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Isao Murata

Section

Graduate School of Environmental Studies

Job title

Associate Professor

Degree

博士（理学）（東京大学）
理学修士（東京大学）

researchmap

https://researchmap.jp/read0052302

J-GLOBAL ID

200901086633750793

Research History 5

2007/04 - Present

Graduate School of Environmental Studies, Tohoku University　Associate Professor
2003/04 - 2007/03

Graduate School of Environmental Studies, Tohoku University　Associate Professor
1996/10 - 2003/03

Graduate School of Science, Tohoku University　Research Associate
1995/07 - 1996/09

Researcher of Center of Excellence Solar-Terrestrial Environment Laboratory, Nagoya University
1990/08 - 1992/03

National Institute of Polar Research　Engineer(Member of JARE32)

Education 2

The University of Tokyo　Graduate School, Division of Science　地球惑星物理学

- 1994/12
The University of Tokyo　Faculty of Science　地球物理学

- 1988/03

Committee Memberships 9

宮城県　環境影響評価技術審査会委員

2020/01 - Present
宮城県保健環境センター　評価委員

2015/10 - Present
名古屋大学太陽地球環境研究所共同利用委員会　共同利用・共同研究委員会委員

2010/04 - 2016/03
名古屋大学太陽地球環境研究所共同利用委員会　第９ー１３期大気圏専門委員会委員

2006/04 - 2016/03
地球電磁気・地球惑星圏学会　運営委員

2009/04 - 2015/03
日本気象学会オゾン研究連絡会　幹事

2001/05 - 2014/10
地球電磁気・地球惑星圏学会　大林奨励賞推薦委員

2007/04 - 2011/03
地球電磁気・地球惑星圏学会　学生発表賞（オーロラメダル）審査員

2016/11 -
地球電磁気・地球惑星圏学会　学生発表賞（オーロラメダル）審査員

2007/10 -

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Professional Memberships 3

Japan Society of Atmospheric Chemistry
日本気象学会
地球電磁気・地球惑星圏学会

Research Interests 3

FT-IR
Ozone
Aeronomy

Research Areas 2

Natural sciences / Atmospheric and hydrospheric science /
Natural sciences / Space and planetary science /

Papers 67

Aura Ozone Monitoring Instrument (OMI) Collection 4 Formaldehyde Products Peer-reviewed

Zolal Ayazpour, Gonzalo González Abad, Caroline R. Nowlan, Kang Sun, Hyeong‐Ahn Kwon, Christopher Chan Miller, Heesung Chong, Huiqun Wang, Xiong Liu, Kelly Chance, Ewan O’Sullivan, Lei Zhu, Corinne Vigouroux, Isabelle De Smedt, Wolfgang Stremme, James W. Hannigan, Justus Notholt, Xiaoyu Sun, Mathias Palm, Cristof Petri, Kimberly Strong, Amelie N. Röhling, Emmanuel Mahieu, Dan Smale, Yao Té, Isamu Morino, Isao Murata, Tomoo Nagahama, Rigel Kivi, Maria Makarova, Nicholas Jones, Ralf Sussmann, Minqiang Zhou

Earth and Space Science　12　(2)　2025/02/12
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2024ea003792 　

ISSN： 2333-5084

eISSN： 2333-5084

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Abstract This study presents the ozone monitoring instrument (OMI) Collection 4 formaldehyde (HCHO) retrieval developed with the Smithsonian Astrophysical Observatory's (SAO) Making Earth System Data Records for Use in Research Environments (MEaSUREs) algorithm. The retrieval algorithm updates and makes improvements to the NASA operational OMI HCHO (OMI Collection 3 HCHO) algorithm, and has been transitioned to use OMI Collection 4 Level‐1B radiances. This paper describes the updated retrieval algorithm and compares Collection 3 and Collection 4 data products. The OMI Collection 4 HCHO exhibits remarkably improved stability over time in comparison to the OMI Collection 3 HCHO product, with better precision and the elimination of artificial trends present in the Collection 3 during the later years of the mission. We validate the OMI Collection 4 HCHO data product using Fourier‐Transform Infrared (FTIR) ground‐based HCHO measurements. The climatological monthly averaged OMI Collection 4 HCHO vertical column densities (VCDs) agree well with the FTIR VCDs, with a correlation coefficient of 0.83, root‐mean‐square error (RMSE) of molecules , regression slope of 0.79, and intercept of molecules . Additionally, we compare the monthly averaged OMI Collection 4 HCHO VCDs to OMPS Suomi NPP, OMPS NOAA‐20, and TROPOMI HCHO VCDs in overlapping years for 12 geographic regions. This comparison demonstrates high correlation coefficients of 0.98 (OMPS Suomi NPP), 0.97 (OMPS NOAA‐20), and 0.90 (TROPOMI).
The second campaign results of LODEWAVE (LOng-Duration balloon Experiment of gravity WAVE over Antarctica) Peer-reviewed

TOMIKAWA Yoshihiro, SAITO Yoshitaka, MURATA Isao, SATO Kaoru, HIRASAWA Naohiko, KOHMA Masashi, NAKASHINO Kyoichi, AKITA Daisuke, MATSUO Takuma, FUJIWARA Masatomo, KAHO Takana, YOSHIDA Lihito, KAWAKAMI Rina

JAXA-RR　24　(005)　63-74　2025/01
Flight Performance of Super-Pressure Balloon for LODEWAVE Peer-reviewed

Yoshitaka Saito, Yoshihiro Tomikawa, Isao Murata, Daisuke Akita, Kyoichi Nakashino, Takuma Matsuo, Takuji Sugidachi

Journal of Evolving Space Activities　2　2024/12

DOI： 10.57350/jesa.217 　
Simultaneous Observation of Near-Inertial Frequency Gravity Waves by a Long-Duration Balloon and the PANSY Radar in the Antarctic Peer-reviewed

Yoshihiro TOMIKAWA, Isao MURATA, Masashi KOHMA, Kaoru SATO

Journal of the Meteorological Society of Japan. Ser. II　102　(6)　655-664　2024/12
Publisher: Meteorological Society of Japan
DOI： 10.2151/jmsj.2024-034 　

ISSN： 0026-1165

eISSN： 2186-9057
Recent Decreases in the Growth Rate of Atmospheric HCFC‐22 Column Derived From the Ground‐Based FTIR Harmonized Retrievals at 16 NDACC Sites Peer-reviewed

Minqiang Zhou, Bavo Langerock, Corinne Vigouroux, Dan Smale, Geoff Toon, Alexander Polyakov, James W. Hannigan, Johan Mellqvist, John Robinson, Justus Notholt, Kimberly Strong, Emmanuel Mahieu, Mathias Palm, Maxime Prignon, Nicolas Jones, Omaira García, Isamu Morino, Isao Murata, Ivan Ortega, Tomoo Nagahama, Tyler Wizenberg, Victoria Flood, Kaley Walker, Martine De Mazière

Geophysical Research Letters　51　(22)　2024/11/14
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2024gl112470 　

ISSN： 0094-8276

eISSN： 1944-8007

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Abstract HCFC‐22 is an ozone‐depleting substance with a greenhouse effect. The atmospheric mole fractions of HCFC‐22 have been increasing since the 1950s. Within the NDACC‐IRWG network, HCFC‐22 mol fractions can be retrieved from solar absorption spectra measured by ground‐based FTIR. However, only a few sites have provided HCFC‐22 data sets. Here, we demonstrate a harmonized FTIR HCFC‐22 retrieval strategy and generate a new global NDACC‐IRWG HCFC‐22 data set at 16 FTIR sites. The systematic and random uncertainties are 5.3%–8.7% and 3.2%–8.0%, respectively. A maximum HCFC‐22 column annual growth rate was observed in 2009 with a mean of 7.65 ± 1.39 ppt/year, and the HCFC‐22 annual growth rate decreased to 3.57 ± 1.39 ppt/year (2016–2020) and 2.15 ± 2.09 ppt/year (2021–2023). The annual growth rates derived from the FTIR measurements are compared to the ones derived from NOAA surface flask samplings and ACE‐FTS satellite measurements, and the three independent data sets show a good agreement.
Bias correction of OMI HCHO columns based on FTIR and aircraft measurements and impact on top-down emission estimates Peer-reviewed

Jean-François Müller, Trissevgeni Stavrakou, Glenn-Michael Oomen, Beata Opacka, Isabelle De Smedt, Alex Guenther, Corinne Vigouroux, Bavo Langerock, Carlos Augusto Bauer Aquino, Michel Grutter, James Hannigan, Frank Hase, Rigel Kivi, Erik Lutsch, Emmanuel Mahieu, Maria Makarova, Jean-Marc Metzger, Isamu Morino, Isao Murata, Tomoo Nagahama, Justus Notholt, Ivan Ortega, Mathias Palm, Amelie Röhling, Wolfgang Stremme, Kimberly Strong, Ralf Sussmann, Yao Té, Alan Fried

Atmospheric Chemistry and Physics　24　(4)　2207-2237　2024/02/22
Publisher: Copernicus GmbH
DOI： 10.5194/acp-24-2207-2024 　

eISSN： 1680-7324

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Abstract. Spaceborne formaldehyde (HCHO) measurements constitute an excellent proxy for the sources of non-methane volatile organic compounds (NMVOCs). Past studies suggested substantial overestimations of NMVOC emissions in state-of-the-art inventories over major source regions. Here, the QA4ECV (Quality Assurance for Essential Climate Variables) retrieval of HCHO columns from OMI (Ozone Monitoring Instrument) is evaluated against (1) FTIR (Fourier-transform infrared) column observations at 26 stations worldwide and (2) aircraft in situ HCHO concentration measurements from campaigns conducted over the USA during 2012–2013. Both validation exercises show that OMI underestimates high columns and overestimates low columns. The linear regression of OMI and aircraft-based columns gives ΩOMI=0.651Ωairc+2.95×1015 molec.cm-2, with ΩOMI and Ωairc the OMI and aircraft-derived vertical columns, whereas the regression of OMI and FTIR data gives ΩOMI=0.659ΩFTIR+2.02×1015 molec.cm-2. Inverse modelling of NMVOC emissions with a global model based on OMI columns corrected for biases based on those relationships leads to much-improved agreement against FTIR data and HCHO concentrations from 11 aircraft campaigns. The optimized global isoprene emissions (∼445Tgyr-1) are 25 % higher than those obtained without bias correction. The optimized isoprene emissions bear both striking similarities and differences with recently published emissions based on spaceborne isoprene columns from the CrIS (Cross-track Infrared Sounder) sensor. Although the interannual variability of OMI HCHO columns is well understood over regions where biogenic emissions are dominant, and the HCHO trends over China and India clearly reflect anthropogenic emission changes, the observed HCHO decline over the southeastern USA remains imperfectly elucidated.
The first campaign results of LODEWAVE (LOng-Duration balloon Experiment of gravity WAVE over Antarctica) Peer-reviewed

TOMIKAWA Yoshihiro, SAITO Yoshitaka, MURATA Isao, SATO Kaoru, HIRASAWA Naohiko, KOHMA Masashi, NAKASHINO Kyoichi, AKITA Daisuke, MATSUO Takuma, FUJIWARA Masatomo, KAHO Takana, YOSHIDA Lihito

JAXA-RR-23-003　23-36　2024/02
Numerical Prediction of Changes in Atmospheric Chemical Compositions During a Solar Energetic Particle Event on Mars Peer-reviewed

Yuki Nakamura, François Leblanc, Naoki Terada, Sayano Hiruba, Isao Murata, Hiromu Nakagawa, Shotaro Sakai, Shohei Aoki, Arianna Piccialli, Yannick Willame, Lori Neary, Ann Carine Vandaele, Kiyoka Murase, Ryuho Kataoka

Journal of Geophysical Research: Space Physics　128　(12)　2023/12/06
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022ja031250 　

ISSN： 2169-9380

eISSN： 2169-9402

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Abstract Precipitation of solar energetic particles (SEPs) into planetary atmospheres causes changes in atmospheric chemical composition through ionization, dissociation, and excitation of atmospheric molecules. In contrast to the terrestrial atmosphere, where depletion of ozone in the polar mesosphere has been studied by observations and models for decades, there have been no studies on the effects of SEPs on the neutral chemical composition of Mars' present‐day atmosphere. This study provided the first estimate of the impacts of SEPs on neutral chemical composition in the present‐day Martian atmosphere coupling a Monte Carlo model and a one‐dimensional photochemical model. Our results showed that ozone density in the Martian atmosphere might decrease in the altitude range of 20–60 km with a factor 10 maximum enhancement occurring at 40 km during a Halloween‐class SEP event due to an enhanced concentration of HOx. The depletion of ozone occurred in the altitude range of 20–60 km, corresponding to the penetration of protons with an energy range of 4.6–46 MeV. Such ozone depletion should be detected by Trace Gas Orbiter/Nadir and Occultation for MArs Discovery during intense SEP event. A 75% depletion of the ozone density at 40 km can be expected during SEP events occurring once in every 1 year. Therefore, ozone concentration in the Martian atmosphere might sufficiently decrease during a SEP event as on Earth, but through different chemical pathways driven by CO₂ ionization and CO recombination catalytic cycle.
Photochemical and radiation transport model for extensive use (PROTEUS) Peer-reviewed

Yuki Nakamura, Naoki Terada, Shungo Koyama, Tatsuya Yoshida, Hiroki Karyu, Kaori Terada, Takeshi Kuroda, Arihiro Kamada, Isao Murata, Shotaro Sakai, Yuhei Suzuki, Mirai Kobayashi, François Leblanc

Earth, Planets and Space　75　(1)　2023/09/15
Publisher: Springer Science and Business Media LLC
DOI： 10.1186/s40623-023-01881-w 　

eISSN： 1880-5981

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Abstract We introduce a new flexible one-dimensional photochemical model named Photochemical and RadiatiOn Transport model for Extensive USe (PROTEUS), which consists of a Python graphical user interface (GUI) program and Fortran 90 modules. PROTEUS is designed for adaptability to many planetary atmospheres, for flexibility to deal with thousands of or more chemical reactions with high efficiency, and for intuitive operation with GUI. Chemical reactions can be easily implemented into the Python GUI program in a simple string format, and users can intuitively select a planet and chemical reactions on GUI. Chemical reactions selected on GUI are automatically analyzed by string parsing functions in the Python GUI program, then applied to the Fortran 90 modules to simulate with the selected chemical reactions on a selected planet. We performed a benchmark test of PROTEUS to confirm its validity, by applying it to the Martian atmosphere and the Jovian ionosphere. PROTEUS can significantly save the time for those who need to develop a new photochemical model; users just need to write chemical reactions in the Python GUI program and just select them on GUI to run a new photochemical model. Graphical Abstract
Anomalies of O3, CO, C2H2, H2CO, and C2H6 detected with multiple ground-based Fourier-transform infrared spectrometers and assessed with model simulation in 2020: COVID-19 lockdowns versus natural variability Peer-reviewed

Ivan Ortega, Benjamin Gaubert, James W. Hannigan, Guy Brasseur, Helen M. Worden, Thomas Blumenstock, Hao Fu, Frank Hase, Pascal Jeseck, Nicholas Jones, Cheng Liu, Emmanuel Mahieu, Isamu Morino, Isao Murata, Justus Notholt, Mathias Palm, Amelie Röhling, Yao Té, Kimberly Strong, Youwen Sun, Shoma Yamanouchi

