾル、エアロゾルと雲の相互作用過程、降雨過程、降雨と日射量の植生への影響過程のモデル化の構図が得られた。これらの調査の過程で、UNEP/ABC(国連環境計画/褐色大気雲プロジェクト)の観測計画を立てることができ、国際貢献を行った。

  13. Studies on the Water Vapor Transportation, Precipitation and Atmospheric Disturbances over the Norwegian Sea Regions Affecting the Climate in the Northern Hemisphere

    KIKUCHI Katsuhiro, ASUMA Yoshio, HAYASAKA Tadahiro, KAJIKAWA Masahiro, WADA Makoto, SATO Noboru

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Akita Prefectural University

    2001 - 2004

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    It is well known that the Norwegian Sea region is very important to understand the energy and water vapor transformation in the northern hemisphere because the Norwegian Sea does not freeze in the midwinter seasons. Therefore, the baroclinic zone is formed among a warm air-mass which is originated in the mid-latitude and a cold air-mass which is originated in a high latitude region. Under such conditions, the polar lows are generated around the zone frequently. To investigate the structures, activity and precipitation phenomena of the atmospheric disturbances, the X-band vertically pointing Doppler radar of the Graduate School of Science, Hokkaido University was set up at the Bear Island (Bjornoya) Weather Observatory in Norway (74°30′N, 19°01′E). Continuous observations had been conducted through three years from September 2001 to August 2004. The radar observations in this region is the first time till the present. To estimate the spatial distribution of precipitation intensity from the radar data obtained, the relationship between radar reflectivity (Z) and precipitation intensity (R), and precipitation intensity (R) and falling velocity of precipitation particles (V_p) were investigated. As a result, the actual circumstances of the precipitation intensity and water contents over the Norwegian Sea region were clarified. Furthermore, the radar data which was obtained at Ny-Alesund station (78°55′N, 20°25′E) in the Svalbard, Norway, of National Institute of Polar Research of Japan, was analyzed. As a result, the radar echoes showed distinct seasonal variations with respect to height, and clarified into four patterns. The observations of snow crystals and aerosol particles were conducted through four winter seasons at the Arctic Research Center, Sodankyla, Finland, and a number of interesting results were obtained. The densification phenomena and compressive viscosity of the depth of snow cover at the Arctic regions were investigated and compared with the temperate regions.

  14. 東アジア域の雲・エアロゾル相互作用の解明とその放射収支への影響に関する研究

    早坂 忠裕, 河本 和明, 久慈 誠

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特定領域研究

    Institution: 総合地球環境学研究所

    2002 - 2003

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    まず、東アジアにおける過去20年間のエアロゾルの変質を鮮明するために、文献の収集とレビューを行った。それによると、気候研究のためのエアロゾルの長期モニタリングには、エアロゾルの光学的厚さのデータが適していることがわかった。その値は、成都や重慶などの内陸の重工業都市や沿岸部で大きく、また、経年変化については、Luo et al.3)の1960〜1990年の解析結果からは、1980年過ぎまでは中国全体で増加傾向にあったが、その後1980年代はあまり変化していないように見えることが明らかとなった。 次に東アジア域の雲の光学的厚さと雲粒有効半径について、AVHRRデータを用いて解析した。その結果、次のようなことが見いだされた。中国大陸上の水雲は過去20年間に、光学的厚さはあまり変化していないが雲粒有効半径は減少する傾向にある。また、光学的厚さの空間分布は、北部よりも南部の方が大きいが、これは対象とする雲を雲頂温度273K以上で選別したためと考えられる。雲粒有効半径は海域で大きく陸域で小さくなる傾向がある。 さらに、人為起源エアロゾルの影響を調べるために、SO2の年間排出量と雲の光学的厚さ、雲粒有効半径、雲粒数濃度の年平均値の関係を調べた。それによると、SO2の排出量が多い場所では雲粒有効半径が小さいことが示唆された。また、1985年と1995年を比較すると、光学的厚さに関しては大きな違いは見られなかったが、雲粒有効半径では後者の方が領域平均で1μm程度小さく、雲粒数密度は増加するという結果が得られた。これは、SO2排出量全体が増加しているために、硫酸塩エアロゾル濃度が高くなり、その結果雲凝結核が増加して小さな雲粒の濃度が多くなったものと思われる。本研究では対象領域のエアロゾルを直接観測していないので、これらの因果関係については推測の部分も若干含まれるが、全般的には、いわゆるエアロゾルの間接効果を示唆するものと考えられる。

