UMEZAWA Taku

ウメザワタク | UMEZAWA Taku

Research field (1)： Atmospheric and hydrospheric science

Research keywords (5)：炭素循環 , Methyl chloride , Aircraft observation , Isotope , Methane

Research theme for competitive and other funds (4)：

2023 - 2028 多成分気体分析に基づく成層圏物質循環の長期変動の評価
2023 - 2026 過去30年間で成層圏の大気循環は変化したか?:ハロカーボンの新規測定にもとづく推定
2017 - 2021 Accurate reconstruction of variations of methane isotopes over the last 50 years using halocarbon measurements of firn air
2010 - 2012 A study of global methane cycle over the last 130 kyrs based on Antarctic and Greenland deep ice cores

Papers (37)：

Naveen Chandra, Prabir K. Patra, Ryo Fujita, Lena Höglund-Isaksson, Taku Umezawa, Daisuke Goto, Shinji Morimoto, Bruce H. Vaughn, Thomas Röckmann. Methane emissions decreased in fossil fuel exploitation and sustainably increased in microbial source sectors during 1990-2020. Communications Earth & Environment. 2024
Hideki Nara, Takuya Saito, Taku Umezawa, Yasunori Tohjima. Supplementary material to "A high-accuracy dynamic dilution method for generating reference gas mixtures of carbonyl sulfide at sub-nanomole-per-mole levels for long-term atmospheric observation". 2024
Hideki Nara, Takuya Saito, Taku Umezawa, Yasunori Tohjima. A high-accuracy dynamic dilution method for generating reference gas mixtures of carbonyl sulfide at sub-nanomole-per-mole levels for long-term atmospheric observation. 2024
Akihiko Ito, Prabir K. Patra, Taku Umezawa. Bottom-Up Evaluation of the Methane Budget in Asia and Its Subregions. Global Biogeochemical Cycles. 2023
梅澤拓, 丹羽洋介, 斉藤拓也, 齋藤尚子, 豊田栄. 温室効果気体とオゾン層破壊物質. 大気化学研究. 2022. 47. 047A02

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MISC (29)：

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Lectures and oral presentations (13)：

RECONSTRUCTION OF PAST VARIATIONS OF THE CARBON AND HYDROGEN ISOTOPIC RATIOS IN ATMOSPHERIC METHANE FROM ITS VERTICAL DISTRIBUTION OBSERVED IN NGRIP FIRN
(Abstr Int Symp Arct Res 2013)
B203 航空機を用いた日本上空の対流圏メタンの観測(物質循環,一般口頭発表)
(大会講演予講集 2011)
航空機を用いた日本上空の対流圏メタンの観測
(日本気象学会大会講演予稿集 2011)
Observations of greenhouse gases in the polar regions
(極域科学・宙空圏・気水圏・生物・地学シンポジウム講演予稿集(CD-ROM) 2010)
P148 西太平洋上部/下部対流圏でのメタン濃度と炭素・水素安定同位体比の季節変動
(大会講演予講集 2009)

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Education (1)：

2004 - 2009 Tohoku University, Graduate School of Science Department of Geophysics

Work history (7)：

2021/04 - 現在 National Institute for Environmental Studies
2020/07 - 2021/03 National Institute for Environmental Studies Center for Environmental Measurement and Analysis Senior Researcher
2017/04 - 2020/06 National Institute for Environmental Studies Center for Environmental Measurement and Analysis Researcher
2014/11 - 2017/03 National Institute for Environmental Studies Center for Global Environment Research Postdoctoral Researcher
2011/10 - 2014/10 Max Planck Institute for Chemistry Atmospheric Chemistry Division Postdoctoral researcher

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Awards (2)：

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