Elem Sci Anth　11　(1)　2023/05/22
Publisher: University of California Press
DOI： 10.1525/elementa.2023.00015 　

eISSN： 2325-1026

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Anomalies of tropospheric columns of ozone (O3), carbon monoxide (CO), acetylene (C2H2), formaldehyde (H2CO), and ethane (C2H6) are quantified during the 2020 stringent COVID-19 world-wide lockdown using multiple ground-based Fourier-transform infrared spectrometers covering urban and remote conditions. We applied an exponential smoothing forecasting approach to the data sets to estimate business-as-usual values for 2020, which are then contrasted with actual observations. The Community Atmosphere Model with chemistry (CAM-chem) is used to simulate the same gases using lockdown-adjusted and business-as-usual emissions. The role of meteorology, or natural variability, is assessed with additional CAM-chem simulations. The tropospheric column of O3 declined between March and May 2020 for most sites with a mean decrease of 9.2% ± 4.7%. Simulations reproduce these anomalies, especially under background conditions where natural variability explains up to 80% of the decline for sites in the Northern Hemisphere. While urban sites show a reduction between 1% and 12% in tropospheric CO, the remote sites do not show a significant change. Overall, CAM-chem simulations capture the magnitude of the anomalies and in many cases natural variability and lockdowns have opposite effects. We further used the long-term record of the Measurements of Pollution in the Troposphere (MOPITT) satellite instrument to capture global anomalies of CO. Reductions of CO vary highly across regions but North America and Europe registered lower values in March 2020. The absence of CO reduction in April and May, concomitant with reductions of anthropogenic emissions, is explained by a negative anomaly in the hydroxyl radical (OH) found with CAM-chem. The implications of these findings are discussed for methane (CH4), which shows a positive lifetime anomaly during the COVID-19 lockdown period. The fossil fuel combustion by-product tracer C2H2 shows a mean drop of 13.6% ± 8.3% in urban Northern Hemisphere sites due to the reduction in emissions and in some sites exacerbated by natural variability. For some sites with anthropogenic influence there is a decrease in C2H6. The simulations capture the anomalies but the main cause may be related to natural variability. H2CO declined during the stringent 2020 lockdown in all urban sites explained by reductions in emissions of precursors.
Validation of OMPS Suomi NPP and OMPS NOAA‐20 Formaldehyde Total Columns With NDACC FTIR Observations Peer-reviewed

H.‐A. Kwon, G. González Abad, C. R. Nowlan, H. Chong, A. H. Souri, C. Vigouroux, A. Röhling, R. Kivi, M. Makarova, J. Notholt, M. Palm, H. Winkler, Y. Té, R. Sussmann, M. Rettinger, E. Mahieu, K. Strong, E. Lutsch, S. Yamanouchi, T. Nagahama, J. W. Hannigan, M. Zhou, I. Murata, M. Grutter, W. Stremme, M. De Mazière, N. Jones, D. Smale, I. Morino

Earth and Space Science　10　(5)　2023/05/15
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022ea002778 　

ISSN： 2333-5084

eISSN： 2333-5084
LODEWAVE (LOng-Duration balloon Experiment of gravity WAVE over Antarctica) International-journal Peer-reviewed

Y. Tomikawa, K. Sato, Y. Saito, I. Murata, N. Hirasawa, M. Kohma, K. Nakashino, D. Akita, T. Matsuo, M. Fujiwara, T. Kaho, L. Yoshida

J. Evolv. Space Activ.　1　14　2023/03

DOI： 10.57350/jesa.14 　
LODEWAVE実験にむけたスーパープレッシャー気球の開発(II) Peer-reviewed

斎藤芳隆, 冨川喜弘, 村田功, 秋田大輔, 中篠恭一, 松尾卓摩, 橋本紘幸, 松嶋清穂

宇宙航空研究開発機構研究開発報告: 大気球研究報告　25-35　2023/02

DOI： 10.20637/00049110 　
Mid-infrared laser heterodyne spectrometer by hollow optical fiber and its newly designed coupler Peer-reviewed

Hiromu Nakagawa, Satoki Tsukada, Takashi Katagiri, Yasumasa Kasaba, Isao Murata, Yasuhiro Hirahara, Yuji Matsuura, Atsushi Yamazaki

Applied Optics　62　(6)　A31-A31　2023/01/17
Publisher: Optica Publishing Group
DOI： 10.1364/ao.475426 　

ISSN： 1559-128X

eISSN： 2155-3165
Variations in Vertical CO/CO<inf>2</inf> Profiles in the Martian Mesosphere and Lower Thermosphere Measured by the ExoMars TGO/NOMAD: Implications of Variations in Eddy Diffusion Coefficient Peer-reviewed

Nao Yoshida, Hiromu Nakagawa, Shohei Aoki, Justin Erwin, Ann Carine Vandaele, Frank Daerden, Ian Thomas, Loïc Trompet, Shungo Koyama, Naoki Terada, Lori Neary, Isao Murata, Geronimo Villanueva, Giuliano Liuzzi, Miguel Angel Lopez-Valverde, Adrian Brines, Ashimananda Modak, Yasumasa Kasaba, Bojan Ristic, Giancarlo Bellucci, José Juan López-Moreno, Manish Patel

Geophysical Research Letters　49　(10)　2022/05/28

DOI： 10.1029/2022GL098485 　

ISSN： 0094-8276

eISSN： 1944-8007
Global Atmospheric OCS Trend Analysis From 22 NDACC Stations Peer-reviewed

James W. Hannigan, Ivan Ortega, Shima Bahramvash Shams, Thomas Blumenstock, John Elliott Campbell, Stephanie Conway, Victoria Flood, Omaira Garcia, David Griffith, Michel Grutter, Frank Hase, Pascal Jeseck, Nicholas Jones, Emmanuel Mahieu, Maria Makarova, Martine Mazière, Isamu Morino, Isao Murata, Toomo Nagahama, Hideaki Nakijima, Justus Notholt, Mathias Palm, Anatoliy Poberovskii, Markus Rettinger, John Robinson, Amelie N. Röhling, Matthias Schneider, Christian Servais, Dan Smale, Wolfgang Stremme, Kimberly Strong, Ralf Sussmann, Yao Te, Corinne Vigouroux, Tyler Wizenberg

Journal of Geophysical Research: Atmospheres　127　(4)　2022/02/27

DOI： 10.1029/2021jd035764 　

ISSN： 2169-897X

eISSN： 2169-8996
First ground-based Fourier transform infrared (FTIR) spectrometer observations of HFC-23 at Rikubetsu, Japan, and Syowa Station, Antarctica Peer-reviewed

Masanori Takeda, Hideaki Nakajima, Isao Murata, Tomoo Nagahama, Isamu Morino, Geoffrey C. Toon, Ray F. Weiss, Jens Mühle, Paul B. Krummel, Paul J. Fraser, Hsiang-Jui Wang

Atmospheric Measurement Techniques　14　(9)　5955-5976　2021/09/03

DOI： 10.5194/amt-14-5955-2021 　

ISSN： 1867-1381

eISSN： 1867-8548
LODEWAVE：LOng-Duration balloon Experiment of gravity WAVE over Antarctica Peer-reviewed

TOMIKAWA Yoshihiro, SATO Kaoru, SAITO Yoshitaka, MURATA Isao, HIRASAWA Naohiko, KOMA Masashi, NAKASHINO Kyoichi, AKITA Daisuke, MATSUO Takuma, FUJIWARA Masatomo, YOSHIDA Rihito

JAXA Research and Development Report　20　(009)　19-33　2021/02
Intense Zonal Wind in the Martian Mesosphere During the 2018 Planet-Encircling Dust Event Observed by Ground-based IR Heterodyne Spectroscopy Peer-reviewed

Miyamoto, A, H. Nakagawa, T. Kuroda, K. Takami, I. Murata, A. S. Medvedev, N. Yoshida, K. Toriumi, S. Aoki, H. Sagawa, Y. Kasaba, N. Terada

Geophys. Res. Lett.　48　(11)　2021
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2021gl092413 　

ISSN： 0094-8276

eISSN： 1944-8007
TROPOMI–Sentinel-5 Precursor formaldehyde validation using an extensive network of ground-based Fourier-transform infrared stations Peer-reviewed

Corinne Vigouroux, Bavo Langerock, Carlos Augusto Bauer Aquino, Thomas Blumenstock, Zhibin Cheng, Martine De Mazière, Isabelle De Smedt, Michel Grutter, James W. Hannigan, Nicholas Jones, Rigel Kivi, Diego Loyola, Erik Lutsch, Emmanuel Mahieu, Maria Makarova, Jean-Marc Metzger, Isamu Morino, Isao Murata, Tomoo Nagahama, Justus Notholt, Ivan Ortega, Mathias Palm, Gaia Pinardi, Amelie Röhling, Dan Smale, Wolfgang Stremme, Kim Strong, Ralf Sussmann, Yao Té, Michel van Roozendael, Pucai Wang, Holger Winkler

Atmospheric Measurement Techniques　13　(7)　3751-3767　2020/07/10

DOI： 10.5194/amt-13-3751-2020 　

ISSN： 1867-1381

eISSN： 1867-8548
Evaluation of a method to retrieve temperature and wind velocity profiles of the Venusian nightside mesosphere from mid-infrared CO<inf>2</inf> absorption line observed by heterodyne spectroscopy Peer-reviewed

Kosuke Takami, Hiromu Nakagawa, Hideo Sagawa, Pia Krause, Isao Murata, Yasumasa Kasaba, Takeshi Kuroda, Shohei Aoki, Toru Kouyama, Theodor Kostiuk, Timothy A. Livengood, Gabriella Gilli

Earth, Planets and Space　72　(1)　2020/05/07
Publisher: Springer Science and Business Media LLC
DOI： 10.1186/s40623-020-01188-0 　

ISSN： 1343-8832

eISSN： 1880-5981
Chlorine partitioning near the polar vortex edge observed with ground-based FTIR and satellites at Syowa Station, Antarctica, in 2007 and 2011 Peer-reviewed

Hideaki Nakajima, Isao Murata, Yoshihiro Nagahama, Hideharu Akiyoshi, Kosuke Saeki, Takeshi Kinase, Masanori Takeda, Yoshihiro Tomikawa, Eric Dupuy, Nicholas B. Jones

Atmospheric Chemistry and Physics　20　(2)　1043-1074　2020/01/27
Publisher: Copernicus GmbH
DOI： 10.5194/acp-20-1043-2020 　

eISSN： 1680-7324

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Abstract. We retrieved lower stratospheric vertical profiles of O3, HNO3, and HCl from solar spectra taken with a ground-based Fourier transform infrared spectrometer (FTIR) installed at Syowa Station, Antarctica (69.0∘ S, 39.6∘ E), from March to December 2007 and September to November 2011. This was the first continuous measurement of chlorine species throughout the ozone hole period from the ground in Antarctica. We analyzed temporal variation of these species combined with ClO, HCl, and HNO3 data taken with the Aura MLS (Microwave Limb Sounder) satellite sensor and ClONO2 data taken with the Envisat MIPAS (the Michelson Interferometer for Passive Atmospheric Sounding) satellite sensor at 18 and 22 km over Syowa Station. An HCl and ClONO2 decrease occurred from the end of May at both 18 and 22 km, and eventually, in early winter, both HCl and ClONO2 were almost depleted. When the sun returned to Antarctica in spring, enhancement of ClO and gradual O3 destruction were observed. During the ClO-enhanced period, a negative correlation between ClO and ClONO2 was observed in the time series of the data at Syowa Station. This negative correlation was associated with the relative distance between Syowa Station and the edge of the polar vortex. We used MIROC3.2 chemistry–climate model (CCM) results to investigate the behavior of whole chlorine and related species inside the polar vortex and the boundary region in more detail. From CCM model results, the rapid conversion of chlorine reservoir species (HCl and ClONO2) into Cl2, gradual conversion of Cl2 into Cl2O2, increase in HOCl in the winter period, increase in ClO when sunlight became available, and conversion of ClO into HCl were successfully reproduced. The HCl decrease in the winter polar vortex core continued to occur due to both transport of ClONO2 from the subpolar region to higher latitudes, providing a flux of ClONO2 from more sunlit latitudes into the polar vortex, and the heterogeneous reaction of HCl with HOCl. The temporal variation of chlorine species over Syowa Station was affected by both heterogeneous chemistries related to polar stratospheric cloud (PSC) occurrence inside the polar vortex and transport of a NOx-rich air mass from the polar vortex boundary region, which can produce additional ClONO2 by reaction of ClO with NO2. The deactivation pathways from active chlorine into reservoir species (HCl and/or ClONO2) were confirmed to be highly dependent on the availability of ambient O3. At 18 km, where most ozone was depleted, most ClO was converted to HCl. At 22 km where some O3 was available, an additional increase in ClONO2 from the prewinter value occurred, similar to the Arctic.
Broadband mid-IR fiber optics for heterodyne spectroscopy in solar system exploration missions

Hiromu Nakagawa, Satoki Tsukada, Yasumasa Kasaba, Yasuhiro Hirahara, Yuji Matsuura, Takashi Katagiri, Isao Murata, Atsushi Yamazaki

Proceedings of SPIE - The International Society for Optical Engineering　11451　2020

DOI： 10.1117/12.2561939 　

ISSN： 0277-786X

eISSN： 1996-756X
Profile retrieval of the stratospheric ozone and nitrogen dioxide with spectrometer type balloon-borne optical ozone sensor Peer-reviewed

MURATA Isao, NOGUCHI Katsuyuki

JAXA Research and Development Report　JAXA-RR-19　(002)　2020/01
Contribution of horizontal and vertical advection to the formation of small-scale vertical structures of ozone in the lower and middle stratosphere at Fairbanks, Alaska Peer-reviewed

Miho Yamamori, Yasuhiro Murayama, Kazuo Shibasaki, Isao Murata, Kaoru Sato

Atmos. Chem. Phys. Discuss.　acp-2019-837　2019/11
Exploring the Atmosphere of Mars with Remote Observations and Numerical Studies: Belgium-Japan partnership 2017-2019, and the Next

Kasaba, Y, H. Nakagawa, H. Sagawa, T. Kuroda, T. Imamura, Y. Kasai, A. Yamazaki, T.M. Sato, H. Maezawa, M. Taguchi, H. Kashimura, I. Murata, N. Terada, T. Sakanoi, A.C. Vandaele, S. Aoki, S. Robert, V. Wilquet, A. Mahieux, S. Bauduin, F. Daerden, L. Neary, S. Viscardy, P.F. Coheur

Proceedings of Symposium on Planetary Science 2019　2019
Ground-based measurement of column-averaged mixing ratios of methane and carbon dioxide in the Sichuan Basin of China by a desktop optical spectrum analyzer Peer-reviewed

Xiu-Chun Qin, Tomoki Nakayama, Yutaka Matsumi, Masahiro Kawasaki, Akiko Ono, Sachiko Hayashida, Ryoichi Imasu, Li-Ping Lei, Isao Murata, Takahiro Kuroki, Masafumi Ohashi

Journal of Applied Remote Sensing　12　(1)　2018/01/01
Publisher: SPIE
DOI： 10.1117/1.JRS.12.012002 　

ISSN： 1931-3195
The recent increase of atmospheric methane from 10 years of ground-based NDACC FTIR observations since 2005 Peer-reviewed

Whitney Bader, Benoit Bovy, Stephanie Conway, Kimberly Strong, Dan Smale, Alexander J. Turner, Thomas Blumenstock, Chris Boone, Martine Collaud Coen, Ancelin Coulon, Omaira Garcia, DavidW. T. Griffith, Frank Hase, Petra Hausmann, Nicholas Jones, Paul Krummel, Isao Murata, Isamu Morino, Hideaki Nakajima, Simon O'Doherty, Clare Paton-Walsh, John Robinson, Rodrigue Sandrin, Matthias Schneider, Christian Servais, Ralf Sussmann, Emmanuel Mahieu