  15. Development of high accuracy satellite renmote sensing of cloud and its application to climate studies

    HAYASAKA Tdahiro, SHIOBARA Masataka, YAMANOUCHI Takashi, IWASAKI Toshiki, ASUMA Yoshio, TAKAMURA Tamio

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    1999 - 2001

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    In the present study, ground based measurements of cloud were carried out to evaluate the accuracy of satellite remote sensing of cloud microphysics and radiative properties. Comparisons among the ground based measurements, aircraft measurement data obtained in the past, and satellite remote sensing were also performed. Radiaitve properties of inhomogeneous cloud were simulated with Monte Carlo method to evaluate the retrieval of loud microphysical properties such as optical thickness and effective particle radius. Application of satellite remote sensing to GCM was also discussed. It is suggested that optical thickness and effective particle radius retrieved from satellite remote sensing are consistent with those measured in situ by aircraft. Accuracy of remote sensing of inhomogeneous cloud is worse than that of homogeneous cloud because of roughening and smoothing effects, which are dependent on the geometrical relationship between the sun and satellite. Statistical approach in the comparison of observed results obtained by different methods is quite effective particularly for the large size of data, and it is applicable to parameterization of cloud in GCM.

  16. Climate and Water Cycle Modelling

    SUMI Akimasa, TAKAYABU Izuru, SATOMURA Takehiko, KITOH Akio, HAYASAKA Tadahiro, XUESHUN Shen

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research on Priority Areas (B)

    Institution: The University of Tokyo

    1999 - 2001

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    In this project, various aspects of atmosphere-land interaction have been investigated. As the one-dimensional study, observed fluxes are compared with fluxes given by several models. As there exists biases in the observation, definite conclusion cannot be obtained. It may be difficult that this kind of comparison gives us a definite conclusion to the GCM. As the meso-scale model study, diurnal variation of precipitation over the Bankok has been investigated by using the 2-dimensional non-hydrostatic model. It is concluded that the midnight maximum of precipitation over the Bankok. is due to the eastward propagation of a squal line excited over the mountain slope westward to the Bankok. This study shows it is important to consider a detailed orography in the Monsoon Asia. For 3 dimensional GCM, 1998 Asian Monsoon was simulated and flux differences due to model horizontal resolutions were examined. With respect to monthly mean fluxes over the large domain (500km x 500km), these differences are small except for the southern part of the Himalaya mountain. It is concluded that only large-scale mountain can exert an influence to fluxes in the range of T42 and T106.

  17. エアロゾルが下層雲の微物理特性と放射性特性へ及ぼす影響の定量的評価

    早坂 忠裕

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特定領域研究(A)

    Institution: 国立極地研究所

    1999 - 1999

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    本研究ではエアロゾル、雲、放射の地上観測と衛星データおよび定常気象観測データの解析から、エアロゾルが雲に及ぼす影響が日本付近でどの程度あるのかということを定量的に評価し、地球の放射収支ひいては気候変動メカニズムの解明に資することを目的とする。 平成11年度は、引き続き衛星データの解析を進めるとともに、平成10年度に新たに購入したパーティクルカウンターを用いて、他の測器と合わせて東北大学で集中観測を行うとともに、得られた結果を総合的に解析し、エアロゾルと雲の分布と変動の関係を調べた。 夏のヤマセ雲の場合には、雲粒がかなり大きく、空気塊も海洋性のものが侵入してくるため、青葉山の東北大学の観測地点でも大きな雲粒が観測された。また、冬の雲は不均質性が大きく、衛星から定量的な観測を行うのは困難であるが、今のところ、本観測においては人為的なエアロゾルによって雲の微物理特性が影響を受けているような例は見出されていない。

  18. Studies on polar low and water circulation on Norwegian Sea

    UYEDA Hiroshi, KAJIKAWA Masahiro, HAYASAKA Tadahiro, ASUMA Yoshio, KIKUCHI Katsuhiro, WADA Makoto

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A).

