Investigation of detailed water cycle processes in atmosphere and land surface using stable water isotope data assimilation system(Fostering Joint International Research)

• Project/Area Number: 15KK0199
• Research Category: Fund for the Promotion of Joint International Research (Fostering Joint International Research)
• Allocation Type: Multi-year Fund
• Research Field: Hydraulic engineering
• Research Institution: The University of Tokyo
• Principal Investigator: YOSHIMURA KEI 東京大学, 生産技術研究所, 准教授 (50376638)
• Research Collaborator: Lai Chun-Ta サンディエゴ州立大学, Department of Biology, 准教授 ; Gershunov Alexander スクリプス海洋学研究所, CASPO, 研究者
• Project Period (FY): 2016 – 2018
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥14,820,000 (Direct Cost: ¥11,400,000、Indirect Cost: ¥3,420,000)
• Keywords: 水安定同位体 / 蒸発散 / 植物活動 / 水蒸気同位体比 / 成分分離 / 地球水循環 / データ同化 / 同位体大循環モデル / 気候プロキシ

Outline of Final Research Achievements

Through this project, I stayed San Diego State University and Scripps Institution of Oceanography for 6 months in total. During then, vapor isotope observation data were collected from all over the world, and those papers that estimated transpiration fraction with various methods were compiled. Thus, the more accurate value of global transpiration fraction over total evapotranspiration was estimated. Furthermore, I evaluated the impact of vapor isotope observation by IASI spectrometric instrument on European satellite MetOp on improvement in analyses of atmospheric dynamic fields.

Academic Significance and Societal Importance of the Research Achievements

本課題では、32篇の論文出版や15件の学会発表を行うことが出来た。こうした効果的な研究活動ができたのも、国際共同研究加速の際の必須項目である海外研究機関への長期派遣（本課題では約半年間）があったからである。日常の膨大な数の会議から離れ、落ち着いた環境でじっくり研究について考えられる期間があることが、研究を進めるにあたって極めて大切であると痛感できた。ここにこのようなプログラムを考えてくださった方々に深く感謝したい。