ATMOSPHERIC CHEMISTRY AND PHYSICS　17　(3)　2255-2277　2017/02

DOI： 10.5194/acp-17-2255-2017 　

ISSN： 1680-7316

eISSN： 1680-7324
IR heterodyne spectrometer MILAHI for continuous monitoring observatory of Martian and Venusian atmospheres at Mt. Haleakala, Hawaii Peer-reviewed

Hiromu Nakagawa, Shohei Aoki, Hideo Sagawa, Yasumasa Kasaba, Isao Murata, Guido Sonnabend, Manuela Sornig, Shoichi Okano, Jeffrey R. Kuhn, Joseph M. Ritter, Masato Kagitani, Takeshi Sakanoi, Makoto Taguchi, Kosuke Takami

PLANETARY AND SPACE SCIENCE　126　34-48　2016/07

DOI： 10.1016/j.pss.2016.04.002 　

ISSN： 0032-0633
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
Recent Northern Hemisphere stratospheric HCl increase due to atmospheric circulation changes Peer-reviewed

E. Mahieu, M. P. Chipperfield, J. Notholt, T. Reddmann, J. Anderson, P. F. Bernath, T. Blumenstock, M. T. Coffey, S. S. Dhomse, W. Feng, B. Franco, L. Froidevaux, D. W. T. Griffith, J. W. Hannigan, F. Hase, R. Hossaini, N. B. Jones, I. Morino, I. Murata, H. Nakajima, M. Palm, C. Paton-Walsh, J. M. Russell, M. Schneider, C. Servais, D. Smale, K. A. Walker

NATURE　515　(7525)　104-107　2014/11

DOI： 10.1038/nature13857 　

ISSN： 0028-0836

eISSN： 1476-4687
Comparison of general circulation model atmospheric wave simulations with wind observations of venusian mesosphere Peer-reviewed

Hiromu Nakagawa, Naoya Hoshino, Manuela Sornig, Yasumasa Kasaba, Guido Sonnabend, Dusan Stupar, Shohei Aoki, Isao Murata

Icarus　225　(1)　840-849　2013/07

DOI： 10.1016/j.icarus.2013.02.029 　

ISSN： 0019-1035 1090-2643

eISSN： 1090-2643
Formation process of solid PSCs deteccted by CALIPSO lidar over Greenland Peer-reviewed

Shiraishi K, Nakajima H, Murata I, Saeki K, Tomikawa Y, Ohya M, Jaa

29th Symposium on Aerosol Science and Technology, 2012　115-116　2012
Observed and simulated time evolution of HCl, ClONO2, and HF total column abundances Peer-reviewed

R. Kohlhepp, R. Ruhnke, M. P. Chipperfield, M. De Maziere, J. Notholt, S. Barthlott, R. L. Batchelor, R. D. Blatherwick, Th. Blumenstock, M. T. Coffey, P. Demoulin, H. Fast, W. Feng, A. Goldman, D. W. T. Griffith, K. Hamann, J. W. Hannigan, F. Hase, N. B. Jones, A. Kagawa, I. Kaiser, Y. Kasai, O. Kirner, W. Kouker, R. Lindenmaier, E. Mahieu, R. L. Mittermeier, B. Monge-Sanz, I. Morino, I. Murata, H. Nakajima, M. Palm, C. Paton-Walsh, U. Raffalski, Th. Reddmann, M. Rettinger, C. P. Rinsland, E. Rozanov, M. Schneider, C. Senten, C. Servais, B. -M. Sinnhuber, D. Smale, K. Strong, R. Sussmann, J. R. Taylor, G. Vanhaelewyn, T. Warneke, C. Whaley, M. Wiehle, S. W. Wood

ATMOSPHERIC CHEMISTRY AND PHYSICS　12　(7)　3527-3556　2012

DOI： 10.5194/acp-12-3527-2012 　

ISSN： 1680-7316
High resolution laser spectroscopy in mid-infrared Peer-reviewed

Kasaba, Y, H. Nakagawa, K. Aoki, I. Murata, T. Sakanoi, S. Okano

Kogaku　39　(12)　595-597　2010/12
Searches for volcanic or crustal gas in the recent Martian atmosphere by ground-based observation

Hiromu Nakagawa, Yasumasa Kasaba, Shohei Aoki, Isao Murata, Shoichi Okano, Hiroyuki Maezawa, Hideo Sagawa, Yasuko Kasai

COSPAR 2010 general Assembly　2010
東北大における惑星大気研究：将来地上・探査機観測に向けて

笠羽康正, 岡野章一, 村田功, 坂野井健, 寺田直樹, 藤原均, 中川広務, 鍵谷将人, 垰千尋, 寺田香織

第24回大気圏シンポジウム講演集　2010
高分散分光観測による微量組成成分を軸とした火星大気研究：現状と展望

笠羽康正, 中川広務, 青木翔平, 上野宗孝, 村田功, 坂野井健, 岡野章一, 佐藤毅彦

第10回宇宙科学シンポジウム講演集　2010
Remotely operable compact instruments for measuring atmospheric CO2 and CH4 column densities at surface monitoring sites Peer-reviewed

N. Kobayashi, G. Inoue, M. Kawasaki, H. Yoshioka, M. Minomura, I. Murata, T. Nagahama, Y. Matsumi, T. Tanaka, I. Morino, T. Ibuki

ATMOSPHERIC MEASUREMENT TECHNIQUES　3　(4)　1103-1112　2010

DOI： 10.5194/amt-3-1103-2010 　

ISSN： 1867-1381
Search of SO2 in the Martian atmosphere by ground-based submillimeter observation Peer-reviewed

Hiromu Nakagawa, Yasumasa Kasaba, Hiroyuki Maezawa, Akira Hashimoto, Hideo Sagawa, Isao Murata, Shoichi Okano, Shohei Aoki, Nayuta Moribe, Akira Mizuno, Munetake Momose, Toshikazu Ohnishi, Norikazu Mizuno, Tomoo Nagahama

PLANETARY AND SPACE SCIENCE　57　(14-15)　2123-2127　2009/12

DOI： 10.1016/j.pss.2009.10.001 　

ISSN： 0032-0633
Development of quartz friction gauge on board balloon and sounding rocket Peer-reviewed

J. Kurihara, T. Abe, I. Murata, K. Sato, Y. Tomikawa

Transactions of Japan Society for Aeronautical and Space Sciences, Space Technology Japan　7　(ists26)　Pm_7-Pm_11　2009/06
Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES
DOI： 10.2322/tstj.7.Pm_7 　

ISSN： 1347-3840

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The on-board small vacuum gauge developed in this study is the quartz friction gauge, which is based on the principle that the resonance impedance of a quartz oscillator varies with the pressure of ambient gas. The gauge has a wide measuring range (10⁵-10^-2 Pa), which corresponds to the atmospheric pressure from the ground to an altitude of about 100 km. The sensor part and data processing part weigh 136 g and 210 g, respectively. In addition, the gauge can operate at a power consumption level of less than 1W. The gauge is suited for high altitude balloon experiments where the weight of on-board instruments must be kept to a minimum. The tuning-fork-shaped quartz oscillator in the gauge is widely used for wrist watches and has high resistance to vibration and shock, and thus the gauge is applicable to sounding rocket experiments that require on-board instruments with high resistance to the environment.
Development of a balloon-borne quartz friction gauge and a performance demonstration test using the BU30-5 balloon experiment Peer-reviewed

J. Kurihara, I. Murata, K. Sato, Y. Tomikawa, T. Abe

JAXA Research and Development Report　JAXA-RR-08-001　43-56　2009/02
Publisher: Japan Aerospace Exploration Agency
ISSN： 1349-1113

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Pressure measurements in scientifi c balloon and sounding rocket experiments in the upper atmosphere are technologically and scientifi cally important. An onboard small pressure gauge developed in this study is the quartz friction gauge, which is based on the principle that the resonance impedance of a quartz oscillator varies with the pressure of ambient gas. The gauge has a wide measuring range (10^5 - 10^<-2> Pa), which corresponds to the atmospheric pressure from the ground to an altitude of about 100 km. The sensor part and data processing part weigh 100 g and 200 g, respectively. In addition, power consumption of less than 1 W is achieved with this gauge. The gauge is suited for high altitude balloon experiments because the weight of their instruments is severely limited. A tuningfork-shaped quartz oscillator in the gauge is widely used for wrist watches and the structure has a high resistance to vibration and shock, and thus the gauge is applicable to sounding rocket experiments that require onboard instruments to have high environment resistance. In this paper, we report on a performance demonstration test of the newly developed quartz friction gauge using the BU30-5 balloon experiment.
Development of a balloon-borne optical ozone sensor with GPS receiver Peer-reviewed

I. Murata, K. Sato, T. Yamagami, S. Okano, Y. Tomikawa

JAXA Research and Development Report　JAXA-RR-08-001　57-62　2009/02
Publisher: Japan Aerospace Exploration Agency
ISSN： 1349-1113

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Measurements of stratospheric ozone with a balloon-borne optical ozone sensor Peer-reviewed

I. Murata, K. Sato, S. Okano, Y. Tomikawa

INTERNATIONAL JOURNAL OF REMOTE SENSING　30　(15-16)　3961-3966　2009

DOI： 10.1080/01431160902822823 　

ISSN： 0143-1161
Observation of diurnal variation of HO2 at submillimeter-wave Peer-reviewed

Irimajiri Yoshihisa, Ochiai Satoshi, Kasai Yasuko, Yamagami Takamasa, Saito Yoshitaka, Iijima Issei, Izutsu Naoki, Namiki Michiyoshi, Tomikawa Yoshihiro, Murata Isao, Sato Kaoru

JAXA research and development report　JAXA-RR-07-009　67-74　2008
Publisher: Japan Aerospace Exploration Agency
ISSN： 1349-1113

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A balloon-borne superconducting submillimeter-wave limb-emission sounder (BSMILES) is powerful tool for observations of stratospheric minor constituents. The third flight experiment of BSMILES was conducted on September 4, 2006 to observe diurnal variation of HO_2. BSMILES carries an offset parabolic maim reflector with a diameter of 300mm, a 630 GHz-band SIS mixer cooled by liquid helium, an acousto-optical spectrometer,and 3-axes fiber-optic gyroscope. The gondola was lifted to an altitude of about 37.9km by a balloon of 200,000m3 in volume. The system operated properly and emission line spectra of O3 and minor constituents were measured.The system was retrieved from the sea after the observation.
Intensive ozonesonde observation at Fairbanks and comparison with three-dimensional chemical transport model

Yamamori, M, Y. Murayama, K. Shibasaki, I. Murata, A. Kagawa, Y. Kasai, K. Miyazaki

Journal of the National Institute of Information and Communications Technology　54　(1/2)　39-45　2007/06
Adjustment of optics for the height retrieval from ground-based solar spectra

I. Murata, H. Nakajima, H. Fukunishi

Proccedings of the 7th International Conference on Global Change: Connection to the Arctic　304-306　2007/02

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アラスカにおけるオゾンゾンデキャンペーン観測及び観測結果の3 次元化学輸送モデルデータとの比較

山森美穂, 村山泰啓, 柴崎和夫, 村田功, 香川晶子, 笠井康子, 宮崎和幸

情報通信研究機構ジャーナル　53　(1.2)　35-41　2007
Publisher: 国立研究開発法人情報通信研究機構
DOI： 10.24812/nictkenkyuhoukoku.53.1.2_35 　

ISSN： 2187-767X

eISSN： 2433-6009 2433-6017
Atmospheric observations by a balloon-borne superconducting submillimeter-wave limb-emission sounder Peer-reviewed

Y. Irimajiri, S. Ochiai, Y. Kasai, T. Yamagami, Y. Saito, N. Izutsu, T. Kawasaki, I. Iijima, M. Namiki, I. Murata, K. Saito

CONFERENCE DIGEST OF THE 2006 JOINT 31ST INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 14TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS　495-495　2006
BSMILES - A balloon-borne superconducting submillimeter-wave limb-emission sounder for stratospheric measurements Peer-reviewed

Y Irimajiri, T Manabe, S Ochiai, H Masuko, T Yamagami, Y Saito, N Izutsu, T Kawasaki, M Namiki, Murata, I

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS　3　(1)　88-92　2006/01

DOI： 10.1109/LGRS.2005.856712 　

ISSN： 1545-598X
Temporal variations of HCl, HF, O3, and HNO3 observed at Tsukuba with Fourier transform spectrometer

Murata, I, H. Nakajima, H. Nakane, H. Fukunishi

Proceedings of the 6th International Conference on Global Change: Connection to the Arctic　59-62　2005/12

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Stratospheric ozone and ClO measurement using balloon-borne submillimeter limb sounder Peer-reviewed

S Ochiai, S Tsujimaru, Y Irimajiri, T Manabe, Murata, I

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING　43　(6)　1258-1265　2005/06

DOI： 10.1109/TGRS.2005.845638 　

ISSN： 0196-2892
Observations of stratospheric O_3 and HCl at submillimeter-wave

IRIMAJIRI Yoshihisa, MANABE Takeshi, OCHIAI Satoshi, YAMAGAMI Takamasa, SAITO Yoshitaka, KAWASAKI Tomomi, IZUTSU Naoki, NAMIKI Michiyoshi, SATO Kaoru, MURATA Isao

JAXA research and development report　4　69-76　2005/02
Publisher: 宇宙航空研究開発機構
ISSN： 1349-1113

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The second flight of BSMILES (Balloon-borne Superconducting Submillimeter-Wave Limb-Emission Sounder) was conducted on September 7, 2004 to observe stratospheric O3, HCl and so on. An offset parabolic antenna with a diameter of 300 mm, a 620 GHz-band SIS (Superconductor-Insulator-Superconductor) mixer cooled by liquid helium, an AOS (Acousto-Optical Spectrometer), and 3-axes fiber-optic gyroscope are carried in BSMILES. The gondola waslifted to an altitude of about 35 km by a balloon of 100,000 m3 in volume. The system operated normally and emission line spectra of O3, HCl etc. were successfully obtained. The experiment concludes that the retrieved system is reusable.
A balloon-borne 620-650 GHz SIS receiver for atmospheric observations Peer-reviewed

Y Irimajiri, T Manabe, S Ochiai, H Masuko, T Yamagami, Y Saito, N Izutsu, T Kawasaki, M Namiki, K Sato, Murata, I

IGARSS 2005: IEEE International Geoscience and Remote Sensing Symposium, Vols 1-8, Proceedings　412-415　2005
Development of a Balloon-borne Optical Ozone Sensor with GPS receiver

Murata, I, K. Sato, T. Yamagami, S. Okano, M. Tsutsumi, K. Noguchi, H. Fukunishi

Proceedings of the XX Quadrennial Ozone Symposium　587-588　2004/06

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Validation of the ozone profile derived from ground-based infrared spectra with SFIT2 by comparing with ozonesonde measurements

Murata, I, H. Nakane, H. Nakajima, H. Fukunishi

Proceedings of the XX Quadrennial Ozone Symposium　585-586　2004/06

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Validation and data characteristics of nitrous oxide and methane profiles observed by the Improved Limb Atmospheric Spectrometer (ILAS) and processed with the Version 5.20 algorithm Peer-reviewed

H Kanzawa, T Sugita, H Nakajima, GE Bodeker, H Oelhaf, M Stowasser, G Wetzel, A Engel, U Schmidt, Levin, I, GC Toon, B Sen, JF Blavier, S Aoki, T Nakazawa, KW Jucks, DG Johnson, WA Traub, C Camy-Peyret, S Payan, P Jeseck, Murata, I, H Fukunishi, M von Konig, H Bremer, H Kullmann, JH Park, LL Pan, T Yokota, M Suzuki, M Shiotani, Y Sasano

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES　108　(D16)　10.1029/2002JD002458　2003/08

DOI： 10.1029/2002JD002458 　

ISSN： 2169-897X
The effect of the arctic ozone depletion observed at Tsukuba, Japan in February 2001 (Extended Abstract)