    Institution: HOKKAIDO UNIVERSITY

    1998 - 1999

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    In order to investigate the water circulation, structures of weather systems, and clouds and precipitation formation mechanism in the Arctic region, ground based observations were carried out using remote sensing instruments in the Scandinavian Arctic region and over the Norwegian Sea. An X-band vertical pointing Doppler radar was installed at Kiruna, Sweden and collected the data for 4 months from January to April in 1999. It was found that precipitation was strongly affected with the topography of the Scandinavian mountains. To understand the water circulation in this area, it is necessary to understand of the interaction between the topography and weather systems. Meteorological observations were also carried out from October 1999 at Bear Island in the central Norwegian Sea and Ny-Alesund, Spitsbergen. These data set would contribute to understand weather systems and water and energy circulation in the Arctic region.

  19. エアロゾルが下層雲の微物理特性と放射特性へ及ぼす影響の定量的評価

    早坂 忠裕

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特定領域研究(A)

    Institution: 東北大学

    1998 - 1998

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    本研究では、下層雲の微物理特性(雲水量、雲粒有効半径、雲粒数密度)と下層大気中のエアロゾル特性(粒径分布、数密度)の関係を明らかにすることを目的とする。本年度は、NOAA/AHRR衛星観測データを用いて日本周辺の雲の光学的厚さと雲粒有効半径を調べるとともに、これらの結果について従来の研究から得られている日本付近のエアロゾルの特性を考慮して考察を加えた。また、地上からの放射観測によって低層雲の雲水量と雲粒有効半径を推定する方法の開発と、雲の下の層(sub-cloud layer)におけるエアロゾルのパーティクルカウンターによる観測を開始した。さらに、エアロゾルの種類や数濃度が雲の短波放射特性に及ぼす影響について、簡単なシミュレーションを行い、考察を行った。 その結果、雲を形成している空気塊の起源の違いによって、形成される雲の雲粒有効半径が異なることが示唆された。しかしながら、太陽放射の反射光を用いて雲の微物理特性を推定する手法は、雲頂の凹凸や雲の不均質性によって影響を受ける可能性があり、細かい議論を行うためには、これらの点について研究を行う必要がある。また、エアロゾルが凝結核として雲に影響を及ぼし、雲の短波放射特性をどのように変化させるのかということについて、簡単な数値シミュレーションを行った。その結果、雲の短波放射に対する反射率と透過率は凝結核となるエアロゾルの構成物質よりも数密度に大きく依存することが分かった。一方、吸収率についてはあまり大きな変化は見られなかった。

  20. A Comprehensive Study on the Geodesy and Geophysics in Japan

    TANAKA Masayuki, FUKAO Yoshio, SASAO Tetsuo, TAKAGI Akio, KOZAI Yoshihide, HAYASAKA Tadahiro

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    1997 - 1998

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    Geophysics is one of natural sciences, in which the Earth and its environments are studied, and divided into several fields, i.e., geodesy, solid Earth science, atmospheric science, oceanography, aeronomy, etc. It covers wide area and interdisciplinary research has become quite important in recent years. The purpose of the present study is to review and analyze the results of the studies on the geophysics in the past time, and to find out the. way we should take in the future. In this study, many research data were collected and interview with many principal investigators in various fields were carried out. Then the role of science policy was investigated, and it is found that the Geodesy Council was quite important and contributed to the progress of geophysics in Japan. In various fields of geophysics, many instruments and observation system were established along with economic development in Japan. In the future, higher level research is expected in geophysics in Japan.

  21. A study of the large-scale structure of radiation, clouds and precipitation fields of Earth's atmosphere

    NAKAJIMA Teruyuki, NAKAMURA Kenji, TAKAMURA Tamio, INOUE Toshiro, HAYASAKA Tadahiro, NAKAMURA Takashi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research on Priority Areas

