Details of the Researcher

PHOTO

Hironobu Iwabuchi
Section
Graduate School of Science
Job title
Professor
Degree

  • 博士（理学）（東北大学）

  • 修士（理学）（東北大学）

Research History 7

  • 2025/04 - Present
    Tohoku University　Graduate School of Science Center for Atmospheric and Oceanic Studies　Professor

  • 2011/01 - 2025/03
    Graduate School of Science, Tohoku University　Associate Professor

  • 2010/01 - 2010/12
    Department of Atmospheric Sciences, Texas A&M University　Assistant Research Scientist

  • 2005/04 - 2009/12
    Japan Agency for Marine-Earth Science and Technology　Research Scientist

  • 2004/07 - 2005/03
    Japan Agency for Marine-Earth Science and Technology　Postdoctoral Researcher

  • 2002/04 - 2004/06
    Frontier Research System for Global Change　Postdoctoral Researcher

  • 2001/04 - 2002/03
    東北大学東北アジア研究センター　Research Assistant

Show all Show first 5

Education 2

  • Tohoku University　Graduate School, Division of Natural Science　地球物理学専攻

    - 2001/03/31

  • Tohoku University　Faculty of Science　地球物理学科

    - 1996/03/31

Committee Memberships 2

  • 宇宙航空研究開発機構地球圏総合診断委員会　委員

    2011/09 - 2012/03

  • 宇宙航空研究開発機構地球圏総合診断委員会　委員

    2011/09 - 2012/03

Professional Memberships 4

  • JAPAN GEOSCIENCE UNION

  • Optical Society of America

  • American Geophysical Union

  • Meteorological Society of Japan

Research Interests 6

  • 3D radiative effects

  • optics of aerosols and clouds

  • radiation budget

  • remote sensing

  • radiative transfer

  • Atmospheric radiation

Research Areas 1

  • Natural sciences / Atmospheric and hydrospheric science /

Awards 3

  1. National Aeronautics and Space Administration Group Achievement Award

    2013/08　National Aeronautics and Space Administration　to ACCRI Aircraft Cloud Effects Team for outstanding contributions to understanding the effects of aircraft on cloud cover and the resulting impact on climate

  2. 日本気象学会 山本・正野論文賞

    2007/10　日本気象学会

  3. 可視化情報学会 学会賞（SGI賞）

    2005/07　可視化情報学会

Papers 77

  1. The Education and Research 3D Radiative Transfer Toolbox (EaR(3)T) - towards the mitigation of 3D bias in airborne and spaceborne passive imagery cloud retrievals Peer-reviewed

    Hong Chen, K. Sebastian Schmidt, Steven T. Massie, Vikas Nataraja, Matthew S. Norgren, Jake J. Gristey, Graham Feingold, Robert E. Holz, Hironobu Iwabuchi

    ATMOSPHERIC MEASUREMENT TECHNIQUES　16　(7)　1971-2000　2023/04

    DOI： 10.5194/amt-16-1971-2023 　

    ISSN： 1867-1381

    eISSN： 1867-8548

  2. Analysis of Diurnal Evolution of Cloud Properties and Convection Tracking over the South China Coastal Area Peer-reviewed

    Xinyue Wang, Hironobu Iwabuchi, Jean-Baptiste Courbot

    REMOTE SENSING　14　(19)　2022/10

    DOI： 10.3390/rs14195039 　

    eISSN： 2072-4292

  3. Cloud identification and property retrieval from Himawari-8 infrared measurements via a deep neural network Peer-reviewed

    Xinyue Wang, Hironobu Iwabuchi, Takaya Yamashita

    REMOTE SENSING OF ENVIRONMENT　275　2022/06

    DOI： 10.1016/j.rse.2022.113026 　

    ISSN： 0034-4257

    eISSN： 1879-0704

  4. Retrieval of Cloud Optical Thickness from Sky-View Camera Images using a Deep Convolutional Neural Network based on Three-Dimensional Radiative Transfer Peer-reviewed

    Ryosuke Masuda, Hironobu Iwabuchi, Konrad Sebastian Schmidt, Alessandro Damiani, Rei Kudo

    Remote Sensing　11　(17)　1962-1962　2019/08/21

    Publisher: MDPI AG

    DOI： 10.3390/rs11171962 　

    eISSN： 2072-4292

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    Observation of the spatial distribution of cloud optical thickness (COT) is useful for the prediction and diagnosis of photovoltaic power generation. However, there is not a one-to-one relationship between transmitted radiance and COT (so-called COT ambiguity), and it is difficult to estimate COT because of three-dimensional (3D) radiative transfer effects. We propose a method to train a convolutional neural network (CNN) based on a 3D radiative transfer model, which enables the quick estimation of the slant-column COT (SCOT) distribution from the image of a ground-mounted radiometrically calibrated digital camera. The CNN retrieves the SCOT spatial distribution using spectral features and spatial contexts. An evaluation of the method using synthetic data shows a high accuracy with a mean absolute percentage error of 18% in the SCOT range of 1–100, greatly reducing the influence of the 3D radiative effect. As an initial analysis result, COT is estimated from a sky image taken by a digital camera, and a high correlation is shown with the effective COT estimated using a pyranometer. The discrepancy between the two is reasonable, considering the difference in the size of the field of view, the space–time averaging method, and the 3D radiative effect.

  5. Cloud property retrieval from multiband infrared measurements by Himawari-8 Peer-reviewed

    Hironobu Iwabuchi, Nurfiena Sagita Putri, Masanori Saito, Yuka Tokoro, Miho Sekiguchi, Ping Yang, Bryan A. Baum

    Journal of the Meteorological Society of Japan　96B　27-42　2018

    Publisher: Meteorological Society of Japan

    DOI： 10.2151/jmsj.2018-001 　

    ISSN： 0026-1165

  6. Feasibility study of multi-pixel retrieval of optical thickness and droplet effective radius of inhomogeneous clouds using deep learning Peer-reviewed

    Rintaro Okamura, Hironobu Iwabuchi, K. Sebastian Schmidt

    ATMOSPHERIC MEASUREMENT TECHNIQUES　10　(12)　4747-4759　2017/12

    DOI： 10.5194/amt-10-4747-2017 　

    ISSN： 1867-1381

    eISSN： 1867-8548

  7. Multispectral Monte Carlo radiative transfer simulation by the maximum cross-section method Peer-reviewed

    Hironobu Iwabuchi, Rintaro Okamura

    JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER　193　40-46　2017/05

    DOI： 10.1016/j.jqsrt.2017.01.025 　

    ISSN： 0022-4073

    eISSN： 1879-1352

  8. Ice particle morphology and microphysical properties of cirrus clouds inferred from combined CALIOP-IIR measurements Peer-reviewed

    Masanori Saito, Hironobu Iwabuchi, Ping Yang, Guanglin Tang, Michael D. King, Miho Sekiguchi

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES　122　(8)　4440-4462　2017/04

    DOI： 10.1002/2016JD026080 　

    ISSN： 2169-897X

    eISSN： 2169-8996

  9. Retrieval of radiative and microphysical properties of clouds from multispectral infrared measurements Invited Peer-reviewed

    Hironobu Iwabuchi, Masanori Saito, Yuka Tokoro, Nurfiena Sagita Putri, Miho Sekiguchi

    PROGRESS IN EARTH AND PLANETARY SCIENCE　3　(32)　2016/10

    DOI： 10.1186/s40645-016-0108-3 　

    ISSN： 2197-4284

  10. A new method of measuring aerosol optical properties from digital twilight photographs Peer-reviewed

    Saito, M, H. Iwabuchi

    Atmos. Meas. Tech.　8　(10)　4295-4311　2015/10

    DOI： 10.5194/amt-8-4295-2015 　

    ISSN： 1867-1381

    eISSN： 1867-8548

  11. Radiative and Microphysical Properties of Cirrus Cloud Inferred from Infrared Measurements Made by the Moderate Resolution Imaging Spectroradiometer (MODIS). Part I: Retrieval Method Peer-reviewed

    Hironobu Iwabuchi, Soichiro Yamada, Shuichiro Katagiri, Ping Yang, Hajime Okamoto

    JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY　53　(5)　1297-1316　2014/05

    DOI： 10.1175/JAMC-D-13-0215.1 　

    ISSN： 1558-8424

    eISSN： 1558-8432

  12. Physical and optical properties of persistent contrails: Climatology and interpretation Peer-reviewed

    Hironobu Iwabuchi, Ping Yang, K. N. Liou, Patrick Minnis

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES　117　D06215　2012/03

    DOI： 10.1029/2011JD017020 　

    ISSN： 2169-897X

    eISSN： 2169-8996

  13. Temperature dependence of ice optical constants: Implications for simulating the single-scattering properties of cold ice clouds Peer-reviewed