Murata, I, N. Kobayashi, H. Nakane, H. Fukunishi

Tohoku Geophysical Journal　36　(4)　498-500　2003/05
Publisher: Faculty of Science, Tohoku University
ISSN： 0040-8794

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Spectroscopic measurements of tropospheric CO, C2H6, C2H2,and HCN in northern Japan Peer-reviewed

Y Zhao, K Strong, Y Kondo, M Koike, Y Matsumi, H Irie, CP Rinsland, NB Jones, K Suzuki, H Nakajima, H Nakane, Murata, I

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES　107　(D18)　10.1029/2001JD000748　2002/09

DOI： 10.1029/2001JD000748 　

ISSN： 0747-7309
Validation of ozone measurements from the improved limb atmospheric spectrometer Peer-reviewed

T. Sugita, T. Yokota, H. Nakajima, H. Kanzawa, H. Nakane, H. Gernandt, V. Yushkov, K. Shibasaki, T. Deshler, Y. Kondo, S. Godin, F. Goutail, J. P. Pommereau, C. Camy-Peyret, S. Payan, P. Jeseck, J. B. Renard, H. Bösch, R. Fitzenberger, K. Pfeilsticker, M. Von König, H. Bremer, H. Kullmann, H. Schlager, J. J. Margitan, B. Stachnik, G. C. Toon, K. Jucks, W. A. Traub, D. G. Johnson, I. Murata, H. Fukunishi, Y. Sasano

Journal of Geophysical Research Atmospheres　107　(24)　10.1029/2001JD000602　2002
Publisher: Blackwell Publishing Ltd
DOI： 10.1029/2001JD000602 　

ISSN： 0148-0227
Earth-satellite-Earth laser long-path absorption experiment using the Retroreflector in Space (RIS) on the Advanced Earth Observing Satellite (ADEOS) Peer-reviewed

N Sugimoto, N Koga, Matsui, I, Y Sasano, A Minato, K Ozawa, Y Saito, A Nomura, T Aoki, T Itabe, H Kunimori, Murata, I, H Fukunishi

JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS　1　(2)　201-209　1999/03

DOI： 10.1088/1464-4258/1/2/015 　

ISSN： 1464-4258
Assessment of the uncertainties in the NO2 and O-3 measurements by visible spectrometers Peer-reviewed

M Koike, Y Kondo, WA Matthews, PV Johnston, H Nakajima, A Kawaguchi, H Nakane, Murata, I, A Budiyono, M Kanada, N Toriyama

JOURNAL OF ATMOSPHERIC CHEMISTRY　32　(1)　121-145　1999/01

DOI： 10.1023/A:1006184628196 　

ISSN： 0167-7764
Measurements of O-3 and N2O in Alaska with a tunable diode laser heterodyne spectrometer Peer-reviewed

Murata, I, N Fukuma, Y Ohtaki, H Fukunishi, H Kanzawa, H Nakane, K Shibasaki

Adv. Space Res.　24　(12)　1623-1626　1999

DOI： 10.1016/S0273-1177(99)00325-7 　

ISSN： 0273-1177
Retrieval of vertical profiles of ozone from high-resolution infrared solar spectra at Rikubetsu, Japan Peer-reviewed

H Nakajima, Liu, X, Murata, I, Y Konda, FJ Murcray, M Koike, Y Zhao, H Nakane

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES　102　(D25)　29981-29990　1997/12

DOI： 10.1029/97JD02493 　

ISSN： 2169-897X
Carbon monoxide column abundances and tropospheric concentrations retrieved from high resolution groundbased infrared solar spectra at 43.5 degrees N over Japan Peer-reviewed

Y Zhao, Y Kondo, FJ Murcray, Liu, X, M Koike, K Kita, H Nakajima, Murata, I, K Suzuki

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES　102　(D19)　23403-23411　1997/10

DOI： 10.1029/97JD01970 　

ISSN： 2169-897X
Accuracy of total ozone column amounts observed with solar infrared spectroscopy Peer-reviewed

Murata, I, Y Kondo, H Nakajima, M Koike, Y Zhao, WA Matthews, K Suzuki

GEOPHYSICAL RESEARCH LETTERS　24　(1)　77-80　1997/01

DOI： 10.1029/96GL03692 　

ISSN： 0094-8276
DOPPLER DETECTION OF HYDROXYL COLUMN ABUNDANCE IN THE MIDDLE ATMOSPHERE Peer-reviewed

N IWAGAMI, S INOMATA, MURATA, I, T OGAWA

JOURNAL OF ATMOSPHERIC CHEMISTRY　20　(1)　1-15　1995/01

DOI： 10.1007/BF01099915 　

ISSN： 0167-7764

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Misc. 81

国際オゾンシンポジウム2024報告 Peer-reviewed

中島英彰, 村田功, YANG Tianliang, 関谷高志, 藤原正智, 上里至, 宮川幸治

天気　72　(2)　113-120　2025/02
つくばFTIRで観測されたCH3Dの経年変化

村田功, 長浜智生, 森野勇, 中島英彰

第29回大気化学討論会講演要旨集　24　2024/10
南極における大気重力波のスーパープレッシャー気球観測計画（LODEWAVE）の第2回キャンペーン観測の結果

冨川, 喜弘, 佐藤, 薫, 斎藤, 芳隆, 村田, 功, 平沢, 尚彦, 高麗, 正史, 中篠, 恭一, 秋田, 大輔, 松尾, 卓摩, 藤原, 正智, 加保, 貴奈, 吉田, 理人, 川上, 莉奈

大気球シンポジウム: 2024年度　2024/10
Publisher: 宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS)

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レポート番号: isas24-sbs-032
Preliminary results of LODEWAVE Phase II

冨川喜弘, 冨川喜弘, 斎藤芳隆, 村田功, 佐藤薫, 平沢尚彦, 高麗正史, 中篠恭一, 秋田大輔, 松尾卓摩, 藤原正智, 加保貴奈, 吉田理人, 川上莉奈

地球電磁気・地球惑星圏学会総会及び講演会(Web)　156th　2024
つくばFTIR観測で捉えたHCFC-22の減少

村田功, 長浜智生, 森野勇, 中島英彰

第28回大気化学討論会講演要旨集　35　2023/11
Current Status and Future Plans of MM-wave Multi-line Observation at Syowa to Understand the Effect of EPP on the Atmosphere

水野亮, 中島拓, 長濱智生, 溝口玄真, 後藤宏文, 片岡龍峰, 田中良昌, 小池陸斗, 江尻省, 冨川喜弘, 鈴木ひかる, 土屋史紀, 村田功, 笠羽康正

地球電磁気・地球惑星圏学会総会及び講演会(Web)　154th　2023
FTIR観測によるメタン同位体導出

村田功, 長浜智生, 森野勇, 中島英彰

第27回大気化学討論会講演要旨集　O1-21　2022/11
全球オゾントレンドに対する力学的要因の分離

鈴木湧平, 村田功

第27回大気化学討論会講演要旨集　O2-18　2022/11
近年の全球オゾン全量トレンド解析

鈴木湧平, 村田功

第26回大気化学討論会講演要旨集　O1-02　2021/11
Remote sensing of surface pressure on Mars by CO2 2 μm absorption band observed by Mars Express/OMEGA

風間暁, 笠羽康正, 中川広務, 青木翔平, 黒田剛史, 小暮李成, 鈴木湧平, 村田功, 吉田奈央

地球電磁気・地球惑星圏学会総会及び講演会(Web)　150th　2021
つくばFTIRで観測されたオゾン高度分布の検証

村田功, 中島英彰, 森野勇, 武田真憲

第25回大気化学討論会講演要旨集　21　2020/11
南極における大気重力波のスーパープレッシャー気球観測計画(LODEWAVE)の現況

冨川喜弘, 佐藤薫, 斎藤芳隆, 村田功, 平沢尚彦, 高麗正史, 中篠恭一, 秋田大輔, 松尾卓摩, 藤原正智, 吉田理人, TOMIKAWA Yoshihiro, SATO Kaoru, SAITO Yoshitaka, MURATA Isao, HIRASAWA Naohiko, KOHMA Masashi, NAKASHINO Kyoichi, AKITA Daisuke, MATSUO Takuma, FUJIWARA Masatomo, YOSHIDA Rihito

大気球シンポジウム: 2020年度 = Balloon Symposium: 2020　2020/11
Publisher: 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)

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大気球シンポジウム 2020年度（2020年11月5-6日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)）, 相模原市, 神奈川県著者人数: 11名資料番号: SA6000151017レポート番号: isas20-sbs-017
つくばFTIRで観測されたNH3の2018，2019年増大イベント

村田功, 中島英彰, 森野勇, 武田真憲

第24回大気化学討論会講演要旨集　70　2019/11
LODEWAVE (LOng-Duration balloon Experiment of gravity WAVE over Antarctica）

Tomikawa Yoshihiro, Sato Kaoru, Saito Yoshitaka, Murata Isao, Hirasawa Naohiko, Kohma Masashi, Nakashino Kyoichi, Akita Daisuke, Matsuo Takuma, Fujiwara Masatomo, Yoshida Lihito

2019/11
Publisher: Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)

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Balloon Symposium 2019 (November 7-8, 2019. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)), Sagamihara, Kanagawa Japan
南極における大気重力波のスーパープレッシャー気球観測の現況報告

冨川喜弘, 佐藤薫, 斎藤芳隆, 村田功, 平沢尚彦, 高麗正史, Tomikawa Yoshihiro, Sato Kaoru, Saito Yoshitaka, Murata Isao, Hirasawa Naohiko, Kohma Masashi

大気球シンポジウム: 平成30年度 = Balloon Symposium: 2018　2018/11
Publisher: 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)

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大気球シンポジウム平成30年度（2018年11月1-2日. 宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS)）, 相模原市, 神奈川県資料番号: SA6000128024レポート番号: isas18-sbs-024
南極における大気重力波のスーパープレッシャー気球観測

冨川喜弘, 佐藤薫, 斎藤芳隆, 村田功, 平沢尚彦, 高麗正史

大気球シンポジウム: 平成29年度　2017/11
スペクトル取得型光学オゾンゾンデ観測からの成層圏オゾン、二酸化窒素高度分布導出

村田功, 野口克行, dreas Richter, Alexei Rozanov, John, P. Burrows

平成29年度大気球シンポジウム集録　isas17-sbs-005　2017/11

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スペクトル取得型光学オゾンゾンデによる成層圏オゾン、二酸化窒素の観測

村田功, 野口克行, dreas Richter, Alexei Rozanov, John, P. Burrows

第23回大気化学討論会講演要旨集　38-38　2017/10

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改良されたスペクトル取得型光学オゾンゾンデによる成層圏オゾン、二酸化窒素の観測

村田功, 野口克行

平成28年度大気球シンポジウム集録　isas-16-sbs-009　2016/11

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FTIRで観測されたつくばにおけるエタン全量の近年の増加

村田功, 中島英彰, 森野勇

第22回大気化学討論会講演要旨集　38-38　2016/10

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二酸化窒素観測に向けたスペクトル取得型光学オゾンゾンデの改良

村田功, 野口克行

平成27年度大気球シンポジウム集録　isas15-sbs-022　2015/11

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フーリエ変換型赤外分光計で観測されたつくばにおけるエタンの経年変化

村田功, 中島英彰, 森野勇

第21回大気化学討論会講演要旨集　101-101　2015/10

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Recent Northern Hemisphere stratospheric HCl increase due to atmospheric circulation changes

I. Murata, H. Nakajima, I. Morino

CGER News　25　(11)　11-14　2015/02

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B102 微量成分の経年変化に見られる成層圏循環の変動(ブリューワー・ドブソン循環研究の現状と今後の展望,専門分科会)

村田功, 中島英彰, 森野勇

大会講演予講集　107　58-58　2015
Publisher: 日本気象学会
多成分観測用スペクトル取得型光学オゾンゾンデの開発

村田功, 野口克行

平成26年度大気球シンポジウム集録　isas14-sbs-029　2014/11

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フーリエ変換型赤外分光計で観測されたつくばにおけるメタン高度分布の経年変化

村田功, 中島英彰, 森野勇

第20回大気化学討論会講演要旨集　67-67　2014/10

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O1-01 超高分解能赤外レーザヘテロダイン分光器による惑星大気の連続観測(口頭発表セッション1 惑星大気,口頭発表)

中川広務, 青木翔平, 佐川英夫, 笠羽康正, 村田功, Sonnabend Guido, 岡野章一

日本惑星科学会秋期講演会予稿集　2014　"O1-01"　2014/09/10
Publisher: 日本惑星科学会
スペクトル取得型光学オゾンゾンデによる成層圏オゾン高度分布観測

村田功, 佐藤薫, 冨川喜弘, 野口克行, 野本理裕

平成25年度大気球シンポジウム集録　isas13-sbs-028　2013/11
スペクトル取得型光学オゾンゾンデによる成層圏オゾン観測の検証

村田功, 佐藤薫, 冨川喜弘, 野口, 克行, 橋本優希

平成24年度大気球シンポジウム集録　isas12-sbs-035　2012/10
フロン規制でオゾン層破壊は止まったか？

Isao Murata

RikaTan　6　(2)　14-19　2012/02
Publisher: 文一総合出版

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スペクトル取得型光学オゾンゾンデおよびECCオゾンゾンデを用いた成層圏オゾン・重力波観測

村田功, 佐藤薫, 冨川喜弘, 岡野章一

平成23年度大気球シンポジウム集録　isas11-sbs-034　2011/10
A letter of appreciation for the support to the students of the Planetary and Space Physics group, Department of Geophysics, Graduate School of Science, Tohoku University

Tsuchiya F, Sato Y, Katoh Y, Nakagawa H, Kuroda T, Okano S, Ono T, Kasaba Y, Misawa H, Kumamoto A, Sakanoi T, Terada N, Murata I

Planetary People　20　(3)　228-229　2011
Publisher: The Japanese Society for Planetary Sciences
ISSN： 0918-273X
Observation of upper stratospheric ozone in Sanriku and Taiki

Murata, I, K. Sato, Y. Tomikawa, S. Okano, M. Koma

73-75　2010/10
C106 2010年ノルウェー・二ーオルスンにおけるPSCの特性評価とオゾン破壊(中層大気,口頭発表)

中島英彰, 村田功, 佐伯浩介, 白石浩一, 冨川喜弘, 大矢麻奈未

大会講演予講集　98　191-191　2010
Publisher: 日本気象学会
2008年秋季オゾン研究連絡会・極域寒冷域研究連絡会合同研究会の報告(研究会報告)

笠井康子, 川上修司, 河本望, 高島久洋, 永島達也, 村田功, 山崎孝治, 平沢尚彦, 中村尚, 浮田甚郎, 高田久美子, 阿部彩子, 佐藤薫, 本田明治, 齋藤冬樹, 猪上淳, 高谷康太郎, 中島英彰, 冨川喜弘

天気　57　(7)　519-522　2010
Publisher: 日本気象学会
ISSN： 0546-0921
Verification experiment of JEM/SMILES observation by balloon-borne optical ozone sensor and ECC ozone sensor

Kasai, Y, Y. Irimajiri, S. Ochiai, Y. Murayama, I. Murata, K. Sato, Y. Tomikawa, K. Kita, S. Okano

132-135　2009/10
P314 High-resolution spectroscopy from Mars orbiter for minor atmospheric components

Kasaba Y., Nakagawa H., Aoki S., Murata I., Ueno M., Sato T., Sakanoi T.