    Institution: The University of Tokyo

    1996 - 1998

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    The following successful results have been attained after the three year effort of the project : 1. Aerosol product : The world's first global distribution of aerosol size index was retrieved. Middle latitude industrial aerosols and a tropical belt of biomass burning aerosols were found. 2. Cloud product : Unique global distributions of cloud microphysical parameters were obtained. It is found that the cloud particle radius systematically decreases around large continents. 3. Through the products (1) and (2), the strength of cloud-aerosol interaction phenomenon on global average was obtained for the first time. This result is extremely useful for better modeling the cloud-aerosol phenomenon. 4. Surface energy budget product : The surface radiative energy budget was estimated from the GMS satellite for every one hour. Such a product showed better performance than the ISCCP (International Satellite Cloud Climatology Project) products. 5. Better understanding of energy flow, especially relationship between diabatic energy flow and atmospheric structure, was obtained. It is found that an estimation of poleward energy transportation from NCEP objective analysis data and ERBE satellite data is better than that of 80's, but still not sufficient for accurate evaluation of the surface radiative energy flux. It is also found that the long-term energy transport by low frequency and high frequency eddies vary complementarily contributing to the middle latitude winter dynamical field. 6. Satellite data archive : CCSR (Center for Climate System Research, the University of Tokyo) and CeRES (Center for Environmental Remote Sensing, the Chiba university) have constructed ten year scale satellite data bases of GMS, AVHRR, SSM/I etc.. The database can be used in the network environment. 7. Future heritage : Several young promising scientists and students have been raised for performing further development of the subjects in this study.

  22. 北方圏における地球環境変動に関する共同研究

    田中 正之, SENTMAN D.D., 大竹 政和, 坂野井 健, 佐藤 春夫, 福西 浩, 吉本 和生, 長谷川 昭, 高橋 幸弘, WYSS M., MUCNUTT S.R., STRINGER W.J, BISWAS N.N., HANSEN R.A., SHAW G.E., BENNER R.L., STAMNES K., 田口 真, AKASOFU S.ーI, DEEHR C.S., 青木 周司, 早坂 忠裕, 川村 宏, 中澤 高清, SMITH R.W., 渡部 重十, 花輪 公雄

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 国際学術研究

    Institution: 東北大学

    1996 - 1998

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    東北大学理学部・同理学研究科とアラスカ大学フェアバンクス校との部局間協定にもとづき、本年度の北方圏における地球環境変動に関する共同研究は、(1)オーロラと超高層大気の研究、(2)雷放電発光現象の研究、(3)成層圏オゾン層の研究、(4)地震・火山の研究を中心に行なった。まず、(1)オーロラと超高層大気の研究では、通信総合研究所が開発したプロトンオーロライメージャーを1999年2月にアラスカ大学地球物理学研究所ポーカーフラット観測所に設置し観測を行った。さらに昼側カスプ領域のオーロラのロケット・地上同時観測のために東北大学のプロトンオーロライメージャーを1月にノルウェー・スバールバルに設置し、共同観測を実施した。これらの観測から得られたデータの共同解析を現在行っている。(2)雷放電発光現象の研究では、1998年7月〜8月にコロラドでスプライト・エルブス発光現象の共同観測を実施した他、1998年5月にアラスカ大学より1名を招へいし、1997年度に得られた雷発光現象データの共同解析を行った。(3)成層圏オゾン層の研究では、1997年2月〜5月の間にポーカーフラットで東北大学のレーザーヘテロダイン分光計を用いて実施したオゾン、一酸化二窒素、メタン観測のデータとADEOS衛星データの比較を行った。(4)地震・火山の研究では、アラスカ大学地震観測ネットワークで得られたデータと東北大学地震観測ネットワークで得られたデータの共同解析を実施し、発震メカニズムや地震予知のための研究を行った。

  23. Studies on Water Vapor, Aerosol and Snow Crystals in Arctic

    KIKUCHI Katsuhiro, HAYASAKA Tadahiro, KAJIKAWA Masahiro, SAKURAI Ken-ichi, ASUMA Yoshio, UYEDA Hiroshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for international Scientific Research

    Institution: Hokkaido University

    1995 - 1997

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    The WANTS-ARCTIC : Sweden Experiments (1997/1998) were carried out from December 14,1997 to January 20,1998 at the Swedish Space Physics Institute, Kiruna, Sweden. An X-band vertical pointing Doppler radar, Laser ceilometer, Microwave radiometer, Pyranometer, Aerosol sampling and Mesonet station were set up at the institute. Snow crystals were also observed using a polarization microscpoe and a replica solution method on the ground surface. During the obsevation period, as a whole, it was a relatively warm in this winter season in Scandinavia area. It was warm and calm in December and cold and stormy in January. We had a couple of snow storms in the middle of January. We could, therefore observe various types of snow crystals. For instance, there were a weak and steady snowfall which was effected by mountains and a heavy snowfall with deep radar echoes when a low pressure system was approaching from the Norwegian Sea. Throughout the observation, the radar system collected the data more than 600 hours. It was clarified using the microwave radiometer that the water vapor contents integrated vertically were 0.4,0.7 and 1.0cm in the fair weather, during snowfalls and falling graupel particles, respectively. And, the liguid water contents recorded 0.01 and 0.04cm in the falling of rimed crystals and graupel particles, respectively. Their values changed largely depending on the types of disturbances. Microphotographs using a polarization microscope were taken more than 3000 frames and 500 slide glasses were used to collecting snow crystals. These data were analyzing energetically now.