Research Products

• [Int'l Joint Research] スクリプス海洋学研究所(米国) (2018)
  • Year and Date: 2018-03-18
• [Int'l Joint Research] サンディエゴ州立大学(米国) (2018)
• [Int'l Joint Research] サンディエゴ州立大学(米国) (2016)
• [Journal Article] A global database on high-frequency isotopic compositions of water vapour measured with infrared isotopic spectroscopy near the Earth surface (2019)
  • Author(s): Wei,Z., X.Lee, F.Aemisegger, M.Benetti, M.Berkelhammer, M.Casado, K.Caylor, E.Christner, C.Dyroff, O.Garciacutea, Y.Gonzacutelez, T.Griffis, N.Kurita, J.Liang, M.-C. Liang, G.Lin, D.Noone, K.Gribanov, N. C.Munksgaard, M. Schneider, F.Ritter, H.C.Steen-Larsen, C.Vallet-Coulomb, X Wen, J.S.Wright, W.Xiao and K.Yoshimura
  • Journal Title: Scientific Data Volume: 6 Issue: 1 Pages: 180302-180302
  • DOI: 10.1038/sdata.2018.302
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Perspective of Isotope Hydrometeorology (2018)
  • Author(s): YOSHIMURA Kei
  • Journal Title: JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES Volume: 31 Issue: 6 Pages: 554-559
  • DOI: 10.3178/jjshwr.31.554
  • NAID: 130007556918
  • ISSN: 0915-1389, 1349-2853
  • Year and Date: 2018-11-05
  • Peer Reviewed / Open Access
• [Journal Article] Seasonal variation in isotopic composition and the origin of precipitation over Bangladesh (2018)
  • Author(s): Tanoue Masahiro、Ichiyanagi Kimpei、Yoshimura Kei、Kiguchi Masashi、Terao Toru、Hayashi Taiichi
  • Journal Title: Progress in Earth and Planetary Science Volume: 5 Issue: 1
  • DOI: 10.1186/s40645-018-0231-4
  • Peer Reviewed / Open Access
• [Journal Article] Precipitation Redistribution Method for Regional Simulations of Radioactive Material Transport During the Fukushima Daiichi Nuclear Power Plant Accident (2018)
  • Author(s): Saya Akane、Yoshikane Takao、Chang Eun-Chul、Yoshimura Kei、Oki Taikan
  • Journal Title: Journal of Geophysical Research: Atmospheres Volume: 123 Issue: 18
  • DOI: 10.1029/2018jd028531
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Dispersion characteristics of radioactive materials estimated by wind patterns (2018)
  • Author(s): Yoshikane Takao、Yoshimura Kei
  • Journal Title: Scientific Reports Volume: 8 Issue: 1
  • DOI: 10.1038/s41598-018-27955-4
  • Peer Reviewed / Open Access
• [Journal Article] Stable isotopes in water vapor and rainwater over Indian sector of Southern Ocean and estimation of fraction of recycled moisture (2018)
  • Author(s): Rahul P.、Prasanna K.、Ghosh Prosenjit、Anilkumar N.、Yoshimura Kei
  • Journal Title: Scientific Reports Volume: 8 Issue: 1
  • DOI: 10.1038/s41598-018-25522-5
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The effect of monsoon circulation on the stable isotopic composition of rainfall (2018)
  • Author(s): Midhun M, Lekshmy PR, Ramesh R, K. Yoshimura, Sandeep KK, S. Kumar, R.Sinha, A. Singh and S. Srivastava
  • Journal Title: J. Geophys. Res. Atmos. Volume: 123 Issue: 10 Pages: 5205-5221
  • DOI: 10.1029/2017jd027427
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Influences of large-scale convection and moisture source on monthly precipitation isotope ratios observed in Thailand, Southeast Asia (2018)
  • Author(s): Wei Zhongwang、Lee Xuhui、Liu Zhongfang、Seeboonruang Uma、Koike Masahiro、Yoshimura Kei
  • Journal Title: Earth and Planetary Science Letters Volume: 488 Pages: 181-192
  • DOI: 10.1016/j.epsl.2018.02.015
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 気候プロキシデータ同化における観測インパクトの時空間偏在性に関する考察 (2018)
  • Author(s): 庄司悟、岡﨑淳史、芳村圭
  • Journal Title: 水工学論文集 Volume: 74 Pages: 49-54
  • NAID: 130007757804
  • Peer Reviewed
• [Journal Article] Moisture rainout fraction over the Indian Ocean during austral summer based on 18O/16O ratios of surface sea water, rainwater at latitude range of 10°N-60°S (2018)
  • Author(s): Prasanna, K., P. Ghosh, S.K. Bhattacharya, P. Rahul, K. Yoshimura, N. Anilkumar
  • Journal Title: Journal of Earth System Science Volume: 印刷中
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] 短寿命気候汚染物質による陸域水循環への影響 (2018)
  • Author(s): 芳村圭、新田友子、石塚悠太、多田真嵩、鈴木健太郎、竹村俊彦
  • Journal Title: 土木学会論文集B1(水工学) Volume: 74
  • NAID: 130007628197
  • Peer Reviewed
• [Journal Article] 深層学習を用いた水文気象場のダウンスケーリング手法の開発 (2018)
  • Author(s): 板谷知明、芳村圭
  • Journal Title: 土木学会論文集B1(水工学) Volume: 74
  • NAID: 130006236414
  • Peer Reviewed
• [Journal Article] 領域大気海洋結合モデルの不確実性の検証 (2018)
  • Author(s): 森山文晶、芳村圭、筆保弘徳
  • Journal Title: 土木学会論文集B1(水工学) Volume: 74
  • NAID: 130007628208
  • Peer Reviewed
• [Journal Article] Evaluating hydrological influences on mid-latitude δ18Op in the Middle East (2017)
  • Author(s): Reuter Justin、Buenning Nikolaus、Yoshimura Kei
  • Journal Title: Climate Dynamics Volume: 9 Issue: 9-10 Pages: 1-18
  • DOI: 10.1007/s00382-017-3798-3