Abstracts Fall Meeting of the Japanese Society for Planetary Sciences　2009　114-114　2009/09/28
Publisher: The Japanese Society for Planetary Sciences
Report on the Quadrennial Ozone Symposium 2008

NAKANE Hideaki, NAKAJIMA Hideaki, NAGAHAMA Tomoo, KUWAHARA Toshihisa, MIYAGAWA Koji, CHUBACHI Shigeru, SHIBASAKI Kazuo, MIZUNO Akira, TAKIGAWA Masayuki, SHIBATA Kiyotaka, MIYAZAKI Kazuyuki, MURATA Isao, SAEKI Kosuke, HIROOKA Toshihiko

天気　56　(3)　145-156　2009/03/31
Publisher: 日本気象学会
ISSN： 0546-0921
Report on the First International Symposium on the Arctic Research : Drastic Change under the Global Warming

TANAKA Hiroshi L., YAMANOUCHI Takashi, MURATA Isao, MATSUURA Yojiro, SUZUKI Rikie

56　(5)　377-381　2009
Publisher: 日本気象学会
ISSN： 0546-0921
光学及びECCオゾンゾンデによる成層圏オゾン観測

村田功, 佐藤薫, 栗原純一, 岡野章一, 冨川喜弘

平成19年度大気球シンポジウム報告書　84-87　2008/02
水晶気圧計の性能実証試験

栗原純一, 村田功, 佐藤薫, 冨川喜弘, 阿部琢美

平成19年度大気球シンポジウム報告書　88-91　2008/02
D305 赤外・サブミリ波域による火星大気高分散観測(スペシャル・セッション「惑星大気の新しい観測と理論」)

中川広務, 笠羽康正, 橋本明, 前澤裕之, 村田功, 水野亮, 岡野章一

大会講演予講集　94　326-326　2008
Publisher: 日本気象学会
1: Observed Results of "Alaska Project"-Developed Instrument Performance-Comprehensive Arctic Atmosphere Observing System and Observed Results for System Performance Demonstration: 1-1: Stratosphere-Troposphere Observations; Approach from Atmosp

山森美穂, 村山泰啓, 柴崎和夫, 村田功, 香川晶子, 笠井康子, 宮崎和幸

情報通信研究機構季報　53　(1/2)　35-41　2007/10/22

ISSN： 1349-3191
サブミリ波による成層圏HO2の日変化観測

入交芳久, 落合啓, 笠井康子, 山上隆正, 斎藤芳隆, 飯嶋一征, 井筒直樹, 並木道義, 冨川喜弘, 村田功, 佐藤薫

平成18年度大気球シンポジウム報告書　83-86　2007/02
光学及びECCオゾンゾンデによる成層圏オゾン・重力波観測

村田功, 佐藤薫, 岡野章一, 福西浩, 冨川喜弘, 山上隆正

平成18年度大気球シンポジウム報告書　87-88　2007/02
P133 オゾンゾンデ3時間毎観測に現れた下部成層圏オゾン変動と重力波との関係

山森美穂, 村山泰啓, 柴崎和夫, 村田功, 佐藤薫

大会講演予講集　91　269-269　2007
Publisher: 日本気象学会
高高度気球を用いた高度50kmまでの上部成層オゾン観測

村田功, 岡野章一, 福西浩, 佐藤薫, 冨川喜弘, 山上隆正

平成17年度大気球シンポジウム報告書　89-91　2006/03
気球および衛星観測に基づく南極オゾン層回復過程三次元構造の研究

佐藤薫, 冨川喜弘, 橋田元, 門倉昭, 麻生武彦, 山内恭, 並木道義, 松坂幸彦, 山上隆正, 村田功, 中島英彰, 杉田考史

平成17年度大気球シンポジウム報告書　92-95　2006/03
P326 夏季北米アラスカにおける対流圏界面直上域のオゾン変動(2)

山森美穂, 宮崎和幸, 村田功, 香川晶子, 村山泰啓, 柴崎和夫, 笠井康子, 岩崎俊樹, 柴田清孝

大会講演予講集　88　419-419　2005/10/31
Publisher: 社団法人日本気象学会
P420 夏季北米アラスカにおける対流圏界面直上域のオゾン変動

山森美穂, 香川晶子, 笠井康子, 村山泰啓, 柴崎和夫, 村田功, 宮崎和幸, 岩崎俊樹, 柴田清孝

大会講演予講集　87　494-494　2005/04/30
Publisher: 社団法人日本気象学会
D159 第44次日本南極地域観測隊によるオゾンホール観測(中層大気)

佐藤薫, 橋田元, 門倉昭, 吉澤宣之, 松坂幸彦, 並木道義, 村田功, 堤雅基, 山上隆正, 岡野章一, 福西浩, 麻生武彦, 江尻全機, 山内恭

日本気象学会大会講演予講集　86　321-321　2004/10
Publisher: 社団法人日本気象学会
C115 GPS付き光学オゾンゾンデによる上部成層圏オゾン観測(物質循環I)

村田功, 佐藤薫, 堤雅基, 山上隆正, 野口克行, 岡野章一, 福西浩

大会講演予講集　86　213-213　2004
Publisher: 日本気象学会
P316 三次元流跡線を用いた等価緯度 : 温位面上の風系と循環の解析その3

矢萩智裕, 中根英昭, 村田功, 福西浩, 池内和泉

大会講演予講集　85　404-404　2004
Publisher: 日本気象学会
P378 成層圏オゾンの鉛直微細構造の時空間分布と起源

野口克行, 今村剛, 小山孝-郎, 村田功, 冨川喜弘, 佐藤薫, 中根英昭, Bodeker Greg

大会講演予講集　85　466-466　2004
Publisher: 日本気象学会
D106 オゾンゾンデ3時間毎観測に現われた大気重力波にともなうオゾン変動(中層大気)

山森美穂, 村山泰啓, 柴崎和夫, 村田功

大会講演予講集　85　170-170　2004
Publisher: 日本気象学会
FTIRによって観測された対流圏一酸化炭素の季節変化とその要因

小池真, 升井幸男, 近藤豊, 松見豊, 中根英昭, 村田功, 梶井克純, 加藤俊吾, 瀬良正幸

日本気象学会大会講演予講集　83　30-30　2003/05/21
Publisher: 日本気象学会
光学式オゾンゾンデと電気化学式オゾンゾンデの比較観測

野口克行, 村田功, 福西浩, 岡野章一, 佐藤薫, 冨川喜弘, 山上隆正, 松坂幸彦, 並木道義, 斎藤芳隆

平成14年度大気球シンポジウム報告書　57-60　2003/02
高々度気球を用いたオゾンホール回復期の南極昭和基地集中観測計画

佐藤薫, 村田功, 堤雅基, 野口克行, 冨川喜弘, 松坂幸彦, 並木道義, 福西浩, 麻生武彦, 山上隆正

平成14年度大気球シンポジウム報告書　61-62　2003/02
P140 三次元流跡線を用いた等価緯度 : 温位面上の風系と循環の解析その2

矢萩智裕, 中根英昭, 村田功, 福西浩, 池内和泉

大会講演予講集　84　349-349　2003
Publisher: 日本気象学会
P218 FT-IRを用いた大気微量成分高度分布観測の精度

村田功, 福西浩, 中根英昭

大会講演予講集　83　318-318　2003
Publisher: 日本気象学会
P215 三次元流跡線を用いた等価緯度 : 温位面上の風系と循環の解析

矢萩智裕, 中根英昭, 村田功, 福西浩, 池内和泉

大会講演予講集　83　315-315　2003
Publisher: 日本気象学会
欧州成層圏オゾンシンポジウムの紹介

笠井康子, 川上修司, 河本望, 杉田考史, 村田功

天気　50　(5)　395-396　2003

ISSN： 0546-0921
Studies of clarification of ozone layer fluctuation mechanism using satellite data (3). Characteristic evaluation of polar stratopheric cloud and surface observation data for satellite data verification.

村山泰啓, 林田佐智子, 林政彦, 村田功

地球環境研究総合推進費平成14年度研究成果中間成果報告集 1/全5分冊　70-95　2003
ロケットゾンデを用いた上部成層圏におけるオゾン擾乱の観測

野口克行, 今村剛, 小山孝一郎, 鈴木勝久, 村田功, 渡辺隆

大会講演予講集　82　446-446　2002/10/09
オゾンゾンデによる成層圏重力波の観測

野口克行, 今村剛, 小山孝一郎, 鈴木勝久, 村田功, 渡辺隆

大会講演予講集　81　329-329　2002/05
つくばにおけるフーリエ変換型赤外分光計を用いたNO_2全量観測

矢萩智裕, 村田功, 福西浩, 中根英昭

大会講演予講集　81　250-250　2002/05
Research on the elucidation of mechanism of ozone layer variations using satellite data. III. Evaluation of the properties of polar stratspheric cloud data obtained through ground observations for the purpose of verifying satellite data. (Ministry of Envi

村山泰啓, 林田佐智子, 林政彦, 村田功

地球環境研究総合推進費平成13年度研究成果中間成果報告集 1/全4分冊　22-27　2002
Measurements of trace species with Fourier transform spectrometer

I. Murata, H. Fukunishi

Newsletter for Tohoku division of Meteorological Sosiety of Japan　(42)　3-4　2001/11

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つくばおよび陸別FT-IR観測にみられる極渦の影響

村田功, 小林展隆, 福西浩, 中根英昭, 近藤豊, 小池真, 松見豊, ZHAO Y.

大会講演予講集　80　350-350　2001/10/10
NDSC10周年記念シンポジウム (Arcachon,France) の紹介

笠井康子, 川上修司, 河本望, 杉田考史, 村田功

天気　48　(7)　505-506　2001

ISSN： 0546-0921
Stratospheric Ozone Profiles Observed by Balloon-borne Optical Ozone Sondes

OKABAYASHI Masahiro, MURATA Isao, FUKUNISHI Hiroshi

40　45-54　2000/03
Publisher: Japan Aerospace Exploration Agency
ISSN： 0285-9920

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We developed an optical ozone sonde on board a thin-film high-altitude balloon for an in situ measurement of the upper stratospheric ozone in 1993. Since then, observations using developed balloon-borne optical ozone sondes were performed at Sanriku Balloon Center every year until 1999. From 1994 to 1998,observations at Svalbard in the Arctic were also performed. The balloon-borne optical ozone sondes measure the intensity of solar radiation at ozone Hartley band absorption at every 30-40m in the vertical. Due to a smoothing procedure used for data analysis, the vertical resolution of obtained ozone profiles are limited to 1km. Before this balloon-borne optical ozone sonde technique was developed, there was no method to obtain a few kilometer scale ozone vertical distribution structure in the altitude range from 30 to 40km or above.
Measurements of tropospheric trace species with Fourier transform spectrometer

I. Murata, H. Miyauchi, H. Fukunishi, H. Nakane

Newsletter for "Global dymanics of tropospheric chemistry"　(3)　28-34　1999/09

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上部成層圏におけるオゾン高度分布の波状構造

村田功, 岡林昌宏, 福西浩

大会講演予講集　74　C207　1998/10
高高度気球搭載光学オゾンゾンデのゴンドラの揺れの問題

岡林昌宏, 村田功, 福西浩

大会講演予講集　74　P105　1998/10
レーザーヘテロダイン分光計による1997年春期アラスカ観測で得られたO_3とN_2Oの相関

福間憲昭, 村田功, 大瀧雄一郎, 福西浩, 中根英昭, 神沢博, 柴崎和夫

大会講演予講集　73　286-286　1998/05
レーザーヘテロダイン分光計による1997年春期アラスカでのO_3, N_2O, CH_4観測

福間憲昭, 村田功, 福西浩, 中根英昭, 神沢博, 柴崎和夫

大会講演予講集　72　D161　1997/10
レーザーヘテロダイン分光計によるADEOS衛星搭載ILAS検証実験

村田功, 福間憲昭, 福西浩, 神沢博, 柴崎和夫

大会講演予講集　72　D114　1997/10
北極域オゾン減少の日本への影響

福西浩, 村田功

食生活科学・文化及び地球環境科学に関する研究助成研究紀要　(13)　161-167　1997
Publisher: アサヒビ-ル学術振興財団
ISSN： 1345-0115
The atmospheric monitoring system at Moshiri Observatory

I. Murata, H. Nakajima, M. Koike, Y. Kondo

STEL Newsletter　(11)　15　1996/06

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FTIRによるC_2H_6気柱全量観測

樋口聡, 鈴木勝久, 村田功, 中島英彰, 小池真, 近藤豊

大会講演予講集　69　174-174　1996/05/21
Infrared spectroscopic measurements at Hokkaido

I. Murata, Y. Kondo

STEL Newsletter　(10)　4-5　1995/12

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筆頭

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Presentations 77

つくばFTIRで観測されたCH3Dの経年変化

村田功, 長濱智生, 森野勇, 中島英彰

第29回大気化学討論会　2024/10/09
Recent trends of global ozone derived from ground-based and ozonesonde measurements

Yuhei Suzuki, Isao Murata

2024 Quadrennial Ozone Symposium　2024/07/15
Temporal variation of CH3D observed with FTIR at Tsukuba

I. Murata, T. Nagahama, I. Morino, H. Nakajima

NDACC/IRWG-TCCON-COCCON Annual Meeting 2024　2024/07/10
つくばFTIRで観測されたメタン同位体比の経年変化

村田功, 長浜智生, 森野勇, 中島英彰

日本地球惑星科学連合2024年大会　2024/05/27

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本人
つくばFTIR観測で捉えたHCFC-22の減少

村田功, 長濱智生, 森野勇, 中島英彰

第28回大気化学討論会　2023/11/21

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本人
LODEWAVE (LOng-Duration balloon Experiment of gravity WAVE over Antarctica)

冨川喜弘, 斎藤芳隆, 村田功, 佐藤薫, 平沢尚彦, 高麗正史, 中篠恭一, 秋田大輔, 松尾卓摩, 藤原正智, 加保貴奈, 吉田理人

第67回宇宙科学技術連合講演会　2023/10/18
Retrieval of methane isotopes at 3 and 8 micron regions from the spectra observed at Tsukuba, Japan

I. Murata, T. Nagahama, H. Nakajima, I. Morino

NDACC-IRWG/TCCON/COCCON Annual Meeting 2023　2023/06/14
地上観測とオゾンゾンデから得られた近年の全球オゾントレンド

鈴木湧平, 村田功

日本地球惑星科学連合2023年大会　2023/05/22

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本学修士学生
全球オゾントレンドに対する力学的要因の分離

鈴木湧平, 村田功

第27回大気化学討論会　2022/11/17

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本学修士学生
FTIR観測によるメタン同位体導出

村田功, 長浜智生, 中島英彰, 森野勇

第27回大気化学討論会　2022/11/16

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本人
Description of the NIES FTIR observing system at Tsukuba, Japan: candidate for qualification as NDACC instrument

I. Murata, I. Morino, H. Nakajima

TCCON/COCCON/NDACC 2022 Joint Meeting　2022/06/22
南極における大気重力波のスーパープレッシャー気球観測計画（LODEWAVE）の現況

冨川喜弘, 佐藤薫, 斎藤芳隆, 村田功, 平沢尚彦, 高麗正史, 中篠恭一, 秋田大輔, 松尾卓摩, 藤原正智, 吉田理人

第22回宇宙科学シンポジウム　2022/01
LODEWAVE実験に向けたスーパープレッシャー気球NPB02-1の開発

斎藤芳隆, 冨川喜弘, 村田功, 秋田大輔, 中篠恭一, 松尾卓摩, 松嶋清穂, 橋本紘幸

第22回宇宙科学シンポジウム　2022/01
近年の全球オゾン全量トレンド解析

鈴木湧平, 村田功

第26回大気化学討論会　2021/11/09

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本学修士学生
Short Term Variations of HCl and HF Trends Observed with FTIR at Tsukuba and Rikubetsu, Japan