  24. Hydrological Environment in Southeast Asia

    MUSIAKE Katsumi, OKI Taikan, OHTE Nobuhito, SUZUKI Masakazu, YAMANAKA Manabu, AOKI Masatoshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for international Scientific Research

    Institution: Institute of Industrial Science, University of Tokyo

    1995 - 1997

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    Preliminary studies and preparatory works done so far towards IOP in 1998 are as follows ; 1) A disdromater which measures rain drop distribution as well as rainfall intensity was installed at Chiang Mai TMD station located in the range of Om Koi rader of BRRAA. 2) Preliminary enhanced rawinsonde observations with a frequency of 4 times a day were carried out at Banhkok, Chiang Mai and Ubon Ratchathani TMD stations for 4 weeks from May to June and from August to September respectively in both 1996 and 1997. 3) For non-irrigated paddy fields which are one of typical land cover types in the Chao Phraya river basin, an observational base equipped with a 10m PBL tower and a sonde releasing site was established at west Sukhothai. Sukhothai. Some preliminary studies such as operational test of AWS/GAME-PAM,comparison in durface flux estimation among Bowen Ratio, Eddy Correlation and Band-Pass Covariance methods, enhanced rawinsonde observations with a frequency of 4-8 times a day, etc.were carried out at this observational base. 4) A 50m PBL tower was constructed at Kog Ma forest hydrologic experimental watershed of KU near Chiang Mai, and preliminary observations were started from the middle of February, 1997. 5) Mobile observations for various types of land cover which are planned to complement the fixed flux observations were carried out around Sukhothai area. 6) Development of meso-scale atmospheric model and distributed hydrologic model for the Chao Phraya river basin has been initiated.

  25. Study of cloud and climate modification caused by global scale air pollution

    NAKAJIMA Teruyuki, HAYASAKA Tadahiro, NAKAMURA Kohzou, HAYASHI Yoshiyuki, SUMI Akimasa

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for General Scientific Research (B)

    Institution: The University of Tokyo

    1992 - 1993

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    (1) NOAA/AVHRR LAC data sets were purchased and analyzed for retrieving cloud and aerosol microphysical parameters. We have developed an algorithm for getting cloud optical thickness and effective particle radius by making use of AVHRR channel 1,3 and 4 radiances. We also developed an algorithm for retrieving aerosol optical characteristics from AVHRR channel 1 and 2 and GMS band 1. (2) We have found examples of cloud modifications over areas such as the western coastal region of the North American Continent, the Amazon area, the Yellow Sea area, and the western coastal region of the African Continent. General characteristics for the modifications are that the clouds in the continental air mass have large liquid water path and small effective particle radius ; the clouds in the maritime air mass have small liquid water path and large effective particle radius. (3) The effect of the obtained cloud modification on climate has been estimated by a simple energy budget model. We found a cloud system which has drizzle particles can cool the climate system effectively. (4) We have developed an accurate yet efficient radiation code which can treat scattering/absorption/emission processes by clouds and aerosols as well as absorption/emission by gaseous constituents. This code has been successfully implemented into our numerical climate model. (5) In order to improve our description and prediction ability of radiative convective equilibrium states, the thermal convection theory of Boussinesq fluid is reconsidered aiming at constructing a basic theory for radiative convection which should replace the current theory basically developed for Benard convection. The focus is placed on examine the difference in the appearance of circulation structures caused by thermal conditions imposed to the system. Numerical calculations of two dimensional fluid show that the wavenumber one circulation structure and asymmetry of upward and downward motions, which are the characteristics considered generic to the moist convection, widely appear in the convection driven by internal cooling in general. Those features are also recognized in the calculations of three dimensional spherical convection.