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Development and evaluation of a system of proxy data assimilation for paleoclimate reconstruction (2017)
  • Author(s): Atsushi Okazaki, Kei Yoshimura
  • Journal Title: Climate of the Past Volume: 13 Issue: 4 Pages: 379-393
  • DOI: 10.5194/cp-13-379-2017
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Chronological development of terrestrial mean precipitation (2017)
  • Author(s): Park, K.J., K. Yoshimura, H. Kim, and T. Oki
  • Journal Title: Bulletin of American Meteorological Society Volume: - Issue: 11 Pages: 2411-2427
  • DOI: 10.1175/bams-d-16-0005.1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Feasibility Study of the Reconstruction of Historical Weather with Data Assimilation (2017)
  • Author(s): Toride, K., P. Neluwala, H.J. Kim, and K. Yoshimura
  • Journal Title: Monthly Weather Review Volume: - Issue: 9 Pages: 3563-3580
  • DOI: 10.1175/mwr-d-16-0288.1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Seasonal-scale dating of a shallow ice core from Greenland using oxygen isotope matching between data and simulation. (2017)
  • Author(s): Ryoto Furukawa, Ryu Uemura, Koji Fujita, Jesper Sjolte, Kei Yoshimura, Sumito Matoba, and Yoshinori Iizuka
  • Journal Title: Journal of Geophysical Research: Atmospheres Volume: 122 Issue: 20 Pages: 10873-10887
  • DOI: 10.1002/2017jd026716
  • NAID: 120006466468
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Impact of arctic wetlands on the climate system: Model sensitivity simulations with the MIROC5 AGCM and a wetland scheme (2017)
  • Author(s): Nitta, T., K. Yoshimura, A. Abe-Ouchi
  • Journal Title: Journal of Hydrometeorology Volume: - Issue: 11 Pages: 2923-2936
  • DOI: 10.1175/jhm-d-16-0105.1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Estimation of the isotopic composition and origins of winter precipitation over Japan using a regional isotope circulation model (2017)
  • Author(s): Tanoue, M., K. Ichiyanagi, K. Yoshimura, J. Shimada, and Y. Hirabayashi
  • Journal Title: Journal of Geophysical Research Atmosphere Volume: - Issue: 21 Pages: 11621-11637
  • DOI: 10.1002/2017jd026751
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] VALIDATION OF RIVER DISCHARGE FROM A TERRESTRIAL MODEL WITH 1KM RESOLUTION OVER JAPAN (2017)
  • Author(s): 藪優太郎，芳村圭，Hyungjun KIM，新田友子，鳩野美佐子，石塚悠太，向田清峻，可知美佐子，沖大幹
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) Volume: 73 Issue: 5 Pages: I_71-I_79
  • DOI: 10.2208/jscejer.73.I_71
  • NAID: 130006309626
  • ISSN: 2185-6648
  • Peer Reviewed
• [Journal Article] Determining factor of vapor isotope ratio during Kanto-Tohoku heavy rain 2015 at Mase Tsukuba city (2017)
  • Author(s): 野本大輔，芳村圭
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) Volume: 73 Issue: 5 Pages: I_275-I_281
  • DOI: 10.2208/jscejer.73.I_275
  • NAID: 130006309577
  • ISSN: 2185-6648
  • Peer Reviewed / Open Access
• [Journal Article] Revisiting the contribution of transpiration to global terrestrial evapotranspiration (2017)
  • Author(s): Wei, Z., K. Yoshimura, L. Wang, D. Miralles, S. Jasechko, X. Lee
  • Journal Title: Geophys. Res. Let. Volume: - Issue: 6 Pages: 2792-2801
  • DOI: 10.1002/2016gl072235
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] An estimation of water origins in the vicinity of a tropical cyclone’s center and associated dynamic processes (2017)
  • Author(s): Takakura, T., R. Kawamura, T. Kawano, K. Ichiyanagi, M. Tanoue, and K. Yoshimura
  • Journal Title: Climate Dynamics Volume: - Issue: 1-2 Pages: 555-569
  • DOI: 10.1007/s00382-017-3626-9
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Sensitivity evaluation of spectral nudging schemes in historical dynamical downscaling for South Asia (2017)
  • Author(s): Ramzan, M., S. Ham, M. Amjad, E.-C. Chang and K. Yoshimura
  • Journal Title: Advances in Meteorology Volume: -
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Evaluating the skills of isotope-enabled general circulation models against in situ atmospheric water vapor isotope observations (2017)
  • Author(s): Steen-Larsen, H.C., C. Risi, M. Werner, K. Yoshimura, V. Masson-Delmotte
  • Journal Title: J. Geophys. Res. Atmos. Volume: - Issue: 1 Pages: 246-263
  • DOI: 10.1002/2016jd025443
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] El Nino Southern Oscillation Signature in Atmospheric Water Isotopes over Maritime Continent during Wet Season (2017)
  • Author(s): Suwarman, R., K. Ichiyanagi, M. Tanoue, K. Yoshimura, S. Mori, M. Yamanaka, F. Syamsudin
  • Journal Title: J. Meteor. Soc. Japan Volume: -
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Controlling factors of rainwater and water vapor isotopes at Bangalore, India: Constraints from observations in 2013 Indian monsoon (2016)