I. Murata, Y. Tomikawa, I. Morino, H. Nakajima, H. Akiyoshi, T. Nagahama

Quadrennial Ozone Symposium 2021　2021/10
つくばFTIRで観測されたオゾン高度分布の経年変化

村田功, 中島英彰, 森野勇, 武田真憲

日本地球惑星科学連合2021年大会　2021/06

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本人
Short-term variations of HCl and HF trends observed with FTIR at Tsukuba and Rikubetsu

I. Murata, Y. Tomikawa, I. Morino, H. Nakajima, H. Akiyoshi, T. Nagahama

The 11th Symposium on Polar Science　2020/12/02
つくばFTIRで観測されたオゾン高度分布の検証

村田功, 中島英彰, 森野勇, 武田真憲

第25回大気化学討論会　2020/11/12
つくば、陸別のFTIRで観測されたHCl、HFの経年変化

村田功, 冨川喜弘, 森野勇, 中島英彰, 秋吉英治, 長浜智生

2020年度ISEE共同利用報告会　2020/10/26
Short-term variations of HCl and HF trends observed with FTIR at Tsukuba

I. Murata, Y. Tomikawa, I. Morino, H. Nakajima, H. Akiyoshi

JpGU-AGU Joint Meeting 2020　2020/07
Temporal variations of HCl and HF observed at Tsukuba related to the change of the meridional circulation in the northern lower stratosphere

I. Murata, Y. Tomikawa, I. Morino, H. Nakajima, H. Akiyoshi

The 10th Symposium on Polar Science　2019/12
FTIR観測によるつくばにおけるCOの経年変化

鈴木大将, 中島英彰, 村田功, 森野勇

第24回大気化学討論会　2019/11
つくばFTIRで観測されたNH3の2018，2019年増大イベント

村田功, 中島英彰, 森野勇, 武田真憲

第24回大気化学討論会　2019/11
フーリエ変換型赤外分光計を用いた地上観測によるつくば上空メタン高度分布の精度検証

代友輝, 村田功, 中島英彰, 森野勇

日本地球惑星科学連合2019年大会　2019/05
Validation of methane tropospheric column observed by FTIR at Tsukuba with airplane sampling

Y. Dai, I. Murata, I. Morino, H. Nakajima

2019 Joint NDACC-IRWG and TCCON Meeting　2019/05
Temporal variation of HCl and HF at Tsukuba related to the change of the meridional circulation in the northern lower stratosphere

I. Murata, Y. Tomikawa, I. Morino, H. Nakajima, H. Akiyoshi, Y. Dai

2019 Joint NDACC-IRWG and TCCON Meeting　2019/05
日本海沿岸における冬季雷の経年変化とその要因

渡邊美幸, 境田清隆, 村田功

日本気象学会2019年度春季大会　2019/05
Profile retrieval of the stratospheric ozone and nitrogen dioxide from the spectra observed with balloon-borne optical ozone sensor International-presentation

MURATA Isao, Katsuyuki Noguchi, Andreas Richter, Alexei Rozanov, nd John, P. Burrows

The 9th Symposium on Polar Science　2018/12

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本人
Temporal variation and its cause of winter lightning in the Japan Sea side

2018/10

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本学学生
Temporal variation of HCl and HF related to the change of the meridional circulation in the northern lower stratosphere International-presentation

MURATA Isao, Y. Tomikawa, I. Morino, H. Nakajima, Y. Inai, Y. Dai

iCACGP-IGAC 2018　2018/09

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本人
Temporal variation of HCl observed at Tsukuba related to the change of the meridional circulation in the northern lower stratosphere International-presentation

MURATA Isao, Y. Tomikawa, I. Morino, H. Nakajima, Y. Dai

NDACC Infrared Working Group Meeting　2018/06

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本人
Increase the total column of Carbonyl sulfide (OCS) observed with FTIR at Tsukuba

MURATA Isao, NAKAJIMA Hideaki, MORINO Isamu

JpGU meeting 2018　2018/05

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本人
Stratospheric ozone and nitrogen dioxide profiles observed with spectrometer type balloon-borne optical ozone sensor International-presentation

Isao Murata, Katsuyuki Noguchi, Andreas Richter, Alexei Rozanov, nd John, P. Burrows

The 8th Symposium on Polar Science　2017/12/04

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本人
スペクトル取得型光学オゾンゾンデ観測からの成層圏オゾン、二酸化窒素高度分布導出

村田功, 野口克行, Andreas Richter, Alexei Rozanov, John, P. Burrows

平成29年度大気球シンポジウム　2017/11/09

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本人
スペクトル取得型光学オゾンゾンデによる成層圏オゾン、二酸化窒素の観測

村田功, 野口克行, dreas Richter, Alexei Rozanov, John, P. Burrows

第23回大気化学討論会　2017/10/02

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本人
Measurements of stratospheric ozone and nitrogen dioxide with spectrometer type balloon-borne optical ozone sensor International-presentation

Isao Murata, Katsuyuki Noguchi, Andreas Richter, Alexei Rozanov, nd John, P. Burrows

The 8th International DOAS Workshop　2017/09/04

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本人
Redecrease of HCl total column density observed with Fourier Transform Infrared Spectroscopy at Tsukuba International-presentation

Dai Y, I. Murata, H. Nakajima, I. Morino, Y. Tomikawa

NDACC Infrared Working Group Meeting　2017/05/29

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本学学生
フーリエ変換型赤外分光計を用いたつくばでの地上観測によるHCl全量の再減少

代友輝, 村田功, 中島英彰, 森野勇, 冨川喜弘

日本地球惑星科学連合2017年大会　2017/05/21

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本学学生
FTIRで観測されたつくばにおけるエタンの近年の増加およびその後の減少

村田功, 中島英彰, 森野勇

日本地球惑星科学連合2017年大会　2017/05/21

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本人
Measurements of stratospheric ozone and nitrogen dioxide with spectrometer type balloon-borne optical ozone sensor International-presentation

Isao Murata, Katsuyuki Noguchi

The 7th Symposium on Polar Science　2016/11/29

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本人
改良されたスペクトル取得型光学オゾンゾンデによる成層圏オゾン、二酸化窒素の観測

村田功, 野口克行

平成28年度大気球シンポジウム　2016/11/01

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本人
FTIRで観測されたつくばにおけるエタン全量の近年の増加

村田功, 中島英彰, 森野勇

第22回大気化学討論会　2016/10/12

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本人
Temporal variation of the total column of ethane observed with FTIR at Tsukuba International-presentation

Murata, I, H. Nakajima, I. Morino

NDACC Infrared Working Group Meeting　2016/05/30

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本人
FTIRで観測されたつくばにおけるエタンの経年変化

村田功, 中島英彰, 森野勇

日本地球惑星科学連合2016年大会　2016/05/22

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本人
Wavelength dependence of sensitivity of the spectrometer for balloon-borne optical ozone sensor International-presentation

Isao Murata

The 6th Symposium on Polar Science　2015/11/16

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本人
二酸化窒素観測に向けたスペクトル取得型光学オゾンゾンデの改良

村田功, 野口克行

平成27年度大気球シンポジウム　2015/11/05

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本人
フーリエ変換型赤外分光計で観測されたつくばにおけるエタンの経年変化

村田功, 中島英彰, 森野勇

第21回大気化学討論会　2015/10/19

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本人
Temporal variation of methane profile observed with FTIR at Tsukuba International-presentation

Murata, I, H. Nakajima, I. Morino

NDACC Infrared Working Group Meeting　2015/06/08

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本人
FTIRで観測されたつくばにおけるメタンの経年変化

村田功, 中島英彰, 森野勇

日本地球惑星科学連合2015年大会　2015/05/24

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本人
微量成分の経年変化に見られる成層圏循環の変動

村田功, 中島英彰, 森野勇

日本気象学会2015年度春季大会　2015/05

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本人
Measurements of stratospheric ozone with spectrometer type balloon-borne optical ozone sensor International-presentation

Isao Murata, Katsuyuki Noguchi

The 5th Symposium on Polar Science　2014/12/02

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本人
多成分観測用スペクトル取得型光学オゾンゾンデの開発

村田功, 野口克行

平成26年度大気球シンポジウム　2014/11/06

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本人
フーリエ変換型赤外分光計で観測されたつくばにおけるメタン高度分布の経年変化

村田功, 中島英彰, 森野勇

第20回大気化学討論会　2014/10/27

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本人
Impacts of the Arctic ozone depletion on Japan observed with FTIR International-presentation

Y. Hashimoto, I. Murata, H. Nakajima, Y. Nagahama, I. Morino, T. Nagahama

NDACC Infrared Working Group Meeting　2014/05/12

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本学学生
フーリエ変換型赤外分光計で観測された日本上空における北極オゾン層破壊の影響

橋本優希, 村田功, 中島英彰, 長浜芳寛, 森野勇, 長浜智生

日本地球惑星科学連合2014年大会　2014/04/27

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本学学生
FTIRで観測されたつくばで上空HCl, HF全量の再増加

村田功, 中島英彰, 森野勇, 秋吉英治

日本地球惑星科学連合2014年大会　2014/04/27

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本人
スペクトル取得型光学オゾンゾンデによるオゾンおよび二酸化窒素の観測

岡野章一

平成2１年度大気球シンポジウム　2009/10
FTIRを用いたつくばでのCH4高度分布観測

中島英彰, 森野勇

第1５回大気化学討論会　2009/10
FTIRを用いたつくばでの観測によるHCL, HF全量の経年変化

中島英彰, 森野勇

第14回大気化学討論会　2008/10
スペクトル取得型光学オゾンゾンデの開発

岡野章一

平成20年度大気球シンポジウム　2008/09
Measurements of stratospheric ozone with a Balloon-borne Optical Ozone Sensor International-presentation

K. Sato, S. Okano, Y. Tomikawa

Quadrennial Ozone Symposium 2008　2008/06/29
Measurements of trace species with ground-based infrared spectroscopy at Tsukuba, Japan International-presentation

D. Tsurushima, H. Nakajima, I. Morino, H. Nakane

Quadrennial Ozone Symposium 2008　2008/06/29
Site report for Tsukuba MIR International-presentation

Murata, I, D. Tsurushima, H. Nakajima, I. Morino

NDACC Infrared Working Group Meeting　2008/05
光学および電気化学式オゾンゾンデによるオゾン高度分布観測

村田功, 岡野章一, 佐藤薫, 冨川喜弘, 堤雅基, 斎藤芳隆, 松坂幸彦, 並木道義, 山上隆正, 水田栄一, 河田二朗

平成19年度国立極地研究所研究集会　2008/03
光学及びECCオゾンゾンデによる成層圏オゾン観測

村田功, 佐藤薫, 栗原純一, 岡野章一, 冨川喜弘

平成19年度大気球シンポジウム　2007/12
FTIRによるつくばでの大気微量成分観測

村田功, 中島英彰

日本地球惑星科学連合2007年大会　2007/05
再使用ロケットを用いたオゾン等反応性気体の観測

村田功

日本地球惑星科学連合2007年大会　2007/05
New HBr cells (No. 30-39) International-presentation

Murata, I, H. Nakajima, I. Morino, H. Ohyama, F. Sakurai

NDACC Infrared Working Group Meeting　2007/05
Site report for Tsukuba MIR International-presentation

Murata, I, H. Nakajima, I. Morino

NDACC Infrared Working Group Meeting　2007/05
Adjustment of optics for the height retrieval from ground-based solar spectra International-presentation

Murata, I, H. Nakajima, H. Fukunishi

7th International Conference on Global Change: Connection to the Arctic　2007/02
光学及びECCオゾンゾンデによる成層圏オゾン・重力波観測

村田功, 佐藤薫, 岡野章一, 福西浩, 冨川喜弘, 山上隆正

平成18年度大気球シンポジウム　2007/01
地上分光観測からの高度分布導出のための光学系の改善とその効果

村田功, 中島英彰, 福西浩

第17 回大気化学シンポジウム　2007/01
地上分光観測からの高度分布導出のための光学系の改善

村田功, 中島英彰, 福西浩

第120回地球電磁気・地球惑星圏学会講演会　2006/11
FTIR観測によるつくばでの大気微量成分全量の変動

村田功, 中島英彰, 中根英昭, 福西浩

第12回大気化学討論会　2006/06
Site report for Tsukuba 120M International-presentation

I. Murata, H. Nakajima

NDACC Infrared Working Group Meeting　2006/05
高高度気球を用いた高度50kmまでの上部成層圏オゾン観測

村田功, 岡野章一, 福西浩, 佐藤薫, 冨川喜弘, 山上隆正

平成17年度大気球シンポジウム　2006/01
地上分光観測からの高度分布導出のための光学系の調整と装置関数の決定

村田功, 中島英彰, 福西浩

第16 回大気化学シンポジウム　2006/01

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Research Projects 21

Study on Atmospheric Trace Gases in the Stratosphere Competitive

1988/04 - Present
Development of the retrieval method for methane isotopes from the ground-based FTIR mesurements

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

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

Institution: Tohoku University

2023/04 - 2026/03
Studies on long-term variations of the isoprene distribution in the troposphere and its effects on air quality using infrared spectroscopy

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: Nagoya University

2021/04/01 - 2024/03/31
A study of stochastic behavior of atmospheric gravity waves in the Antarctic by advanced balloon observations

Sato Kaoru

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: The University of Tokyo

2018/04/01 - 2021/03/31

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Momentum transport by atmospheric gravity waves (GWs) is one of the main uncertainties in the current climate models, especially in the Antarctic region where uncertainties are large. In order to obtain a three-dimensional picture of the momentum transport due to GWs, we proposed a super-pressure (SP) balloon observation of GWs over the Antarctic and developed its balloon and onboard instrument. A SP balloon with designated pressure resistance and gas permeability was successfully developed by covering the double-membrane SP balloon with a vectran net. In addition, an onboard instrument which measures horizontal wind velocity, air temperature, and pressure every 30 sec were manufactured. It has a weight less than 3 kg and is classified as a light balloon according to the regulations of the International Civil Aviation Organization. The first SP balloon observation in the Antarctic region will be performed by the 63rd Japanese Antarctic Research Expedition around January 2022.
Visible and infrared high dispersion spectroscopic investigation of the solar system planets in the Hawaii Haleakala observatory

KASABA Yasumasa, SAKANOI Takeshi, MURATA Isao, NAKAGAWA Hiromu, KAGITANI Masato, OKANO Shoichi, YOSHIKAWA Ichiro, YAMAZAKI Atsushi, KAMEDA Shingo, TAO Chihiro, YONEDA Mizuki

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

2012/04/01 - 2015/03/31

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We Tohoku Univ. have operated 40cm telescope at Mt. Haleakala of Maui Island by the cooperation with Univ. Hawaii. Utilizing its wide FOV and high dispersion spectroscopic capabilities, we investigated (1) the origin of the variations of Herman sodium atmosphere (with NASA/MESSENGER orbiter), (2) the effects of Io torus to Jovian magnetospheric activities (with JAXA/Hisaki EUV space telescope). We also investigated following targets by related telescope and satellites; (3) the search of escaping atmospheres of Venus and Mars (by Hisaki); (4) the study of velocity field and trace gas elements in the upper atmosphere of Venus (at Kitt Peak, Hida, and Haleakala), and (5) the search of crust origin gas (H2O/HDO, CH4) in the Martian atmosphere (at Manua Kea, Haleakala). Moreover, at the Haleakala observatory, (6) we moved 60cm telescope from Iitate, Fukushima (first light: fall 2014), and constructed the 2m telescope (first light: the end of 2016) under the collaboration with Univ. Hawaii.
Development of a measuring system of column-averaged mixing ratio of greenhouse gases with an optical spectrum analyzer operated in near infrared region