    Hironobu Iwabuchi, Ping Yang

    JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER　112　(15)　2520-2525　2011/10

    DOI： 10.1016/j.jqsrt.2011.06.017 　

    ISSN： 0022-4073

  14. Fast and accurate radiance calculations using truncation approximation for anisotropic scattering phase functions Peer-reviewed

    Hironobu Iwabuchi, Tsuneaki Suzuki

    JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER　110　(17)　1926-1939　2009/11

    DOI： 10.1016/j.jqsrt.2009.04.006 　

    ISSN： 0022-4073

  15. A coupled 1-D atmosphere and 3-D canopy radiative transfer model for canopy reflectance, light environment, and photosynthesis simulation in a heterogeneous landscape Peer-reviewed

    Hideki Kobayashi, Hironobu Iwabuchi

    REMOTE SENSING OF ENVIRONMENT　112　(1)　173-185　2008/01

    DOI： 10.1016/j.rse.2007.04.0l 　

    ISSN： 0034-4257

  16. Efficient Monte Carlo methods for radiative transfer modeling Peer-reviewed

    Hironobu Iwabuchi

    JOURNAL OF THE ATMOSPHERIC SCIENCES　63　(9)　2324-2339　2006/09

    DOI： 10.1175/JAS3755.1 　

    ISSN： 0022-4928

  17. 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

  18. 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

  19. Segmentation-based multi-pixel cloud optical thickness retrieval using a convolutional neural network Peer-reviewed

    Vikas Nataraja, Sebastian Schmidt, Hong Chen, Takanobu Yamaguchi, Jan Kazil, Graham Feingold, Kevin Wolf, Hironobu Iwabuchi

    ATMOSPHERIC MEASUREMENT TECHNIQUES　15　(17)　5181-5205　2022/09

    DOI： 10.5194/amt-15-5181-2022 　

    ISSN： 1867-1381

    eISSN： 1867-8548

  20. Diurnal variations of different types of cloud over the Baiu-Meiyu frontal zone using retrieved cloud properties: Implication for the rainfall process Peer-reviewed

    Takaya Yamashita, Hironobu Iwabuchi

    ATMOSPHERIC RESEARCH　271　2022/02

    DOI： 10.1016/j.atmosres.2022.106139 　

    ISSN： 0169-8095

    eISSN： 1873-2895

  21. Ensemble Meteorological Cloud Classification Meets Internet of Dependable and Controllable Things Peer-reviewed

    Jinglin Zhang, Pu Liu, Feng Zhang, Hironobu Iwabuchi, Antonio Artur de H. e Ayres de Moura, Victor Hugo C. de Albuquerque

    IEEE INTERNET OF THINGS JOURNAL　8　(5)　3323-3330　2021/03

    DOI： 10.1109/JIOT.2020.3043289 　

    ISSN： 2327-4662

  22. The semi-diurnal cycle of deep convective systems over Eastern China and its surrounding seas in summer based on an automatic tracking algorithm Peer-reviewed

    Wenwen Li, Feng Zhang, Yueyue Yu, Hironobu Iwabuchi, Zhongping Shen, Guoyin Wang, Yijun Zhang

    CLIMATE DYNAMICS　56　(1-2)　357-379　2021/01

    DOI： 10.1007/s00382-020-05474-1 　

    ISSN： 0930-7575

    eISSN： 1432-0894

  23. Efficient radiative transfer model for thermal infrared brightness temperature simulation in cloudy atmospheres Peer-reviewed

    Wenwen Li, Feng Zhang, Yi-Ning Shi, Hironobu Iwabuchi, Mingwei Zhu, Jiangnan Li, Wei Han, Husi Letu, Hiroshi Ishimoto

    OPTICS EXPRESS　28　(18)　25730-25749　2020/08

    DOI： 10.1364/OE.400130 　

    ISSN： 1094-4087

  24. Evaluation of cloud properties from reanalyses over East Asia with a radiance-based approach Peer-reviewed

    Bin Yao, Chao Liu, Yan Yin, Zhiquan Liu, Chunxiang Shi, Hironobu Iwabuchi, Fuzhong Weng

    Atmospheric Measurement Techniques　13　(3)　1033-1049　2020/03/04

    Publisher: Copernicus GmbH

    DOI： 10.5194/amt-13-1033-2020 　

    eISSN： 1867-8548

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    Abstract. Extensive observational and numerical investigations have been performed to better characterize cloud properties. However, due to the large variations in cloud spatiotemporal distributions and physical properties, quantitative depictions of clouds in different atmospheric reanalysis datasets are still highly uncertain. A radiance-based evaluation approach is introduced and performed to evaluate the quality of cloud properties from reanalysis datasets. The China Meteorological Administration reanalysis (CRA); the ECMWF fifth-generation reanalysis (ERA5); and the Modern-Era Retrospective analysis for Applications, Version 2 (MERRA-2), i.e., those reanalyses providing sufficient cloud information, are considered. To avoid the influence of assumptions and uncertainties on satellite retrieval algorithms, forward radiative transfer simulations are used as a bridge to translate the reanalyses to corresponding radiances that are expected to be observed by satellites. The simulated reflectances and brightness temperatures (BTs) are directly compared with observations from the Advanced Himawari Imager onboard the Himawari-8 satellite in the East Asia region. We find that the simulated reflectances and BTs based on CRA and ERA5 are close to each other. CRA represents the total and midlayer cloud cover better than the other two datasets, and ERA5 depicts deep-convection structures more closely than CRA does. Comparisons of the simulated and observed BT differences suggest that water clouds are generally overestimated in ERA5 and MERRA-2, and MERRA-2 also overestimates the ice clouds over cyclone centers. Overall, clouds from CRA, ERA5, and MERRA-2 show their own advantages in different aspects. The ERA5 reanalysis has the best capability to represent the cloudy atmospheres over East Asia, and the CRA representations are close to those in ERA5.

  25. Impact of delta-Four-Stream Radiative Transfer Scheme on global climate model simulation Peer-reviewed

    Quan Yang, Feng Zhang, Hua Zhang, Zhili Wang, Hironobu Iwabuchi, Jiangnan Li

    JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER　243　2020/03

    DOI： 10.1016/j.jqsrt.2019.106800 　

    ISSN： 0022-4073

    eISSN： 1879-1352

  26. The δ-six-stream spherical harmonic expansion adding method for solar radiative transfer Peer-reviewed

    Dan Xue, Feng Zhang, Yi-Ning Shi, Hironobu Iwabuchi, Jiangnan Li, Shuai Hu, Wei Han

    Journal of Quantitative Spectroscopy and Radiative Transfer　243　106818-106818　2020/03

    Publisher: Elsevier BV

    DOI： 10.1016/j.jqsrt.2019.106818 　

    ISSN： 0022-4073

  27. Investigating Aerosol Effects on Maritime Deep Convective Clouds Using Satellite and Reanalysis Data Peer-reviewed

    Pradeep Khatri, Hiroaki Ooashi, Hironobu Iwabuchi

    SOLA　16　(0)　228-232　2020

    Publisher: Meteorological Society of Japan

    DOI： 10.2151/sola.2020-038 　

    eISSN： 1349-6476

  28. 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

    Publisher: Copernicus GmbH

    DOI： 10.5194/amt-12-6037-2019 　

    eISSN： 1867-8548

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    Abstract. An optimal estimation algorithm to retrieve the cloud optical depth (COD) and cloud particle effective radius (CER) from spectral zenith radiances observed by narrow field-of-view (FOV) ground-based sky radiometers was developed. To further address the filter degradation problem while analyzing long-term observation data, an on-site calibration procedure is proposed, which has good accuracy compared with the standard calibration transfer method. An error evaluation study conducted by assuming errors in observed transmittances and ancillary data for water vapor concentration and surface albedo suggests that the errors in input data affect retrieved CER more than COD. Except for some narrow domains that fall within a COD of &lt; 15, the retrieval errors are small for both COD and CER. The retrieved cloud properties reproduce the broadband radiances observed by a narrow FOV radiometer more precisely than broadband irradiances observed by a wide-FOV pyranometer, justifying the quality of the retrieved product (at least of COD) and indicating the important effect of the instrument FOV in cloud remote sensing. Furthermore, CODs (CERs) from sky radiometer and satellite observations show good (poor) agreement.