  26. International Cooperative Research on Climate Variation

    MATSUNO Taro., YAMAGATA T., SUGINOHARA N., YAMASAKI M., ASANO S., SATO N., KODERA K., YASUNARI T., TANAKA H., SUMI A., TAKEDA T., ASAI T., MUSHIAKI M., TANAKA M.

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for international Scientific Research

    Institution: University of Tokyo

    1991 - 1993

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    Climate changes of both natural and anthropogenic origins are now important issues not only in scientific community but in public because of their great(potential)impacts on human life and industry. For this reason an international cooperative research program "World Climate Research Program(WCRP)" is now going on. Japanese climate science community has been participating in this international endeavor through individual projects carried out by group of scientists organized by the sponsorship of Japanese funding agencies. In order to conduct these national research projects in a coherent manner with international ones it is necessary for representative scientists to communicate with international groups by participating in Working Groups and Science Steering Groups of the WCRP. The present project is organized to keep such an interface between Japanese and international groups.

  27. マイクロ波を用いた水蒸気鉛直分布の評価に関する基礎的研究

    早坂 忠裕

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 奨励研究(A)

    Institution: 東北大学

    1992 - 1992

  28. 衛星データを用いたエアロゾル空間分布変動の定量的評価

    早坂 忠裕

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 奨励研究(A)

    Institution: 東北大学

    1991 - 1991

  29. 地球および惑星大気成分の光散乱特性の再評価

    田中 正之, 中島 映至, 岡野 章一, 中澤 高清, 早坂 忠裕

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 一般研究(B)

    Institution: 東北大学

    1989 - 1990

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    地球を含む惑星の大気分子の光散乱特性を、高感度密型散乱光度計による室内実験によって再評価することが本研究の目的である。このために、まず東北大学において開発された高感度散乱光度計を改良し、精度の向上と装置の気密化を行った。その結果、散乱角約3度の前方散乱光から散乱角約170度の後方散乱光までを対象とし、散乱マトリックスの全要素を連続的に測定することのできる装置を作製した。これにより、非球形分子の偏極率の非等方性に由来する偏光解消度の決定が可能となった。 今年度は、惑星大気中の太陽放射の散乱過程を数値シミュレ-ションし、一回散乱マトリックスの測定精度を吟味した。その結果、気体成分の偏光解消度を有効数字3桁の精度でおさえれば、惑星大気の熱収支やリモ-トセンシングにとって有益なデ-タを供給できることが分かった。ところが、前年度実施した窒素ガスの散乱光の測定から、高純度ガスの偏光解消度を有効数字3桁の精度で測定するには、長時間の真空引きによって他の気体成分と時にエアロゾルを光散乱セルから完全に除去する必要があることも同時に明らかになった。従って、このような高精度の測定を達成するには、既存の光散乱セルの改造だけでは不十分であることが結論された。そこで今年度は、このような仕様を満足する光散乱セルの製作をまずおこない、タ-ゲットとする気体以外からの散乱寄与を極力除去する実験を繰り返し行っている。

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Social Activities 19

  1. 日本気象学会関西支部夏季大学

    2007/08/07 - 2007/08/08

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    東アジアの経済発展と温室効果気体・エアロゾルの変動」、日本気象学会関西支部第29回夏季大学で一般の受講者を対象に講義、キャンパスプラザ京都、京都市

  2. 平成16年度環境教育担当教員講習会

    2004/11/02 - 2004/11/05

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    平成16年度環境教育担当教員講習会(西日本ブロック)において高校、中学の教員を対象に講演「大気、気象、衛星から見た地球温暖化について」

  3. 泉萩会

    2017/11/11 -

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    泉萩会(理学部物理系3学科同窓会)の2017年度総会において、講演を依頼され、「地球の放射収支と気候」という題名で1時間講演を行った。

  4. ぶらりがく(理学研究科公開講座)

    2017/09/09 -

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    地球温暖化問題ってなに?