NAGAHAMA Tomoo, MIZUNO Akira, MAEZAWA Hiroyuki, MURATA Isao, TANADA Ryo, YASHIMA Shimpei, KUSAKARI Satoshi, FUJIMORI Takaaki, IBUKI Norio

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: Nagoya University

2011/04/01 - 2014/03/31

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We have newly developed a measuring system of column-averaged mixing ratio of carbon dioxide and methane with an optical spectrum analyzer operated in near infrared region. We made an evaluation of the instrumental parameters such as a resolution in wavelength and sensitivity, and have found that the estimated resolution was achieved to an expected value if we used an optical fiber with a slit at the edge. Next, we developed a program to retrieve a column-averaged mixing ratio from an observed spectrum. Simulation results showed that we can retrieve the mixing ratio within an accuracy of 1% from the spectrum whose signal-to-noise ratio is 500. We had made a comparison between the mixing ratio obtained with our system and a high-resolution FTIR system, and have found that fluctuation of the intensity obtained with our system was estimated to be about 3%, which is not achieved to the expected value. We will improve a mount mechanism of the fiber and slit system to resolve this problem.
Atmospheric dynamics and variations of minor components in the terrestrial planets by high-dispersion spectroscopic studies

KASABA Yasumasa, NAKAGAWA Hiromu, MURATA Isao, SAKANOI Takeshi, OKANO Shoichi, FUJIWARA Hitoshi

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

2010 - 2012

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We executed thespectroscopic/theoretical studies of Marsian and Venusian atmospheres with the instrument developments. (a) Atmospheric dynamics and variations of minor components: [A-1.grounbased observation] Velocity/temperature/H2O2/HDO/ etc. were studied by IR and submm observations. [A-2. Orbiter observations] Temperature/clouds/minor components were studied by Venus Express and Mars Express data sets. [A-3: Numerical models] GCMs were developed and utilized with the observational studies. (B)Spectrometer developments: [B-1. For Ground-based] We succeeded to the development of MIR Heterodyne spectrometer. [B-2. For Orbiter] Base investigation was executed. It was utilized for the studies of Martian / Jovian submm instruments.
Observation of ozone, nitrogen dioxide, chlorine dioxide, and bromine monoxide by the optical ozonesonde with spectrometer

MURATA Isao, KASABA Yasumasa, NAKAGAWA Hiromu, FUJIWARA Hitoshi, NOGUCHI Katsuyuki

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

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

Institution: Tohoku University

2010 - 2012

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The purpose of this research was the validation of our new instrument that can measure NO_2, OClO, and BrO with O_3. We prepared for the balloon experiment in 2010 but quitted due to the trouble of CPU in the instrument. We checked and improved the instrument in2011 and again prepared for the balloon experiment in 2012 but no balloon launched in this year due to the unusual meteorological condition. Therefore, test measurements were performed at ground on the sunrise and culmination. We confirmed that at least the stratospheric column of NO_2 can be derived.
A study on characterization of polar stratospheric clouds(PSC) related to ozone depletion

NAKAJIMA Hideaki, SUGITA Takafumi, MURATA Isao, NAGAHAMA Tomoo, SHIRAISHI Koichi

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: National Institute for Environmental Studies

2008 - 2011

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Polar Stratospheric Cloud(PSC) plays essential role in polar ozone depletion and/or ozone hole. However, the characteristics of PSC, such as type, mixture, its role on ozone destruction, etc. have not yet understood well. In this study, we made comprehensive observations of PSC, ozone, and related minor constituents by ground-based spectrometers, lidar, sondes, and satellites to clarify characteristics of PSCs and its effect on ozone depletion quantitatively. We succeeded to capture the historical largest Arctic ozone hole which occurred in 2011 spring.
Development of optical ozone sensor with spectrometer

MURATA Isao, FUJIWARA Hitoshi, KASABA Yasumasa

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

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

Institution: Tohoku University

2007 - 2009

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A optical ozonesonde with lightweight small spectrometer was developed to measure NO_2 as well as ozone. There were some difficulties such as huge telemetry data and incident angle dependency of optical fiber input but the instrument was completed and it passed the performance tests. The observation with this new instrument will be carried out.
Investigations on TLEs and TGFs using micro-satellite and ground observation network

TAKAHASHI Yukihiro, YOSHIDA Kazuya, SAKAMOTO Yuji, SAKANOI Takeshi, FUJIWARA Hitoshi, MURATA Isao, MITANI Takefumi, NAKAZAWA Kazuhiro, TAKASHIMA Takeshi, TSUCHIYA Fuminori, OHYA Hiroyo, KAMOGAWA Masashi, SATO Mitrsuteru, ADACHI Toru

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Specially Promoted Research

2007 - 2009

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In order to investigate TLEs, TGFs, global lightning activities, and their effects on the atmosphere/ionosphere/magnetosphere, university microsatellite, named SPRITE-SAT (RISING) was developed successfully and launched in January 2009. Ground-based lightning observation networks using ELF and VLF radio wave were also developed and operated. Based on the data obtained by the ground-based instruments and previously launched satellites, various kinds of data analysis have been carried out, which contribute to the understanding of basic mechanisms of TLEs/TGFs, global lightning activity and their quantitative effects.
地球起源ガンマ線の生成メカニズムの解明

高橋幸弘, 藤原均, 村田功

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(B)

Institution: 東北大学

2006 - 2008

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米国NASAのガンマ線天文台衛星BATSE/CGROは、地球起源のガンマ線現象TGFs(Terrestrial Gamma-ray Flashes)を検出し、TGFとVLF/ELF帯の放電電波放射の同定に成功した。さらに、2002年に打ち上げられたREHSSI衛星によって、BATSEを遙かに上回る頻度でTGFが大量に観測され、エネルギーは最高で20-40eVに達することが明らかになった。その後、地上観測によるsfericsとの関係が精力的に検証されたが、TGFを引き起こす雷放電の性質は未解明な部分が多い。本研究では、RHESSIによって観測された500以上にのぼるTGFイベントと、東北大学が有する全球的なELF電波観測ネットワークによるsfericsデータを詳細に比較・検討し、TGFを発生させる雷雲活動の条件について明らかにする。18年度は、RHESSIによって観測された、特に特徴的なTGFイベントについて、同時刻に発生したELF波形を詳細に検討し、その他のイベントについてもデータベースの作成を進めた。その結果、大規模なTGFであっても必ずしも大規模落雷に伴うものでないという性質があらためて確認された。また、ISUAL衛星による雷放電の光学観測データから、TGFの相対的な発生確率の世界分布を明らかにした。さらに、アジア地域の集中観測キャンペーンの準備のため、雷放電の地上観測装置を台湾・台南市の国立成功大学屋上に設置した。海外の関連研究者との打合せと成果発表のために、シンガポールでのAOGS、北京でのWPGM、ドイツでのEuroplanetの各国際会議に出席した。
衛星と地上観測による雷雲上方の放電発光現象の研究

福西浩, 高橋幸弘, 藤原均, 村田功

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(B)

Institution: 東北大学

2006 - 2007

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1989年に雷放電による中間圏大気の発光現象スプライトが発見されて以来、この10数年間に地上観測が続々と行われ、スプライトの他にも様々な過渡発光現象(TLE)が存在することが分かってきた。しかしこれまでの地上観測は限られた地点での観測であり、海上での観測もなかったことから、グローバルな発生分布を知ることができなかった。本研究では、2004年5月に打ち上げられたFORMOSAT-2衛星に搭載ISUAL観測器による雷放電発光現象のグローバル観測に基づき、TLE発生を支配する気象および雷雲活動条件と、発生機構の詳細を明らかにする。そのために、気象衛星データおよび地上ELF/VLF・光学観測データの解析結果や数値シミュレーションの結果を統合していく。平成18年度は、以下の成果が得られた。 1.衛星による発光現象のグローバル観測とデータ解析:FORMOSAT-2衛星搭載のアレイフォトメータの機能と取得データを定期的にチェックし、良好な観測データを得た。それらを解析した結果、TLEの世界発生分および雷放電数に対する発生確率分布を世界で初めて明らかにした。 2.ELF/VLF観測とデータ解析:世界4カ所(女川観測所、南極昭和基地、北極のキルナ、米国カリフォルニア州)に設置・運用しているELF観測網と国内のVLF受信機を運用し、得られたELF/VLFデータの解析を行った。特に、落雷位置決定精度の向上に努め、4倍以上の改善を達成した。またISUALデータと比較し、ELF波形からみたTLE発生条件について考察を行った。 3.地上光学観測装置の開発:地上観測を充実させるために、主に光学観測装置の開発を進めた。 4.数値シミュレーション:観測データの解析から得られる発光現象の発生条件をパラメータとして用い、TLEの時空間構造と化学的効果についてシミュレーションを行い、NOXの異常増加を初めて示した。
Evaluation of the effects of global lightining activity on the middle/upper atmosphere and atmosphere and the ionosphere/magnetosphere

TAKAHASHI Yukihiro, FUKUNISHI Hiroshi, MURATA Isao, FUJIWARA Hitoshi, MAKITA Kazuo, TAGUCHI Makoto

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

2003 - 2005

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In this research we have carried out optical and radio wave observations of lightning- induced TLEs (transient luminous events) in the middle and upper atmosphere, including sprites and elves, under international collaboration in order to clarify the generation mechanisms of TLEs and to understand their global effects both in electromagnetic and chemical point of view. 1. Sensor installation and steady observation in Scandinavia We visited ESRANGE observatory in Kiruna, Sweden in 15 FSY and carried out maintenance/ of CCD camera, installation of ELF and VLF receivers. In 16 and 17 FSY, we visited there again and carried out the maintenance and adjustments. The continuous data acquisition have been carried out up to now successfuly. 2. Extension and steady operation of world wide ELF network In addition to the ELF systems both at Syowa, Antarctica and Onagawa, Japan, we installed 2 more systems at Kiruna (FSY 15) and at Santa Cruz, California, USA (FSY 17). The system consisting of 4 stations is quite unique and the most useful network for lightning detection in estimating charge moment of lightning. 3. Optical measurements of TLEs by FORMOSAT-2/ISUAL and data analysis Taiwanese satellite FORMOSAT-2 was launched successfully on 20 May, FSY of 16. FORMOSAT-2 carries 3 sprites/lightning optical equipments and its health is in good condition since the start of observation. The analysis shows the first global distribution of TLEs (sprites, elves) and absolute electron energy in TLE for the first time. 4. Estimation of chemical effects of TLEs and lightning based on computer simulation We carried out the computer simulations to examine the physical mechanisms and to estimate the chemical effects on the ambient atmosphere. In addition, we visited University of Bremen, Germany and discussed about comparison between the chemical measurement with satellite and ELF network data.
Reconstruction of glacial-interglacial variations of greenhouse gases from a Greenland deep ice core, NGRIP

NAKAZAWA Takakiyo, AOKI Shuji, MURATA Isao, WATANABE Okitsugu, SHOJI Hitoshi, SUGAWARA Satoshi

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

2001 - 2004

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In order to reconstruct variations of atmospheric CH_4, N_2O, CO_2 and O_2 concentrations, δ^<15>N of N_2, δ^<18>O of O_2, and air content for the last 130 Kyrs, we analyzed the North-GRIP deep ice core from Greenland using a wet air extraction technique. We also determined ice age and age differences between ice and occluded air based on the results of δ^<18>O of ice and an accumulation model. After correcting for a gravitational effect occurred due to molecular diffusion in firn, detailed temporal variations of all the abovementioned factors were deduced. Furthermore, we also discussed the similarity and differences between variation histories of all factors in north and south polar regions, by comparing the results obtained from the North-GRIP core and the Dome Fuji deep ice core, Antarctica. Especially interesting results derived in this study are that 1.the CH4 concentration was always higher in the north polar region in the south polar region, and those concentration differences depended on temperature, except for Holocene, 2.the CO_2 concentrations from the North-Grip core were apparently higher than those from the Dome Fuji core, suggestion that CO2 was newly produced by reacting with impurities during storage of air in ice in Greenland, 3.the N_2O concentrations from the North-Grip and Dome Fuji ice cores were fairly stable for Holocene, but quite variable in the glacial period, 4.the O2 concentrations from the North-Grip and Dome Fuji ice cores were extremely low, suggesting that the process of air occlusion into ice at the bottom of firn is very complex, and 5.that temporal variations of air content from both cores were similar to each other, but such variations are in conflict with our present knowledge, which may be related to incident solar radiation. By analyzing the temporal variations of CH4 concentration differences obtained from the North-Grip and Dome Fuji ice cores using a 3-box model consisting of northern and southern high latitudes and low latitude, we also succeeded in elucidating where was responsible for the north-south concentration differences over the glacial interglacial period.
Energy coupling between atmosphere and inosphere via electrical descharge

FUKUNISHI Hiroshi, FUJIWARA Hitoshi, MURATA Isao, TAKAHASI Yukihiro, YUMOTO Kiyofumi, SAKANOI Takeshi

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

2001 - 2003

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In order to investigate the generation mechanisms of luminous events in the middle and upper atmosphere induced by lightning discharge and their relationship to the parental thunderstorm activity, some observation campaigns and continuous measurements have been carried out using a multipoint observation system composed of several optical instruments and VLF-ELF radio wave sensors. Detail analysis and computer simulations based on the observation data clarified following issues : (1) Thunderclouds producing sprites around Japan in wintertime are classified into 4 types and the apparent feature of sprites depends on the geographic location. (2) Cloud to ground discharge generating winter sprites in Japan occurs in the most active convective region of the thundercloud. (3) Considering the appearance of intermittent radio wave in VLF range just after sprite optical emissions, it is suggested that hybrid type discharge consisting of cloud-to-ground and intra-cloud discharges is relating to sprite generation. (4) Number of columns in a sprite event well correlates to the peak current of the parent lightning while the vertical length of column shows good correlation with charge moment of the cloud to ground lightning. (5) The average upper and bottom heights and the horizontal extent of sprite halo are 88 km, 73 km and 86 km, respectively. The estimated electron energy is 6 ?23 eV. (6) The average number of sprite evens for a day is estimated to be 720 based on the ELF measurements. (7) The lightning energy shows variation with a time period of 27.9 days, which may be caused by solar activity. (8) Sprites and sprite halo could be major sources of O(D) in the nighttime mesosphere.
Ground-based infrared measurements of the Venus atmosphere with a Fourier transform spectrometer and a laser heterodyne spectrometer

MURATA Isao, FUKUNISHI Hiroshi, FUJIWARA Hitoshi, TAKAHASHI Yukihiro, OKANO Shoichi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

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

Institution: Tohoku University

2000 - 2002

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A new optical observation system for planets with 60 cm telescope was installed in Iitate, Fukushima in 1999. The purpose of this study is to observe Venus atmosphere with the infrared spectrometers of this system. In 2000, the sensitivity of the InGaAs detector of the Fourier transform spectrometer (FT-IR) was checked using black body. The alignment of the acousto-optical spectrometer of the laser heterodyne spectrometer was adjusted to improve the wavenumber resolution. In 2001, FT-IR was set at Iitate and the spectra of the Venus between 0.9 and 1.7 μm were measured as a test observation. A new InSb detector for longer wavelength than 2 μm were installed to the FT-IR. In 2002, Venus atmosphere was observed with InGaAs detector of FT-IR on 8 days from September 2002 to January 2003. O_2 emission of Venus atmosphere at 1.27 μm were detected on November 29, December 11, 14, and 28. Jupiter spectrum were measured on December 7 and CH_4 absorption of Jupiter atmosphere were detected. Venus spectrum were also measured with InSb detector but there was strong thermal emission of the instruments at wavelength longer than 4μm. This thermal emission should be reduced with optical filter or some other methods.
Mechanisms of stratospheric ozone depletion at high and middle latitudes