  29. Wintertime Modulation of the Local Cloud and Diagnostic Fields by the Hadley Cell Subsiding Boundary Over the Western North Pacific Peer-reviewed

    Xinyue Wang, Hironobu Iwabuchi

    Geophysical Research Letters　46　(15)　9004-9012　2019/08/16

    Publisher: American Geophysical Union (AGU)

    DOI： 10.1029/2019gl083470 　

    ISSN： 0094-8276

    eISSN： 1944-8007

  30. Development of a Rapid Retrieval Method for Cloud Optical Thickness and Cloud-Top Height Using Himawari-8 Infrared Measurements Peer-reviewed

    Sakai, S, H. Iwabuchi, F. Zhang

    SOLA　15　57-61　2019/03/16

    DOI： 10.2151/sola.2019-012 　

  31. An assessment of the impacts of cloud vertical heterogeneity on global ice cloud data records from passive satellite retrievals Peer-reviewed

    Wang, C, S. Platnick, T. Fauchez, K. Meyer, Z. Zhang, H. Iwabuchi, B. H. Kahn

    Journal of Geophysical Research _ Atmospheres　124　(3)　1578-1595　2019/02/16

    DOI： 10.1029/2018JD029681 　

    ISSN： 2169-897X

    eISSN： 2169-8996

  32. An Intensive Campaign-Based Intercomparison of Cloud Optical Depth from Ground and Satellite Instruments under Overcast Conditions Peer-reviewed

    Alessandro Damiani, Hitoshi Irie, Tamio Takamura, Rei Kudo, Pradeep Khatri, Hironobu Iwabuchi, Ryosuke Masuda, Takashi Nagao

    SOLA　15　(0)　198-204　2019

    Publisher: Meteorological Society of Japan

    DOI： 10.2151/sola.2019-036 　

    eISSN： 1349-6476

  33. Characteristics of Diurnal Pulses Observed in Typhoon Atsani Using Retrieved Cloud Property Data Peer-reviewed

    Xinyue Wang, Hironobu Iwabuchi, Naoya Takahashi

    SOLA　15　(0)　137-142　2019

    Publisher: Meteorological Society of Japan

    DOI： 10.2151/sola.2019-025 　

    eISSN： 1349-6476

  34. 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 　

  35. 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

  36. Development of gas absorption tables and an atmospheric radiative transfer package for applications using the Advanced Himawari Imager Peer-reviewed

    Sekiguchi, M. H. Iwabuchi, T. M. Nagao, T. Nakajima

    J. Meteor. Soc. Japan　96B　77-89　2018/08

    Publisher: Meteorological Society of Japan

    DOI： 10.2151/jmsj.2018-007 　

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    <p>&emsp;We developed an atmospheric gas absorption table for the Advanced Himawari Imager (AHI) based on the correlated k-distribution (CKD) method with the optimization method, which was used to determine quadrature weights and abscissas. We incorporated the table and band information of the AHI into a multi-purpose atmospheric radiative transfer package, Rstar. We updated the package so that users could easily specify the satellite and band number. Use of this update made it possible for the optimized CKD method to carry out calculations rapidly and accurately. Rstar is easy for beginners to use and facilitates comparison of results. Cloud retrieval tests using different numbers of quadrature points showed that cloud retrievals could be significantly affected by the accuracy of the CKD model.</p>

  37. The standard perturbation method for infrared radiative transfer in a vertically internally inhomogeneous scattering medium Peer-reviewed

    Yi-Ning Shi, Feng Zhang, Jia-Ren Yan, Hironobu Iwabuchi, Zhen Wang

    Journal of Quantitative Spectroscopy and Radiative Transfer　213　149-158　2018/07/01

    Publisher: Elsevier Ltd

    DOI： 10.1016/j.jqsrt.2018.03.025 　

    ISSN： 0022-4073

  38. Vertical Profiles of Ice Cloud Microphysical Properties and Their Impacts on Cloud Retrieval Using Thermal Infrared Measurements Peer-reviewed

    Pradeep Khatri, Hironobu Iwabuchi, Masanori Saito

    Journal of Geophysical Research: Atmospheres　123　(10)　5301-5319　2018/05/27

    Publisher: Blackwell Publishing Ltd

    DOI： 10.1029/2017JD028165 　

    ISSN： 2169-8996 2169-897X

  39. A new radiative transfer method for solar radiation in a vertically internally inhomogeneous medium Peer-reviewed

    Feng Zhang, Jia-Ren Yan, Jiangnan Li, Kun Wu, Hironobu Iwabuchi, Yi-Ning Shi

    Journal of the Atmospheric Sciences　75　(1)　41-55　2018/01/01

    Publisher: American Meteorological Society

    DOI： 10.1175/JAS-D-17-0104.1 　

    ISSN： 1520-0469 0022-4928

  40. Double-delta-function adjustment in thermal radiative transfer Peer-reviewed

    Kun Wu, Feng Zhang, Hironobu Iwabuchi, Yi-Ning Shi, Mingkeng Duan

    INFRARED PHYSICS & TECHNOLOGY　86　139-146　2017/11

    DOI： 10.1016/j.infrared.2017.07.006 　

    ISSN： 1350-4495

    eISSN： 1879-0275

  41. Cloud life cycle studied by using frequent observations by the Himawari-8 Invited Peer-reviewed

    Iwabuchi, H, Y. Tokoro, M. Saito, N. S. Putri, M. Sekiguchi

    Earozoru Kenkyu　32　(2)　108-111　2017/07

    Publisher:

    DOI： 10.11203/jar.32.108 　

    ISSN： 0912-2834

  42. Causality of the Drought in the Southwestern United States Based on Observations Peer-reviewed

    Feng Zhang, Yadong Lei, Qiu-Run Yu, Klaus Fraedrich, Hironobu Iwabuchi

    JOURNAL OF CLIMATE　30　(13)　4891-4896　2017/07

    DOI： 10.1175/JCLI-D-16-0601.1 　

    ISSN： 0894-8755

    eISSN： 1520-0442

  43. Variational Iteration Method for Infrared Radiative Transfer in a Scattering Medium Peer-reviewed

    Feng Zhang, Yi-Ning Shi, Jiangnan Li, Kun Wu, Hironobu Iwabuchi

    JOURNAL OF THE ATMOSPHERIC SCIENCES　74　(2)　419-430　2017/02

    DOI： 10.1175/JAS-D-16-0172.1 　

    ISSN： 0022-4928

    eISSN： 1520-0469

  44. The spectral signature of cloud spatial structure in shortwave irradiance Peer-reviewed

    Shi Song, K. Sebastian Schmidt, Peter Pilewskie, Michael D. King, Andrew K. Heidinger, Andi Walther, Hironobu Iwabuchi, Gala Wind, Odele M. Coddington

    ATMOSPHERIC CHEMISTRY AND PHYSICS　16　(21)　13791-13806　2016/11

    DOI： 10.5194/acp-16-13791-2016 　

    ISSN： 1680-7316

    eISSN： 1680-7324

  45. Cloud Discrimination from Sky Images Using a Clear-Sky Index Peer-reviewed

    Masanori Saito, Hironobu Iwabuchi

    JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY　33　(8)　1583-1595　2016/08

    DOI： 10.1175/JTECH-D-15-0204.1 　

    ISSN： 0739-0572

    eISSN： 1520-0426

  46. Physical interpretation of gray cloud observed from airplanes Peer-reviewed

    Rintaro Okamura, Hironobu Iwabuchi

    APPLIED OPTICS　55　(21)　5761-5765　2016/07

    DOI： 10.1364/AO.55.005761 　

    ISSN： 1559-128X

    eISSN： 2155-3165

  47. Estimation of spectral distribution of sky radiance using a commercial digital camera Peer-reviewed

    Masanori Saito, Hironobu Iwabuchi, Isao Murata

    APPLIED OPTICS　55　(2)　415-424　2016/01

    DOI： 10.1364/AO.55.000415 　

    ISSN： 1559-128X

    eISSN： 2155-3165

  48. Photographic observation and optical simulation of a pollen corona display in Japan Peer-reviewed

    Souichiro Hioki, Hironobu Iwabuchi

    APPLIED OPTICS　54　(4)　B12-B21　2015/02

    DOI： 10.1364/AO.54.000B12 　

    ISSN： 1559-128X

    eISSN： 2155-3165

  49. Assessment of the accuracy of the conventional ray-tracing technique: Implications in remote sensing and radiative transfer involving ice clouds Peer-reviewed

    Lei Bi, Ping Yang, Chao Liu, Bingqi Yi, Bryan A. Baum, Bastiaan van Diedenhoven, Hironobu Iwabuchi

    JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER　146　158-174　2014/10

    DOI： 10.1016/j.jqsrt.2014.03.017 　

    ISSN： 0022-4073

    eISSN： 1879-1352

  50. 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

  51. Long-term MAX-DOAS network observations of NO2 in Russia and Asia (MADRAS) during the period 2007-2012: instrumentation, elucidation of climatology, and comparisons with OMI satellite observations and global model simulations Peer-reviewed

    Y. Kanaya, H. Irie, H. Takashima, H. Iwabuchi, H. Akimoto, K. Sudo, M. Gu, J. Chong, Y. J. Kim, H. Lee, A. Li, F. Si, J. Xu, P. -H. Xie, W. -Q. Liu, A. Dzhola, O. Postylyakov, V. Ivanov, E. Grechko, S. Terpugova, M. Panchenko