  • Author(s): Rahul P., P. Ghosha, S.K. Bhattacharya and K. Yoshimura
  • Journal Title: J. Geophs. Res. Atmos. Volume: - Issue: 23
  • DOI: 10.1002/2016jd025352
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Long-distance transport of radioactive plume by nocturnal local winds (2016)
  • Author(s): Yoshikane, T., K. Yoshimura, E.-C. Chang, A. Saya, and T. Oki
  • Journal Title: Scientific Reports Volume: 6 Issue: 1
  • DOI: 10.1038/srep36584
  • NAID: 120006347248
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Intraseasonal Variability of δ¹⁸O of Precipitation over the Indonesian Maritime Continent Related to the Madden–Julian Oscillation (2016)
  • Author(s): Belgaman, H. A., K. Ichiyanagi, M. Tanoue, R. Suwarman, K. Yoshimura, S. Mori, N. Kurita, M. D. Yamanaka, F. Syamsudin
  • Journal Title: SOLA Volume: 12 Issue: 0 Pages: 192-197
  • DOI: 10.2151/sola.2016-039
  • NAID: 130005255019
  • ISSN: 1349-6476
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The response of winter Pacific North American pattern to the largest volcanic eruptions (2016)
  • Author(s): Liu, Z., K. Yoshimura, N. Buenning, Z. Jian
  • Journal Title: Clim. Dyn., Volume: - Issue: 11-12 Pages: 3599-3614
  • DOI: 10.1007/s00382-016-3287-0
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Interannual controls on oxygen isotope variability in Asian Monsoon precipitation and implications for paleoclimate reconstructions (2016)
  • Author(s): Yang, H., K.R. Johnson, M.L. Griffiths, K. Yoshimura
  • Journal Title: Journal of Geophysical Research, Atmospheres Volume: 121 Issue: 14 Pages: 8410-8428
  • DOI: 10.1002/2015jd024683
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Data Assimilations for Millennium Reanalysis (2019)
  • Author(s): Kei Yoshimura
  • Organizer: Joint US-Japan Workshop on Climate Change and Variability
  • Int'l Joint Research
• [Presentation] Data Assimilation of Water Isotope Information for Constraining Hydrolmeteorological Processes (2018)
  • Author(s): Kei Yoshimura
  • Organizer: AOGS2018
  • Int'l Joint Research / Invited
• [Presentation] An online data assimilation method to assimilate time-averaged observations (2018)
  • Author(s): Atsushi Okazaki, Takemasa Miyoshi, Kei Yoshimura, Fuqing Zhang
  • Organizer: AGU Fall Meeting 2018
  • Int'l Joint Research
• [Presentation] 気候プロキシデータ同化における観測インパクトの時空間偏在性に関する考察 (2018)
  • Author(s): 庄司 悟・岡﨑淳史・芳村 圭
  • Organizer: 第63回水工学講演会
• [Presentation] Reconstruction of Historical Weather Using Personal Weather Diaries (2018)
  • Author(s): Panduka Neluwala and Kei Yoshimura
  • Organizer: The 11th annual ACRE meeting
  • Int'l Joint Research
• [Presentation] 水蒸気同位体データ同化による気象予測改善に向けて (2018)
  • Author(s): 多田真嵩, 芳村圭
  • Organizer: 気象学会2018年度秋季大会
• [Presentation] 信号処理分野の先端技術導入による新たな古気候復元手法の提案 (2018)
  • Author(s): 原田央, 芳村圭, 水谷司
  • Organizer: 水文水資源学会2018年度研究発表会
• [Presentation] 水蒸気同位体データ同化による気象予測改善 (2018)
  • Author(s): 多田 真嵩、芳村 圭
  • Organizer: JpGU2018
• [Presentation] 気候プロキシを用いたデータ同化による千年紀気候復元 (2018)
  • Author(s): 庄司 悟、岡﨑 淳史、芳村 圭
  • Organizer: JpGU2018
• [Presentation] Toward online data assimilation for the millennium reanalysis (2018)
  • Author(s): Okazaki Atsushi、三好 建正、芳村 圭、Zhang Fuqing
  • Organizer: JpGU2018
• [Presentation] Data assimilation of Isotopic information for multi centennial atmospheric reanalysis (2017)
  • Author(s): Kei Yoshimura
  • Organizer: International Workshop on Isotopes for Tropical Ecosystem Studies, San Jose, Costa Rica
  • Int'l Joint Research / Invited
• [Presentation] Transpiration accounts for two thirds of global terrestrial evaporation (2016)
  • Author(s): Zhongwang Wei, Kei Yoshimura, Xuhui Lee, Lixin Wang, Diego G. Miralles, Scott Jasechko
  • Organizer: AGU Fall Meeting 2016
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2016-12-12
  • Int'l Joint Research
• [Presentation] Future stable water isotope projection with an isotope-AGCM driven by CMIP5 SSTs (2016)
  • Author(s): Kei Yoshimura
  • Organizer: AGU Fall Meeting 2016
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2016-12-12
  • Int'l Joint Research
• [Presentation] Data assimilation with stable water isotope information (2016)
  • Author(s): Kei Yoshimura
  • Organizer: EGU Leonardo conference 2016
  • Place of Presentation: Ourense, Spain
  • Year and Date: 2016-10-25
  • Int'l Joint Research / Invited
• [Presentation] Isotope data assimilation: Applications for modern hydrology and paleoclimatology (2016)
  • Author(s): Kei Yoshimura
  • Organizer: Technical Meeting on "Reappraising the Use of Data on Isotopes in Precipitation
  • Place of Presentation: Vienna, Austria
  • Year and Date: 2016-09-14
  • Int'l Joint Research / Invited
• [Remarks] Yoshimura Lab's HP
  • URL: http://isotope.iis.u-tokyo.ac.jp