KOIKE Makoto, SUZUKI Katsuhisa, KONDO Yutaka, TAKEGAWA Nobuyuki

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 - 2000

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Measurements of HF, HCl, ClONO2, HNO3, and O3 were made using the Ground-based FTIR instruments at Rikubetsu and Moshiri observatories on the island of Hokkaido, Japan, and at Kiruna Sweden since 1995. All these species observed in Japan show marked seasonal variations. Namely the column amounts are minimum in July-September and reach maximum values in February-April. These species are produced through photolysis of long lived trace species. The increases of the abundance of these species from fall to spring are basically due to poleward transport by planetary waves. In addition to the general increase of the column abundances in winter and spring, the variability is larger in these seasons. Based on the potential vorticity (PV) analysis, air mass in the polar vortex was occasionally transported to over the north part of Japan between February and April. On these cases, a decrease in the HCl/HF ratio and an increase in the ClONO2/HF ratio were observed. These results were consistent with those calculated using the three-dimensional chemistry and transport model (CTM) in which heterogeneous reactions on polar stratospheric clouds (PSCs) were included The observed day to day variation of O3 between January and April was generally in good agreement with that calculated using the CTM which included the heterogeneous reactions on PSCs. These CTM calculated O3 amounts were lower than those calculated without the heterogeneous reactions by 2 % at the end of March. When air mass in the polar vortex was transported to over Rikubetsu the difference was as large as 6 %. These results suggest the size of influence from the transport of air from the Arctic that was responsible for the ozone decrease observed at midlatitudes.
Processes of optical and radio emissions in the upper atmosphere induced by cloud to ground discharge

FUKUNISHI Hiroshi, MURATA Isao, TAKAHASHI Yukihiro, WATANABE Shigeto, NAGANO Isamu, SAKANOI Takeshi

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

1998 - 2000

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In 1990 a discharge phenomenon from the stratosphere to the ionosphere was found during the tcst observation of a low-light TV camera employed by University of Minnesota. Since this discovery a lot of observations from ground, aircraft and space shuttle have been carried out. It is found that these kinds of optical emissions in the stratosphere, mesosphere and lower ionosphere, now called sprites and elves, are induced by an intense cloud to ground discharge and that the phenomena are accompanied by strong radio and gamma ray emissions. Optical emissions of sprites and elves are considered to be caused by an excitation via collision processes between atmospheric molecules/atoms and electrons that are energized by quasi-static electric field or electromagnetic impulse generated by a cloud to ground discharge. We estimated the electron energies based on the spectral observations with high-speed photometers. It is found that electron temperature has a peak of 3-25 eV for carrot-like sprites and 2-14 eV for column type sprites at the onset of the optical emission. In a body of carrot-like sprites the electron temperature tends to increase as altitude decreases with a local peak of 12-20 eV at an altitude of 〜80 km that corresponds to gap between hair and head region of sprites. On the other hand, it is confirmed that elves are caused by a negative cloud to ground discharge as well as a positive one. Electron energy of elves was found to reach up to 40 eV, which implies a strong ionization in the lower ionosphere. We conducted optical observation in Japan and showed the occurrences of sprites and elves in winter for the first time in the world. We also analyzed the "sprite halo" which appears as a diffuse fashion with a disk-like shape and revealed its time-space structure of luminous intensity and electron temperature.
Studies of the morphology and the hetelogeneous reactions of Arctic PSC over Spitsbergen

SHIBATA Takashi, OSADA Kazuo, MATSUNAGA Katsuji, IWASAKA Yasunobu, TAKAHASHI Yukihiro, HUKUNISHI Hiroshi

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: Nagoya University

1997 - 1999

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Many PSC events were observed by the lidar observations at Ny-Aalesund, Svalbard (79゜N, 12゜W). The sandwich structure found in the vertical profile of PSC, which was frequently observed when the stratospheric temperature was lowered near the frost point, is very characteristic. The enhancement of PSC was observed when stratospheric temperature decreased near the frost point. The peak value of the backscattering ratio of the PSC is 5 to 8, and the depolarization ratio is near zero. The peaks of depolarization were found at the top and bottom sides of the PSC scattering layer. In other words, a liquid layer of PSC was between the solid layer (sandwich). The backscattering did not enhance at the depolarization peaks. The scattering and depolarization are inversely correlated in the sandwich structure for the vertical direction. This inverse correlation was observed not only in the sandwich structure, but also in the almost all the PSC events. There was few events when the scattering and depolarization were increased simultaneously. The numerical simulations of the lidar observations show some important suggestions for the microphysical processes of PSC. The simulations indicate that the parts of the characteristics of PSC can be explained by the ternary solution of H2SO4/HNO3/H2O. The observations were well simulated only when the number concentration of solid particles are between 10ィイD1-3ィエD1 and 10ィイD1-2ィエD1 /cc.
Measurements of the vertical distributions of ozone and related species using high resolution FTIR

NAKAJIMA Hideaki, MURATA Isao, TAGUCHI Makoto, KOIKE Makoto, KONDO Yutaka

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

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

Institution: Nagoya University

1996 - 1997

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We installed the Tunable Diode Laser Heterodyne Spectrometer (TDLHS) at Moshiri Observatory, Nagoya University in October, 1996. Measurement of Solar infrared spectra using TDLHS and Fourier-Transform Infrared Spectrometer (FTIR) were made for two weeks simultaneously. Absorption spectra of several trace molecules such as O3, N2O,HCl, HF,and HNO<@D23@>D2 were taken. Also ozonesonde measurements were conducted at Moshiri Observatory. Vertical profiles of volume mixing ratios (VMRs) of O3 were retrieved from these high-resolution solar spectra. The VMR profile retrieval is based on an iterative inversion algorithm, which utilizes line-by-line, layr-by-layr calculations. Eighty ozone vertical profiles were retrieved from the two spectral regions from 40 spectra and were compared with 17 ozonesonde measurements from a nearby station. Average differences between 18 and 34 km were less than (]SY.+-。[) 12%. The standard deviation of the average differences between 18 and 34 km were less than 20%. Effects of several different factors on errors of profile retrievals, such as initial guess, temperature profiles, and instrument line shape functions, were evaluated by numerical simulation. The estimated errors were extremely consistent with the observed errors between 18 and 34 km, suggesting that the FTIR was optically well adjusted. In general, it was found that retrieval of the O3 profile gives VMRs in an accuracy better than 40% at 14 km, improving to 10-15% between 18 and 30 km, with precision of 30% and 20% for these altitude ranges, respectively.

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2014/11/14 -

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講演者：村田功講演タイトル：地球温暖化とその影響盛岡中央高校が年数回行っている環境講演会の講師として、温暖化に関する講演を1回行った。
みやぎ県民大学

2007/06 -

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「地球・環境・エネルギー－未来に向かって－」計4回の講座のうち、第2回「オゾン層破壊とフロン規制」を担当
地球電磁気・地球惑星圏学会一般講演会

2005/09 -

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京都市で行われた学会時の一般講演会「青少年のための最新「宇宙地球環境科学」入門」において、「教えて！はかせ！」コーナーの「南極はかせ」を担当
エコパートナーシップ2005 親子環境学習

2005/06 -

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環境週間の行事として行われたエコパートナーシップ2005の中で「地球温暖化ってなんだろう？」と題した小学4-6年生向けの講演を2回行った。
平成１６年度高校生のための東北大学公開講座

2004/08 -

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高校生に大学の授業を受講する機会を与え，学問に対する興味・関心や自ら学ぶ意欲を高める。「気圏・水圏・地圏の環境科学第１回全球的な大気の環境」を担当

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地球電磁気・地球惑星圏学会一般講演会

2004/09

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愛媛県松山市で行われた学会時の一般講演会「スーパープラネタリウム惑星探査の最前線から」において、「教えて！はかせ！」コーナーの「南極はかせ」を担当

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フーリエ変換型分光計で観測された大気微量成分の経年変動

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フーリエ変換型分光計で観測されたスペクトルから導出したHCl, C2H6, CH4, OCS等の大気微量成分の経年変動を調べ、その要因を解明する。
光学オゾンゾンデを用いた成層圏オゾンおよび二酸化窒素の観測

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東北大学で開発した光学オゾンゾンデに使用する分光器の感度特性試験や観測結果の解析に関する検討を行う。
フーリエ変換型分光計で観測された大気微量成分高度分布の変動

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フーリエ変換型分光計で観測されたスペクトルから導出したメタン等の大気微量成分の高度分布の変動を調べ、その要因を解明する。
光学およびECCオゾンゾンデを用いたオゾンおよび大気重力波の研究

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東北大学で開発した光学オゾンゾンデに使用する分光器の感度特性試験、同時観測を行うECCオゾンゾンデの事前準備等を行う。
フーリエ変換型分光計による対流圏微量成分高度分布の導出

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フーリエ変換型分光計を用いた地上分光観測スペクトルから、インバージョン法によって対流圏微量成分の高度分布を導出する方法を確立する。
フーリエ変換型分光計による大気微量成分高度分布の導出

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名古屋大学太陽地球環境研究所が北海道陸別に所有するフーリエ変換型分光計と東北大学・国立環境研究所がつくばに所有するフーリエ変換型分光計とを用いて、大気微量成分の高度分布を導出する手法を開発し検証を行う。
成層圏オゾン及び大気重力波観測

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宇宙科学研究本部の開発した超薄型気球に東北大の開発した光学オゾンゾンデおよびECCオゾンゾンデを搭載し、高度50kmまでのオゾン高度分布と重力波パラメータの観測を行う。
超薄型気球および光学オゾンゾンデを用いた成層圏オゾン観測

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宇宙科学研究本部の開発した超薄型気球に東北大の開発した光学オゾンゾンデを搭載し、高度50kmまでのオゾン高度分布観測を行う。
フーリエ変換型分光計による大気微量成分変動の観測

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名古屋大学太陽地球環境研究所が北海道陸別に所有するフーリエ変換型分光計と東北大学・国立環境研究所がつくばに所有するフーリエ変換型分光計とを用いて、大気微量成分経年変動の比較観測等を行う。
Varidation for BSMILES with ozonesondes

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情報通信研究機構の開発した気球搭載型ミリ波分光計の検証観測として光学オゾンゾンデおよびECCオゾンゾンデによる観測を行う。
衛星観測データを利用した極域オゾン層破壊の機構解明に関する研究

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ILAS-II観測と同期した、南北両半球高緯度における地上・気球データ等を用い、ILAS-IIデータの検証解析を行うことを目的とする。
ＧＰＳ付き改良型光学オゾンゾンデを用いた成層圏オゾン観測

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宇宙科学研究本部の開発した高高度気球に東北大の開発したＧＰＳ付き改良型光学オゾンゾンデを搭載し、高度50kmまでのオゾン高度分布観測を行う。
光学オゾンゾンデを用いた成層圏オゾン観測

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宇宙科学研究本部の開発した高高度気球に東北大の開発した光学オゾンゾンデを搭載し、高度40km以上までの上部成層圏オゾン高度分布観測を行う。
光学オゾンゾンデを用いた成層圏オゾン観測

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宇宙科学研究本部の開発した高高度気球に東北大の開発した光学オゾンゾンデを搭載し、高度40km以上までの上部成層圏オゾン高度分布観測を行う。
フーリエ変換型分光計による大気微量成分高度分布観測

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名古屋大学太陽地球環境研究所が北海道陸別に所有するフーリエ変換型分光計と東北大学・国立環境研究所がつくばに所有するフーリエ変換型分光計とを用いて、高度分布導出法の開発や大気微量成分経年変動の比較観測等を行う。
Observation of the Antarctic stratospheric ozone with the balloon-borne optical sensors for ozone

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高高度気球及びECCオゾンゾンデを用いて昭和基地において地上から高度40km以上までのオゾン高度分布を観測し、オゾン変動や大気重力波の解析を行う。
衛星データを利用したオゾン層変動の機構解明に関する研究

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2002年12月に打ち上げられたADEOS-II衛星搭載ILAS-IIの地上検証及び比較観測のための、フーリエ変換型分光計を用いた大気微量成分高度分布観測の手法を確立した。
光学オゾンゾンデを用いた成層圏オゾン観測

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宇宙科学研究本部の開発した高高度気球に東北大の開発した光学オゾンゾンデを搭載し、高度40km以上までの上部成層圏オゾン高度分布観測を行う。
フーリエ変換型分光計による成層圏・対流圏大気微量成分観測

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名古屋大学太陽地球環境研究所が北海道陸別に所有するフーリエ変換型分光計と東北大学・国立環境研究所がつくばに所有するフーリエ変換型分光計とを用いて、成層圏・対流圏大気微量成分変動に関する観測を行う。
光学オゾンゾンデを用いた成層圏オゾン観測

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宇宙科学研究本部の開発した高高度気球に東北大の開発した光学オゾンゾンデを搭載し、高度40km以上までの上部成層圏オゾン高度分布観測を行う。
フーリエ変換型分光計による中緯度大気微量成分観測

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名古屋大学太陽地球環境研究所が北海道陸別に所有するフーリエ変換型分光計と東北大学・国立環境研究所がつくばに所有するフーリエ変換型分光計とを用いて、中緯度大気微量成分変動に関する観測を行う。
オゾン層の回復を妨げる要因の解明に関する研究

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オゾン及び関連成分を高精度に観測するためのフーリエ変換型分光計を用いた大気微量成分高度分布観測の手法を開発した。
光学オゾンゾンデを用いた成層圏オゾン観測

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宇宙科学研究本部の開発した高高度気球に東北大の開発した光学オゾンゾンデを搭載し、高度40km以上までの上部成層圏オゾン高度分布観測を行う。
赤外分光観測による中緯度大気微量成分変動の研究

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名古屋大学太陽地球環境研究所が北海道陸別に所有するフーリエ変換型分光計と東北大学・国立環境研究所がつくばに所有するフーリエ変換型分光計とを用いて、中緯度大気微量成分変動に関する観測を行う。
光学オゾンゾンデを用いた成層圏オゾン観測

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宇宙科学研究本部の開発した高高度気球に東北大の開発した光学オゾンゾンデを搭載し、高度40km以上までの上部成層圏オゾン高度分布観測を行う。
赤外分光観測による中緯度成層圏オゾン減少の研究

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名古屋大学太陽地球環境研究所が北海道陸別に所有するフーリエ変換型分光計と東北大学・国立環境研究所がつくばに所有するフーリエ変換型分光計とを用いて、中緯度オゾン減少に関する観測を行う。
Observation of the trace species with Fourier transfer spectrometer

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国立環境研究所内に設置したフーリエ変換型分光計を用いて大気微量成分の観測を行い、またそのデータからの高度分布導出方法の開発を行う。
赤外分光観測による中緯度オゾン減少の研究

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名古屋大学太陽地球環境研究所が北海道陸別に所有するフーリエ変換型分光計と東北大学が所有するレーザーヘテロダイン分光計とを用いて、中緯度オゾン減少に関する観測を行う。
光学オゾンゾンデを用いた成層圏オゾン観測

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宇宙科学研究本部の開発した高高度気球に東北大の開発した光学オゾンゾンデを搭載し、高度40km以上までの上部成層圏オゾン高度分布観測を行う。
Observation of the stratospheric ozone with the balloon-borne optical sensors for ozone

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本研究室で開発した光学オゾンゾンデを宇宙科学研究本部の開発した高高度気球に搭載し、上部成層圏のオゾンの直接観測を行う。
衛星データ等を活用したオゾン層破壊機構の解明及びモデル化に関する研究

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1996年10月に打ち上げられた地球観測衛星ADEOS衛星搭載RIS, ILASの検証のため、レーザーヘテロダイン分光計を用いたオゾン及び関連成分の高度分布観測を行った。また、フーリエ変換型分光計をつくばに導入し観測を開始した。

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