    ATMOSPHERIC CHEMISTRY AND PHYSICS　14　(15)　7909-7927　2014

    DOI： 10.5194/acp-14-7909-2014 　

    ISSN： 1680-7316

    eISSN： 1680-7324

  52. The Importance of Asian Dust Aerosols as CCN Estimated from Satellite Data Analysis

    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

  53. Impacts of major factors on downward longwave radiation

    Kyohei Yamada, Tadahiro Hayasaka, Hironobu Iwabuchi

    AIP Conference Proceedings　1531　608-611　2013

    DOI： 10.1063/1.4804843 　

    ISSN： 0094-243X 1551-7616

  54. 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

  55. Quantifying the relationship between the measurement precision and specifications of a UV/visible sensor on a geostationary satellite Peer-reviewed

    Hitoshi Irie, Hironobu Iwabuchi, Katsuyuki Noguchi, Yasuko Kasai, Kazuyuki Kita, Hajime Akimoto

    ADVANCES IN SPACE RESEARCH　49　(12)　1743-1749　2012/06

    DOI： 10.1016/j.asr.2012.03.012 　

    ISSN： 0273-1177

    eISSN： 1879-1948

  56. Retrieval of cirrus cloud radiative properties from brightness temperatures in infrared window bands

    H. Iwabuchi, S. Yamada

    REMOTE SENSING OF THE ATMOSPHERE, CLOUDS, AND PRECIPITATION IV　8523　85231E-2　2012

    DOI： 10.1117/12.977319 　

    ISSN： 0277-786X

  57. 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

  58. Effect of sastrugi on snow bidirectional reflectance and its application to MODIS data Peer-reviewed

    Katsuyuki Kuchiki, Teruo Aoki, Masashi Niwano, Hiroki Motoyoshi, Hironobu Iwabuchi

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES　116　D18110　2011/09

    DOI： 10.1029/2011JD016070 　

    ISSN： 2169-897X

    eISSN： 2169-8996

  59. Multiple-Scaling Method for Anisotropic Scattering And Its Applications to Radiance Calculations Peer-reviewed

    Hironobu Iwabuchi, Tsuneaki Suzuki

    CURRENT PROBLEMS IN ATMOSPHERIC RADIATION (IRS 2008)　1100　41-44　2009

    DOI： 10.1063/1.3117009 　

    ISSN： 0094-243X

  60. Dual-wavelength aerosol vertical profile measurements by MAX-DOAS at Tsukuba, Japan Peer-reviewed

    H. Irie, Y. Kanaya, H. Akimoto, H. Iwabuchi, A. Shimizu, K. Aoki

    ATMOSPHERIC CHEMISTRY AND PHYSICS　9　(8)　2741-2749　2009

    DOI： 10.5194/acp-9-2741-2009 　

    ISSN： 1680-7316

    eISSN： 1680-7324

  61. Photorealistic Visualization of clouds simulated by cloud-resolving model Invited

    H. Iwabuchi, Y. Wakazuki

    Bulletin of Visualization Society of Japan　28　(10)　162-167　2008

  62. First retrieval of tropospheric aerosol profiles using MAX-DOAS and comparison with lidar and sky radiometer measurements Peer-reviewed

    H. Irie, Y. Kanaya, H. Akimoto, H. Iwabuchi, A. Shimizu, K. Aoki

    ATMOSPHERIC CHEMISTRY AND PHYSICS　8　(2)　341-350　2008

    DOI： 10.5194/acp-8-341-2008 　

    ISSN： 1680-7316

    eISSN： 1680-7324

  63. Hemispherical-directional reflectance of rough snow surface

    Kuchiki Katsuyuki, Aoki Teruo, Tanaka Etsuko, Motoyoshi Hiroki, Iwabuchi Hironobu, Sugiura konosuke, Hachikubo Akihiro, Tanikawa Tomonori

    Preprints of the Annual Conference, Japanese Society of Snow and Ice　2007　52-52　2007

    Publisher: THE JAPANESE SOCIETY OF SNOW AND ICE

    DOI： 10.14850/jssi.2007.0.52.0 　

    ISSN： 0919-7346

  64. Comparison of box-air-mass-factors and radiances for Multiple-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) geometries calculated from different UV/visible radiative transfer models Peer-reviewed

    T. Wagner, J. P. Burrows, T. Deutschmann, B. Dix, C. von Friedeburg, U. Friess, F. Hendrick, K. -P. Heue, H. Irie, H. Iwabuchi, Y. Kanaya, J. Keller, C. A. McLinden, H. Oetjen, E. Palazzi, A. Petritoli, U. Platt, O. Postylyakov, J. Pukite, A. Richter, M. van Roozendael, A. Rozanov, V. Rozanov, R. Sinreich, S. Sanghavi, F. Wittrock

    ATMOSPHERIC CHEMISTRY AND PHYSICS　7　(7)　1809-1833　2007

    DOI： 10.5194/acp-7-1809-2007 　

    ISSN： 1680-7316

    eISSN： 1680-7324

  65. Validation experiment for satellite remote sensing and numerical models of ‘YAMASE’ clouds Peer-reviewed

    M. Kojima, S. Asano, H. Iwabuchi, S. Otake

    Current Problems in Atmospheric Radiation　383-386　2006

  66. Time-Variations of Optical and Microphysical Properties of Yamase Clouds Estimated from Shipboard Experiments and Satellite Remote Sensing in June 2003 Peer-reviewed

    Masaya Kojima, Shoji Asano, Hironobu Iwabuchi

    SOLA　2　45-48　2006

    DOI： 10.2151/sola.2006-012 　

    ISSN： 1349-6476

  67. An analysis of seasonal and decadal-long variations of aerosols over the Asian Pacific region using NOAA/AVHRR data Peer-reviewed

    A Sobajima, S Asano, H Iwabuchi

    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN　82　(5)　1459-1468　2004/10

    DOI： 10.2151/jmsj.2004.1459 　

    ISSN： 0026-1165

  68. Revised parameterization to predict cloud droplet concentration and a retrieval method to predict CCN concentration-supplement Peer-reviewed

    N Kuba, H Iwabuchi

    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN　81　(6)　1485-1487　2003/12

    DOI： 10.2151/jmsj.81.1485 　

    ISSN： 0026-1165

  69. Calibration of the visible and near-infrared channels of NOAA-11 and-14 AVHRRs by using reflections from molecular atmosphere and stratus cloud Peer-reviewed

    H Iwabuchi

    INTERNATIONAL JOURNAL OF REMOTE SENSING　24　(24)　5367-5378　2003/12

    DOI： 10.1080/0143116031000102403 　

    ISSN： 0143-1161

  70. 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

  71. Monitoring of forest fires in Far East Russia Peer-reviewed

    K Kawano, H Iwabuchi, J Kudoh

    IGARSS 2002: IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM AND 24TH CANADIAN SYMPOSIUM ON REMOTE SENSING, VOLS I-VI, PROCEEDINGS　2060-2062　2002

  72. Remote sensing of aerosol properties using NOAA AVHRR data over the Northeastern Asian seas: Development of retrieval system Peer-reviewed

    H. Iwabuchi, A. Sobajima, J. Kudoh, S. Asano

    Northeast Asian Studies　6　143-156　2002

    Publisher:

    ISSN： 1343-9332

  73. 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

  74. Effect of cloud condensation nuclei on the optical properties of a layer cloud: Numerical simulation with cloud-microphysical model Peer-reviewed

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

    Present and Future of Modeling Global Environmental Change: Toward Integrated Modeling, Terra Scientific Company, Tokyo, Japan　2001

  75. 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

  76. 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

  77. 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

Show all ︎Show first 5

Misc. 50

  1. 畳み込みニューラルネットワークを利用したデジタルカメラ画像からの雲物理量推定手法の開発

    増田 涼佑, 岩渕 弘信, Sebastian Schmidt, 工藤 玲

    第81回全国大会講演論文集　2019　(1)　295-296　2019/02/28

    More details Close

    本稿では、デジタルカメラで撮影した全天画像から画像ピクセル毎に雲光学的厚さを推定する手法を提案する。雲光学的厚さは、太陽光発電量を正確に推定するために必要な雲パラメータの一つであり、本稿では、セマンティックセグメンテーションの技術を応用して推定を試みた。学習データはシミュレーションにより作成し、推定には撮影した全天画像を用いた。現状では、学習データに含まれている種類の雲に対しては、定性的には精度よく推定出来ていると考えられるが、含まれていない種類の雲やシミュレーションで考慮していないカメラのフレア現象を含んだ画像に対しては、推定が困難であることから、学習データの補充が必要であると考えられる。