  5. 日本学術会議公開シンポジウム「我が国の衛星地球観測計画」

    2017/07/18 -

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    講演「我が国の地球衛星観測の現状と将来について-気候監視の側面から」

  6. (NPO)環境エネルギー技術研究所第11回SFTEEセミナー

    2016/11/11 -

  7. 市民のためのサイエンス講座2016「火山噴火の謎に迫る~巨大地震と東北の噴火予知」

    2016/09/03 -

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    東北大学・読売新聞社東北総局共催で標記講演会を、文科系総合講義棟で行なった。その中で「噴火がもたらす気候への影響」という題名で講演を行った。参加者約220名。

  8. 出前授業(模擬授業)

    2015/09/10 -

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    千葉県立千葉高校の依頼により、大学で行なっている講義の模擬授業を高校生を対象に実施した。テーマは「宇宙から見る雲」。受講生約50名。

  9. 第5回気象サイエンスカフェ東北

    2014/11/16 -

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    日本気象学会東北支部の主催で、一般市民を対象に「気象衛星ひまわり」という題名で講演を行った。

  10. 出前授業(模擬授業)

    2014/11/06 -

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    千葉県立千葉高校の依頼により、大学で行なっている講義の模擬授業を高校生を対象に実施した。テーマは「地球温暖化問題リテラシー」受講生約50名。

  11. 湖南市図書館講演会

    2008/06/21 -

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    「地球温暖化のみかた」、一般向けに講演、湖南市、滋賀県

  12. 第1回富山大学環境塾

    2007/11/21 -

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    基調講演「地球温暖化問題リテラシー」とパネルディスカッション

  13. 日本技術士会近畿支部・講演会

    2007/11/16 -

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    「東アジアの大気中の物質循環と気候に及ぼす人間活動の影響」、日本技術士会近畿支部の会員を対象に講演、アーバネックス備後町ビル、大阪市

  14. コスモスセミナー

    2007/11/07 -

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    「地球温暖化問題について」、京北第三小学校、4、5年生を対象に授業、京都市

  15. 地球研第1回地域セミナー「雪と人:くらしをささえる日本海」

    2005/09/17 -

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    講演「アジアのなかの日本海と大気」とパネルディスカッション、富山県民会館、富山市

  16. 修学院第二小学校教育後援会

    2005/07/19 -

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    「地球温暖化問題って何?」講演、小学生と父兄が対象、修学院第二小学校、京都市

  17. 上越市板倉地区シルバー大学院

    2005/05/20 -

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    「地球温暖化問題」講演

  18. コスモスセミナー

    2005/02/24 -

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    大阪市立横堤小学校において5年生を対象に授業「地球温暖化問題について」

  19. コスモスセミナー

    2004/12/07 -

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    奈良市立鶴舞小学校において4年生と6年生を対象に授業「地球温暖化問題について」

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Media Coverage 4

  1. 東北放送 Nスタみやぎ

    東北放送

    2016/12/20

    Type: TV or radio program

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    温暖化と宮城の気象

  2. 東北放送 Nスタみやぎ

    東北放送

    2015/07/03

    Type: TV or radio program

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    ひまわり8号運用開始でここが変わる

  3. 山崎弘士の人めぐり・音めぐり

    KBSラジオ

    2007/03/20

    Type: Other

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    研究内容や研究の面白さについて話す。

  4. 「京都ちゃちゃちゃっ」

    KBS京都テレビ

    2006/12/05

    Type: TV or radio program

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    京都議定書について解説

Other 3

  1. 地表面放射収支プロダクトの評価に関する研究

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    本研究では、GCOM-C1/SGLI等の可視赤外イメージャーのデータ解析から得られる地表面における短波放射フラックスおよび長波放射フラックスの精度を、定量的に評価する。

  2. 雲・エアロゾルの特性解明に基づく地表面放射収支プロダクトの評価に関する研究

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    本研究では、GCOM-C1/SGLI等の可視赤外イメージャーのデータ解析から得られる雲、エアロゾルの特性を基に得られる地表面における短波放射フラックスおよび長波放射フラックスの精度を、定量的に評価する。

  3. 東アジアにおけるエアロゾルの時空間変動と光学的特性に関する研究

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    本研究は、ライダー観測と大気化学輸送モデルによる土壌エアロゾルと大気汚染エアロゾルの高度分布とその変動について研究を行うものである。現在実施中であるが、今までの結果からは、春季の日本近辺のエアロゾルの鉛直分布は、中国大陸西部の砂漠地帯に起源を持つ土壌エアロゾル(黄砂)が比較的高い高度に存在するのに対し、中国沿岸部あるいは東南アジアで排出された大気汚染エアロゾルは低い高度で日本付近に到達していることが統計的に示された。