  2. スカイラジオメータによる雲の微物理・光学特性のリモートセンシング手法の開発

    工藤玲, 岩渕弘信, 鷹野敏明, 入江仁士, DAMIANI Alessandro, KHATRI Pradeep

    日本気象学会大会講演予稿集(CD-ROM)　(115)　53　2019

  3. A104 ひまわり8号のデータを用いた氷晶雲の解析(次期静止気象衛星「ひまわり8号」がもたらす未来の気象学,専門分科会)

    岩渕 弘信, 所 悠香, 齊藤 雅典, Putri Nurfiena Sagita, 片桐 秀一郎, 関口 美保

    大会講演予講集　107　50-50　2015

    Publisher: 日本気象学会

  4. Cloud optical properties from various ground and satellite instruments evaluated during an intensive campaign

    DAMIANI Alessandro, IRIE Hitoshi, HORIO Takashi, TAKAMURA Tamio, KUDO Rei, KHATRI Pradeep, IWABUCHI Hironobu, MASUDA Ryosuke, NAGAO Takashi M

    日本地球惑星科学連合大会予稿集(Web)　2019　ROMBUNNO.ACG34‐10 (WEB ONLY)　2019

  5. P350 ひまわり8号のデータを用いた氷晶雲の解析(2)(ポスター・セッション)

    所 悠香, 岩渕 弘信, 齊藤 雅典, Putri Nurfiena Sagita, 片桐 秀一郎, 関口 美保

    大会講演予講集　108　430-430　2015

    Publisher: 日本気象学会

  6. 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

  7. C212 全天カメラによる日射の輝度分布測定(大気放射,一般口頭発表)

    工藤 玲, 岩渕 弘信

    大会講演予講集　108　319-319　2015

    Publisher: 日本気象学会

  8. Radiative effects of inhomogeneous clouds

    Hironobu Iwabuchi

    Low Temperature Science　72　151-158　2014/03/31

    Publisher: Hokkaido University

  9. 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

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

  21. 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

  22. 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

  23. 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

  24. D364 静止大気環境衛星による大気汚染物質の観測 : 紫外可視域のシミュレーション(観測手法)

    入江 仁士, 岩渕 弘信

    大会講演予講集　96　326-326　2009

    Publisher: 日本気象学会

  25. 南極域の衛星リモートセンシングに対するサスツルギの効果

    朽木勝幸, 青木輝夫, 田中悦子, 本吉弘岐, 岩渕弘信

    日本気象学会大会講演予稿集　(93)　2008

  26. MODISデータを用いた南極点における氷床表面ラフネスの推定

    朽木勝幸, 青木輝夫, 庭野匡思, 本吉弘岐, 岩渕弘信

    日本気象学会大会講演予稿集　(94)　2008

  27. 双方向反射率に対する地表面ラフネスの効果

    朽木勝幸, 青木輝夫, 田中悦子, 本吉弘岐, 岩渕弘信

    日本気象学会大会講演予稿集　(91)　2007

  28. D157 MAX-DOAS法による対流圏NO_2とエアロゾルの同時観測(エアロゾル)

    入江 仁士, 金谷 有剛, 秋元 肇, 岩渕 弘信

    大会講演予講集　90　218-218　2006

    Publisher: 日本気象学会

  29. モンテカルロ法を用いた曇天大気および植生キャノピーの放射伝達のモデル化, 海洋研究開発機構

    岩渕弘信

    地球環境フロンティア研究センターTechnical Report　2006

  30. P117 2波長偏光ライダーと赤外放射温度計データによる熱帯における巻雲微物理特性の導出

    大竹 慎一, 岡本 創, 浅野 正二, 杉本 伸夫, 西澤 智明, 岩渕 弘信

    大会講演予講集　88　314-314　2005

    Publisher: 日本気象学会

  31. P330 NOAA-AVHRRデータを用いたヤマセ雲の放射変化

    小嶋 正也, 浅野 正二, 岩渕 弘信

    大会講演予講集　87　437-437　2005

    Publisher: 日本気象学会

  32. C354 MAX-DOAS装置による対流圏NO_2の観測(2) : 放射伝達モデルを用いたAMFの計算(観測手法)

    岩渕 弘信, 入江 仁士, 金谷 有剛, 秋元 肇

    大会講演予講集　88　217-217　2005

    Publisher: 日本気象学会

  33. C353 MAX-DOAS装置による対流圏NO_2の観測(1) : カラム量導出アルゴリズムの開発(観測手法)

    入江 仁士, 金谷 有剛, 秋元 肇, 岩渕 弘信

    大会講演予講集　88　216-216　2005

    Publisher: 日本気象学会

  34. A173 NOAA-AVHRRデータ解析による下層雲の雲物理特性(降水システムII)

    小嶋 正也, 浅野 正二, 岩渕 弘信

    大会講演予講集　86　69-69　2004

    Publisher: 日本気象学会

  35. P250 NOAA-AVHRRデータ解析によるヤマセ雲の雲物理構造

    小嶋 正也, 浅野 正二, 岩渕 弘信

    大会講演予講集　85　354-354　2004

    Publisher: 日本気象学会

  36. Camera visualization of cloud fields simulated by non-hydrostatic atmospheric models

    H Iwabuchi, K Tsuboki

    JOURNAL OF VISUALIZATION　7　(4)　272-272　2004

    ISSN： 1343-8875

  37. C155 非降水性の層雲の光学的性質と雲粒数密度のパラメタリゼーションおよびCCN数密度のリトリーバル手法(2)(雲微物理特性と放射収支)

    久芳 奈遠美, 岩渕 弘信, 藤吉 康志

    大会講演予講集　83　145-145　2003

    Publisher: 日本気象学会

  38. NOAA/AVHRRを用いた東アジア海域におけるエアロゾル変動の長期解析

    傍島 明, 岩渕 弘信, 浅野 正二

    大会講演予講集　82　111-111　2002/10/09

  39. 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

  40. NOAA-AVHRRを用いた東アジア海域におけるエアロゾル変動の解析

    傍島 明, 岩渕 弘信, 浅野 正二

    大会講演予講集　80　241-241　2001/10/10

  41. 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

  42. 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

  43. 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

  44. 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

  45. 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

  46. 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

  47. 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

  48. 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

  49. 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

  50. 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

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Books and Other Publications 8

  1. Recent Advances in Radiative Transfer Calculations and Their Applications in the Meteorology and Climate Studies

    T. Hayasaka, H. Iwabuchi

    日本気象学会　2011/11

  2. Modeling of radiative transfer in cloudy atmospheres and plant canopies using Monte Carlo methods

    H. Iwabuchi, H. Kobayashi

    FRCGC　2008

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    FRCGC Technical Report No.8

  3. Light Scattering Reviews Vol. 2

    H. Iwabuchi

    Springer, Berlin, Heidelberg, New York　2006

  4. 低温環境の科学事典

    岩渕弘信

    朝倉書店　2016/07/25

    ISBN: 9784254161281

  5. 低温科学 Vol.72 雲とエアロゾルをつなぐ観測とモデリング

    岩渕弘信

    北海道大学低温科学研究所　2014/03/31

  6. 図説 地球環境の事典

    岩渕弘信

    朝倉書店　2013/09/25

    ISBN: 9784254160598

  7. Radiative Transfer in Three-Dimensional Atmosphere

    H. Iwabuchi, H. Ishida, A. Sakurai

    Meteorological Society of Japan　2011/11

  8. Modeling of radiative transfer in cloudy atmospheres and plant canopies using Monte Carlo methods

    H. Iwabuchi, H. Kobayashi

    FRCGC　2006

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    FRCGC Technical Report No.7

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Presentations 79

  1. Delving deeper into the spatiotemporal features of cloud and meteorological state imprinted on geostationary satellite images

    H. Iwabuchi, Xinyue Wang, Takaya Yamashita

  2. Cloud inhomogeneity and three-dimensional radiative transfer effects evaluated by a deep convolutional neural network

    H. Iwabuchi, Hana Kato, K. Sebastian Schmid

    International Radiation Symposium 2022

  3. Estimation of cloud and meteorological state from satellite image by deep neural network

    Iwabuchi, H, X. Wang, H. Kato, T. Yamashita

    JpGU Annual Meeting 2021

  4. Remote sensing of cloud by deep neural network: Training strategies Invited

    H. Iwabuchi, H. Kato, X. Wang, T. Yamashita, R. Kudo, K. S. Schmid

    AGU Fall Meeting 2020　2020/12

  5. Robustness of optical remote sensing of cloud by deep convolutional neural network using multi-channel imaging spectroradiometer Invited

    H. Iwabuchi, H. Kato, A. Masuda

    JpGU-AGU Joint Meeting 2020

  6. Deep learning of cloud structure and three-dimensional radiative transfer for cloud remote sensing

    Iwabuchi H, R. Masuda, S. Schmidt, A. Damiani, R. Kudo

    AGU Fall meeting 2019　2019/12/11

  7. 三次元大気放射伝達モデルと深層学習を用いた地上からの雲のリモートセンシング手法の開発

    岩渕弘信, 増田涼佑, K. Sebastian Schmidt, Alessandro Damiani

    日本気象学会2019 年度秋季大会　2019/10/28

  8. Remote sensing of cloud using deep learning and a three-dimensional radiative transfer model

    JpGU Meeting 2019　2019/05/30

  9. Development of an algorithm for three-dimensional cloud from multispectral and multidirectional measurement by SGLI and validation of cloud products

    H. Iwabuchi

    The Joint Meeting of JAXA Earth Observation Missions FY2022　2022/11/07

  10. Remote sensing of three-dimensional clouds using multispectral measurements by SGLI

    Iwabuchi, H, H. Kato

    The Joint PI Meeting of JAXA Earth Observation Mission　2022/01/18

  11. Remote sensing of three-dimensional clouds using multispectral measurements by SGLI

    Hironobu Iwabuchi, Hana Kato

    JAXA PI Meeting　2021/01/21

  12. MJOに伴う海大陸西側における対流雲の変動

    佐藤拓実, 岩渕弘信

    日本気象学会東北支部講演会　2020/12/07

  13. Remote sensing of three-dimensional clouds using multidirectional and multispectral measurements by SGLI

    Iwabuchi, H

    Joint PI Meeting of Global Environment Observation Mission FY2019　2020/01/21

  14. Wintertime Modulation of the Local Cloud and Diagnostic Fields by the Hadley Cell Subsiding Boundary over the Western North Pacific

    Wang, X, H. Iwabuchi

    AGU Fall meeting 2019　2019/12/14

  15. 夏季黒潮域における降水システムの日周期

    山下尭也, 岩渕弘信, 岩崎俊樹

    2019年度日本気象学会東北支部気象研究会　2019/12/02

  16. 海大陸周辺に発生する対流雲に対するエアロゾルの影響の定量的評価

    大芦宏彰, 岩渕弘信, Pradeep Khatri

    2019年度日本気象学会東北支部気象研究会　2019/12/02

  17. 熱帯の対流雲に対するエアロゾルの影響の解析

    大芦宏彰, 岩渕弘信, Pradeep Khatri

    日本気象学会2019 年度秋季大会　2019/10/30

  18. Cloud retrieval from surface using zenith radiances: Method and satellite product validation

    Pradeep Khatri, Hironobu Iwabuchi, Tadahiro Hayasaka, Hitoshi Irie, Tamio Takamura, Akihiro Yamazaki, Alessandro Damiani

    AOGS 16th Annual Meeting　2019/07/28

  19. Cloud optical depth from geostationary and low Earth orbit satellites evaluated during an intensive campaign

    Alessandro DAMIANI, Hitoshi IRIE, Takashi HORIO, Tamio TAKAMURA, Rei KUDO, Pradeep KHATRI, Hironobu IWABUCHI, Ryosuke MASUDA, Takashi M. NAGAO

    AOGS 16th Annual Meeting　2019/07/28

  20. Wintertime Modulation of the Local Cloud and Diagnostic Fields by the Hadley Cell Subsiding Boundary over the Western North Pacific

    Xinyue Wang, Hironobu Iwabuchi

    JpGU Meeting 2019　2019/05/28

  21. 日本近海におけるメソ対流系の日変化に関する事例解析

    山下尭也, 岩渕弘信

    日本気象学会2019 年度春季大会　2019/05/15

  22. 畳込みニューラルネットワークを利用したデジタルカメラ画像からの雲物理量推定手法の開発

    増田 涼佑, 岩渕 弘信, K. Sebastian Schmidt, 工藤 玲

    情報処理学会第81回全国大会　2019/04/14

  23. Cloud Retrieval from SKYNET Sky Radiomete International-presentation

    Pradeep Khatri, Hironobu Iwabuchi, Tadahiro Hayasaka, Hitoshi Irie, Tamio Takamura, Akihiro Yamazaki, Allesandro Damiani

    5th International SKYNET Workshop　2019/02/13

  24. Relationships between convective cloud and aerosol inferred from multi-satellite observation data International-presentation

    Iwabuchi, H, P. Khatri

    Joint PI Meeting of Global Environment Observation Mission FY2018　2019/01/21

  25. Deep-learning cloud retrieval based on three-dimensional radiative transfer International-presentation Invited

    H. Iwabuchi

    Seminar at the Goddard Space Flight Center　2018/12/17

  26. Diurnal cycle of deep convective cloud system over the Indo-Pacific warm pool region International-presentation

    Iwabuchi, H, S. Sakai

    AGU Fall Meeting　2018/12/10

  27. Himawari-8/AHIを用いた雲の光学的厚さと雲頂高度の簡易型導出手法の開発

    酒井 省吾, 岩渕 弘信

    日本気象学会2018年度秋季大会　2018/10/29

  28. Ice cloud vertical profiles and their roles on cloud retrievals using thermal infrared measurements

    Pradeep Khatri, Hironobu Iwabuchi, Masanori Saito

    日本気象学会2018年度秋季大会　2018/10/29

  29. 深層学習とデジタルカメラを利用した雲光学的厚さ推定手法の開発

    増田涼佑, 岩渕弘信, 工藤玲

    日本気象学会2018年度秋季大会　2018/10/29

  30. 日射の輝度分布測定のための全天カメラの開発

    工藤玲, 岩渕弘信, 鷹野敏明, 居島修, 高野松美

    日本気象学会2018年度秋季大会　2018/10/29

  31. 液滴を陽に考慮した境界層雲の3次元放射伝達モデルの開発

    野田暁, 松田景吾, 岩渕弘信, 大西領, 宮本佳明

    日本気象学会2018年度秋季大会　2018/10/29

  32. Modification of the retrieval tool JACOSPAR for the Martian limb observations International-presentation

    M. Toyooka, H. Iwabuchi, S. Aoki, A. Mahieux, H. Nakagawa, Y. Kasaba

    European Planetary Science Congress 2018　2018/09/16

  33. Deep-learning cloud retrieval based on three-dimensional radiative transfer International-presentation Invited

    Iwabuchi, H, R. Masuda, R. Kudo

    1st International Workshop on Cloud Remote Sensing, Atmosphere Radiation and Renewal Energy Application (CARE-2018)　2018/08/06

  34. Modification of the retrieval tool JACOSPAR for the Martian limb observations International-presentation

    Masashi Toyooka, Hironobu Iwabuchi, Shohei Aoki, Arnaud Mahieux, Hiromu Nakagawa, Yasumasa Kasaba

    JpGU Meeting　2018/05/16

  35. Retrieval of gases and aerosols vertical profiles considering mul-tiple scattering from OMEGA/MEx limb observations International-presentation

    A. Mahieux, S. Aoki, M. Toyooka, H. Nakagawa, H. Iwabuchi, Y. Kasaba, G. Sindoni, A. Geminale, F. Oliva, E. D’Aversa, F. Altieri, G. Bellucci, A.C. Vandaele, B. Gondet, J.-P. Bibring

    Mars Scientific Workshop: “From Mars Express to ExoMars”　2018/02/27

  36. Modification of the retrieval tool JACOSPAR for the Martian limb and solar occultation observations International-presentation

    M. Toyooka, H. Iwabuchi, S. Aoki, A. Mahieux, H. Nakagawa, Y. Kasaba

    Mars Scientific Workshop: “From Mars Express to ExoMars”　2018/02

  37. Relationship between convective cloud lifecycle and aerosol inferred from multi-satellite observation data International-presentation

    Hironobu Iwabuchi, Pradeep Khatri

    Joint PI Meeting of Global Environment Observation Mission FY2017　2018/01/22

  38. Retrieval of gas and aerosols vertical profiles by means of limb observations considering multiple scattering of the PFS/MEx and NOMAD/ExoMars instruments International-presentation

    A. Mahieux, G. Bellucci, S. Aoki, P. Wolkenberg, H. Iwabuchi, Y. Kasaba, H. Nakagawa, M. Giuranna, A.C. Vandaele

    ixth International Workshop on the Mars Atmosphere: Modelling and Observations　2018/01/17

  39. Parameterization of cirrus cloud vertical profiles and geometrical thickness using CALIPSO and CLOUDSAT data International-presentation

    Pradeep Khatri, Hironobu Iwabuchi, Masanori Saito

    AGU Fall Meeting 2017　2017/12/11

  40. Physical Mechanism, Spectral Detection, and Potential Mitigation of 3D Cloud Effects on OCO-2 Radiances and Retrievals International-presentation

    K. Sebastian Schmidt, Steven Massie, Hironobu Iwabuchi, Sabrina Cochrane, Hong Chen

    AGU Fall Meeting 2017　2017/12/11

  41. Direct Aerosol Radiative Effects and Heating Rates: Results from the 2016 and 2017 ORACLES Field Campaigns International-presentation

    Sabrina P. Cochrane, K. Sebastian Schmidt, Hong Chen, Peter Pilewskie, Jens Redemann, Samuel LeBlanc, Steve Platnick, Kerry Meyer, John Hair, Rich Ferrare, Sharon Burton, Chris Hostetler, Sharon Burton, Hironobu Iwabuchi

    AGU Fall Meeting 2017　2017/12/11

  42. n improved cloud properties retrieval method from the sky radiometer

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

    日本気象学会2017年秋期大会　2017/10/30

  43. An improved cloud properties retrieval method from the sky radiometer

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

    日本気象学会2017年秋期大会　2017/10/30

  44. 機械学習を用いた不均質雲の光学的厚さと雲粒有効半径の推定

    岩渕弘信, 岡村凜太郎, K Sebastian Schmidt

    日本気象学会2017年度秋季大会　2017/10/30

  45. Evaluation of JACOSPAR applied to OMEGA / MEx : a fully spherical radiative transfer code with multi-scattering by aerosols International-presentation

    Masashi Toyooka, Arnaud Mahieux, Shohei Aoki, Hiromu Nakagawa, Yasumasa Kasaba, Hironobu Iwabuchi

    Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS)　2017/10/15

  46. Seasonal and interannual variations and decadal change of tropical high cloud

    Hironobu Iwabuchi

    Workshop on Atmospheric Radiation and Remote Sensing 2017　2017/09/13

  47. Impact of delta-four-stream radiative transfer scheme on cloud radiative effects

    Feng Zhang, Quan Yang, Hironobu Iwabuchi

    Workshop on Atmospheric Radiation and Remote Sensing 2017　2017/09/13

  48. Cloud evolution observed by new-generation geostationary satellite International-presentation Invited

    Iwabuchi, H

    International Workshop on Atmospheric Scattering, Radiation, and Remote Sensing　2017/06/26

  49. A new radiative transfer method for vertical internal inhomogeneity in solar radiation International-presentation

    Feng Zhang, Jia-Ren Yan, Jiangnan Li, Kun Wu, Hironobu Iwabuchi

    Workshop on Atmospheric Scattering, Radiation, and Remote Sensing　2017/06/26

  50. CALIOP?IIR複合観測から得られた巻雲の氷粒子形状及びライダー比の地域・温度依存性

    齊藤雅典, 岩渕弘信, Ping Yang

    日本気象学会2017年春期大会　2017/05/25

  51. CALIPSO衛星観測から巻雲の光学・微物理特性と氷粒子形状を推定する手法の開発と検証

    齊藤雅典, 岩渕弘信, Ping Yang, Michael D. King, 関口美保

    本気象学会2017年春期大会　2017/05/25

  52. モンテカルロ3次元放射伝達モデルによる多波長同時計算手法

    岩渕弘信, 岡村凜太郎

    日本気象学会2017年春期大会　2017/05/25

  53. Retrieval of optical thickness and effective droplet radius of inhomogeneous clouds using a deep neural network International-presentation

    Iwabuchi, H, R. Okamura, K. S. Schmidt

    JpGU-AGU Joint Meeting 2017　2017/05/21

  54. Variational Iteration Method for Infrared Radiative Transfer in a Scattering Medium International-presentation

    Feng Zhang, Yi-Ning Shi, Jiangnan Li, Kun Wu, Hironobu Iwabuchi

    JpGU-AGU Joint Meeting 2017　2017/05/21

  55. Validation of Himawari-8 and MODIS observed water cloud properties using ground-based observation data International-presentation

    Khatri, P, T. Hayasaka, H. Iwabuchi, H. Irie, K. Kawamoto

    JpGU-AGU Joint Meeting 2017　2017/05/20

  56. Ice particle morphology and microphysical properties of transparent cirrus clouds inferred from CALIOP–IIR measurements International-presentation

    Saito, M, H. Iwabuchi, P. Yang, M. D. King, G. Tang, M. Sekiguchi

    JpGU-AGU Joint Meeting 2017　2017/05/20

  57. Cloud parameters from zenith transmittances measured by sky radiometer at surface: Method development and satellite product validation International-presentation

    Khatri, P, T. Hayasaka, H. Iwabuchi, T. Takamura, H. Irie, T. Nakajima, H. Letu, Q. Kai

    European Geosciences Union General Assembly 2017　2017/04/23

  58. Microphysical properties and ice particle morphology of cirrus clouds inferred from combined CALIOP-IIR measurements International-presentation

    Masanori Saito, Hironobu Iwabuchi, Ping Yang, Guanglin Tang, Miho Sekiguchi

    AGU Fall Meeting　2016/12/12

  59. Separating Aerosol and Cloud Radiative Effects: Sampling Techniques and Preliminary Results from the 2016 ORACLES Field Campaign International-presentation

    Sabrina P. Cochrane, K. Sebastian Schmidt, Hong Chen, Peter Pilewskie, Jens Redemann, Samuel LeBlanc, Graham Feingold, Steve Platnick, Kerry Meyer, John Hair, Rich Ferrare, Hironobu Iwabuchi

    AGU Fall Meeting　2016/12/12

  60. Satellite observation of Earth’s atmosphere: Lessons learned from frequent multispectral observations by a new-generation geostationary satellite International-presentation

    Iwabuchi, H

    MMX mission remote sensing science meeting　2016/11/29

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    本人

  61. モンテカルロ大気放射伝達モデルを用いた積雲下の3次元放射効果の解析

    岩渕弘信

    大気放射と衛星リモートセンシングに関するワークショップ　2016/11/02

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    本人

  62. モンテカルロ3次元放射伝達モデルのための最大消散係数法を用いた複数波長の同時計算手法の開発

    岡村 凜太郎, 岩渕 弘信

    大気放射と衛星リモートセンシングに関するワークショップ　2016/11/02

  63. SCALE-LESデータを用いたMODISセンサに対する雲の不均質性の影響の解明

    岡村 凜太郎, 岩渕 弘信

    大気放射と衛星リモートセンシングに関するワークショップ　2016/11/02

  64. ひまわり8号の高頻度観測データを用いた氷雲のライフサイクルの解析

    岩渕 弘信, 所 悠香, 齊藤 雅典, Nurfiena Sagita Putri

    日本気象学会2016年秋期大会　2016/10/26

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  65. SCALE-LES データを用いた MODIS の雲物理量の推定における雲の不均質性の影響の解明

    岡村 凜太郎, 岩渕 弘信

    日本気象学会2016年秋期大会　2016/10/26

  66. Angular distribution of downward spectral radiance under inhomogeneous cloud International-presentation

    Iwabuchi, H

    International Conference on Light and Color in Nature　2016/05/31

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  67. Physical interpretation of gray cloud seen from airplane International-presentation

    Okamura, R, H. Iwabuchi

    International Conference on Light and Color in Nature　2016/05/31

  68. ひまわり8号の高頻度観測データを用いた雲の解析，，国立オリンピック記念青少年総合センター，東京，May 18-21, 2016

    岩渕 弘信, 所 悠香, 齊藤 雅典, Nurfiena Sagita Putri, 片桐 秀一郎, 関口 美保

    日本気象学会2016年春期大会　2016/05/18

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  69. 3D Cloud Effects in OCO-2 Observations – Evidence and Mitigation International-presentation

    Sebastian Schmidt, Steven Massie, Hironobu Iwabuchi, Rintaro Okamura, David Crisp

    EGU General Assembly 2016　2016/04/17

  70. Multilayer cloud detection and retrieval of cloud physical and optical properties from thermal infrared measurements International-presentation

    Iwabuchi, H, Y. Tokoro, M. Saito, N. S. Putri, S. Katagiri, M. Sekiguchi

    AGU Fall Meeting　2015/12/14

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  71. Retrieval of multilayer cloud physical and optical properties from infrared measurements International-presentation

    Iwabuchi, H, Y. Tokoro, M. Saito, N. S. Putri, S. Katagiri, M. Sekiguchi

    The Sixth Asia/Oceania Meteorological Satellite Users' Conference (AOMSUC)　2015/11/09

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  72. Ice cloud analysis using Himawari-8 data International-presentation Invited

    Iwabuchi, H, Y. Tokoro, M. Saito, N. S. Putri, S. Katagiri, M. Sekiguchi

    Japan Geoscience Union Meeting 2015　2015/05/24

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  73. ひまわり8号のデータを用いた氷晶雲の解析

    岩渕 弘信, 所 悠香, 齊藤 雅典, Nurfiena Sagita Putri, 片桐 秀一郎, 関口 美保

    日本気象学会2015年春期大会　2015/05/21

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  74. Cirrus cloud properties inferred from multispectral imager and lidar measurements International-presentation

    Iwabuchi, H, S. Katagiri

    AGU Fall Meeting　2014/12/15

  75. Cirrus Cloud Properties Inferred from Infrared Imager and Lidar Measurements International-presentation

    Iwabuchi, H, S. Katagiri, S. Hioki

    Asia Oceania Geoscience Society 11th Annual Meeting (AOGS2014)　2014/07/28

  76. Cirrus Cloud Properties Inferred from MODIS Measurements International-presentation

    Iwabuchi, H, S. Yamada, S. Katagiri

    International Conference on Clouds and Aerosol　2014/06/16

  77. MAX-DOAS network observations of NO2 and aerosols over Japan, China, Korea, and Russia International-presentation

    Y. Kanaya, H. Irie, H. Takashima, K. Sudo, H. Iwabuchi, H. Akimoto, M. Gu, J. Chong, Y.J. Kim, H. Lee, J. Xu, A. Li, F. Si, P. Xie, W. Liu, A. Dzhola, E. Grechko, M. Sviridenkov, V. Ivanov, S. A. Terpugova, M. V. Panchenko

    5th International DOAS Workshop　2011/07/13

  78. Quantifying the relationship between the measurement precision and specifications of a UV/visible sensor on a geostationary satellite International-presentation

    H. Irie, H. Iwabuchi, K. Noguchi, Y. Kasai, K. Kita, H. Akimoto

    5th International DOAS Workshop　2011/07/13

  79. Retrieval of snow surface roughness from MODIS: Case study for sastrugi over the South Pole International-presentation

    K. Kuchiki, T. Aoki, M. Niwano, H. Motoyoshi, H. Iwabuchi

    IUGG 2011　2011/06/27

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Research Projects 9

  1. Structural understanding of 100 m-scale meteorology opened up by horizontal transport of radiation

    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: Tokyo University of Marine Science and Technology

    2025/04/01 - 2029/03/31

  2. 雲・エアロゾルを介した中緯度大気海洋相互作用

    小池 真, 鈴木 健太郎, 茂木 信宏, 川合 秀明, 松井 仁志, 金谷 有剛, 當房 豊, 岩渕 弘信

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 新学術領域研究(研究領域提案型)

    Institution: 東京大学

    2019/06/28 - 2024/03/31

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    本計画研究の目的は、西部北太平洋などの下層雲の変動を、海表面温度（SST）を含む気象場および海洋からのエアロゾル供給などの観点から、他の海域の下層雲との対比を含めて明らかにすることである。 観測研究では、2022年夏の航空機観測・船舶観測で用いるためのエアロゾル観測装置を開発・整備した。特に自己参照干渉法を用いた複素散乱振幅測定法（SPES法）の理論的枠組みの一般化に成功するなどの成果が得られた。また海洋地球研究船「みらい」にて2021年2－3月に西部北太平洋におけるエアロゾル微物理パラメータと海塩由来塩素の同時計測を実施した。現在までに得られた洋上・離島での観測値を解析し、アジア 太平洋地域の データ整理に着手した。 数値モデル研究では、海上下層雲と気候モデルにおけるそのパラメタリゼーションについて、専門外の研究者・学生のために基礎知識をレビュー論文としてわかりやすくまとめた。下層雲が亜熱帯高気圧にどのように影響するかを調査し、従来言われてきた下層雲の雲頂冷却が亜熱帯高気圧を強化するという説は、最新のモデルでは支持されないことを示した。気象庁の現業で使用される予定の次期季節予報モデルにおける層積雲スキームの改良により、海面水温と下向き短波放射の関係（フィードバック）が大きく改善されることを示した。また数値気候モデルMIROCにおいて、サブ格子スケールの雲の変動を考慮した補正を降雨過程に導入し、その放射影響を評価した。その結果、世界のモデルに共通する系統誤差の一部を軽減することができた。さらに、全球気候－エアロゾルモデルCAM-ATRASを用いて、東アジア域における人為起源エアロゾルとその放出量の近年（2008年から2016年までの変化）および将来（2030年と2050年まで）の変化が、北太平洋域の雲の放射収支に大きな影響を及ぼすことを示した。

  3. Variations and evolutions of Martian atmospheric environment investigated in the collaboration with European and US missions

    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: Tohoku University

    2019/04/01 - 2024/03/31

  4. Studies on the pysical and optical properties, and the 3-D radiatvei effect of the broken clouds

    KUDO Rei

    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: Japan, Meteorological Research Institute

    2017/04/01 - 2020/03/31

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    In this study, we developed a new ground-based remote sensing system for clouds to study the three dimensional radiative effect of heterogeneous clouds on the surface solar radiation. The remote sensing system is consists of a new whole sky camera and new retrieval techniques to retrieve the cloud optical depth distribution based on the three dimensional radiative transfer model. The intercomparison of the cloud optical depth during the intensive observation experiment showed that the cloud optical depth retrieved by our remote sensing system was consistent with those of the other ground- and satellite-based remote sensing methods. The three dimensional radiative effect was investigated by using the observation and simulation data. Newly, we showed that the illumination and shadowing effects of the cloud on the sun side and opposite side affect the spectral dependency of radiances, and the radiances become more colorful.

  5. ひまわり８号の観測を用いた雲降水系の時間発展の研究

    岩渕 弘信, ZHANG FENG

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東北大学

    2016/07/27 - 2018/03/31

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    雲と降水の微物理過程を含めた雲降水系の発展の理解は，気象・気候モデルにおける雲降水の微物理のパラメータ化の重要な鍵となっている。本研究では，静止気象衛星による可視から赤外の観測を用いて，強い雨をもたらす深い対流系のライフサイクルに関する研究を行っている。静止気象衛星ひまわり８号による可視から赤外のデータを用いて雲の特性を推定する手法を開発するため，太陽放射および赤外放射用の高速かつ高精度な放射伝達モデルの開発に取り組んだ。雲のリモートセンシングにおいて雲の鉛直不均質性を考慮することが重要であることがわかったため，雲内の鉛直不均一性を考慮した新しい放射伝達解法を太陽放射および赤外放射用それぞれについて提案した。計算時間は従来の手法と大きくは違わないため，高速かつ高精度の計算が可能となった。衛星データ解析により，氷雲の鉛直不均質性を経験的にモデル化し，雲解析システムに組み込んだ。これを用いて「ひまわり8号」の高頻度観測データの解析を行った。熱帯域の典型的日変化として，陸上では12地方太陽時(LT)から対流雲の発達が始まり，18時LTに最も発達し，15～24 LT頃に巻層雲や巻雲などの上層雲が広がるということがわかった。 <BR> 研究成果は投稿論文２本に公表したほか，現在査読中の論文が１本あり，大きな研究実績をあげられた。開発した計算モデルを雲解析アルゴリズムに組み込む事で，対流雲のライフサイクルを捉える研究に発展するものと期待される。

  6. Quantification of global cloud-resolving radiative energy budget using multi-scale atmospheric radiation model

    Ota Yoshifumi

    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: Japan, Meteorological Research Institute

    2015/04/01 - 2018/03/31

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    Three-dimensional atmospheric radiation models were developed on the basis of Monte Carlo method and explicit solution method. The three-dimensional radiation models were applied to the latest cloud-resolving meteorological simulation data. As a result, in the case of open cell cloud and closed cell cloud, differences in solar radiative heating rate at 1-6 K/hr were shown as a function of spatial grid sizes between 100m and 1km. On the other hand, domain-average of the solar radiative heating rate did not depend on spatial resolution, and there were no significant thermo-dynamical differences in domain-average values. Therefore, it is shown that cloud-radiation interaction at cloud-resolving scale might have different property depending on the spatial resolution.

  7. 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.

  8. Evalation of global cloud-resolving radiation budget using three dimensional atmospheric radiation model

    OTA Yoshifumi, ISHIDA Haruma, IWABUCHI Hironobu, SAKURAI Atsushi, SEKIGUCHI Miho

    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: Japan Agency for Marine-Earth Science and Technology

    2012/04/01 - 2015/03/31

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    Three-dimensional atmospheric radiation model has been developed on the basis of the Monte Carlo method and the explicit solution method. The broad-band optical models such as cloud scattering and gaseous absorption have been also developed in order to apply the radiation model to the latest cloud-resolving meteorological simulation data. As a result, in the case of open cell clouds, the spatially-localized differences at a few hundred W/m2 in the solar radiation flux have been shown as a function of spatial grid size. On the other hand, the differences in heating rate of the solar radiation have not depended largely on the spatial grid size and have been locally several kelvins per day. The results indicate that the three-dimensional effect of solar radiation in the local air mass does not affect largely on the cloud evolution.

  9. 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.

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