Investigation of detailed water cycle processes in atmosphere and land surface using stable water isotope data assimilation system

• Project/Area Number: 26289160
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• 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)
• Co-Investigator(Kenkyū-buntansha): 金 元植 国立研究開発法人農業環境技術研究所, 大気環境研究領域, 主任研究員 (40414502)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000); Fiscal Year 2016: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2015: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2014: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
• Keywords: 水同位体比 / 気候プロキシ / 千年再解析 / 蒸発散フラックス / データ同化 / 陸面過程 / 成分分離 / 蒸散寄与率 / 水安定同位体 / 大気大循環モデル / 陸面過程モデル / 地球水循環 / 水安定同位体比 / 分校分析 / 気候復元 / 大気循環 / 分光分析

Outline of Final Research Achievements

In this project, we developed a new vapor isotope continuous measurement system to understand the land water cycle process in more detail. Compared to conventional mass spectrometric methods, by using laser spectroscopic technique, it is possible to increase the measurement frequency and precision of vapor isotope and moreover to dramatically improve the estimation precision and time resolution of the evapotranspiration isotope and transpiration fraction. Furthermore, due to portability and ease of management, it was succeeded in acquiring continuous data over three years from the test observation paddy. Based on the results, we developed a transpiration fraction estimation method applicable to the whole world, and estimated the value of 57±7% as the global mean. Regarding the transpiration fraction, various values were published ranging 20% to 90% in the past few years, which was a big controversy, but the value based on this observation data may settle the dispute.

Research Products

• [Int'l Joint Research] San Diego State University/Scripps Institution of Oceanography(米国)
• [Journal Article] Development and evaluation of a system of proxy data assimilation for paleoclimate reconstruction (2017)
  • Author(s): Okazaki, A. and K. Yoshimura
  • Journal Title: Clim. Past Volume: -
  • DOI: 10.5194/cp-2016-12
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [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 / Acknowledgement Compliant
• [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] 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] 水同位体比情報を用いたデータ同化 (2016)
  • Author(s): 芳村圭
  • Journal Title: 水文科学会誌 Volume: 46 Pages: 87-99
  • NAID: 130005408931
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Historical dynamical downscaling for East Asia with the atmosphere and ocean coupled regional model (2016)
  • Author(s): Ham, S., K. Yoshimura, H. Li
  • Journal Title: J. Meteor. Soc. Japan Volume: 94 Issue: 0 Pages: 199-208
  • DOI: 10.2151/jmsj.2015-046
  • NAID: 130005125549
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Verification of the isotopic composition of precipitation simulated by a regional isotope circulation model over Japan (2016)
  • Author(s): Tanoue, M., K. Ichiyanagi and K. Yoshimura
  • Journal Title: Isotopes in Environmental and Health Studies Volume: - Issue: 4-5 Pages: 1-14
  • DOI: 10.1080/10256016.2016.1148695
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Understanding the variability of water isotopologues in near-surface atmospheric moisture over a humid subtropical rice paddy in Tsukuba, Japan (2016)
  • Author(s): Wei, Z., K. Yoshimura, A. Okazaki, K. Ono, W. Kim, M. Yokoi, C.-T. Lai
  • Journal Title: J. Hydrol. Volume: 533 Pages: 91-102
  • DOI: 10.1016/j.jhydrol.2015.11.044
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] 高解像度河川氾濫過程の導入が大気大循環モデルの推計値に及ぼす影響 (2016)
  • Author(s): 鳩野美佐子, 芳村圭, 荒川隆, 山崎大, 沖大幹
  • Journal Title: 土木学会論文集B1(水工学) Volume: 72
  • NAID: 130005311928
  • Peer Reviewed
• [Journal Article] 平成27年9月関東・東北豪雨による茨城県常総市における鬼怒川洪水に関する調査及び考察 (2016)
  • Author(s): 芳村 圭, 中村晋一郎, 鳩野美佐子, 向田清峻, 石塚悠太, 内海信幸, 木口雅司, 金炯俊, 乃田啓吾, 牧野達哉, 鼎信次郎, 沖大幹
  • Journal Title: 土木学会論文集B1(水工学) Volume: 72
  • NAID: 130005311977
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Development and implementation of river-routing process module in a regional climate model and its evaluation in Korean river basins (2015)
  • Author(s): Lee, J.-W., S.-Y. Hong, J.-E. E. Kim, K. Yoshimura, S. Ham, M. Joh
  • Journal Title: J. Geophys. Res. Atmos. Volume: 120 Issue: 10 Pages: 4613-4629
  • DOI: 10.1002/2014jd022698
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Partitioning of evapotranspiration using high frequency water vapor isotopic measurement over a rice paddy field (2015)
  • Author(s): Wei, Z., K. Yoshimura, A. Okazaki, W. Kim, Z. Liu, M. Yokoi
  • Journal Title: Water Resour. Res. Volume: 51(5) Issue: 5 Pages: 3716-3729
  • DOI: 10.1002/2014wr016737
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Stable Water Isotopes in Climatology, Meteorology, and Hydrology: A Review (2015)
  • Author(s): Yoshimura, K., . , 93, doi:, 2015
  • Journal Title: Journal of the Meteorological Society of Japan. Ser. II Volume: 93 Issue: 5 Pages: 513-533
  • DOI: 10.2151/jmsj.2015-036
  • NAID: 130005110008
  • ISSN: 0026-1165, 2186-9057
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Modeling low salinity waters along the coast around Japan using a high resolution river discharge data set (2015)
  • Author(s): Urakawa, L. S., M. Kurogi, K. Yoshimura and H. Hasumi
  • Journal Title: Journal of Oceanography Volume: 71 Issue: 6 Pages: 715-739
  • DOI: 10.1007/s10872-015-0314-4
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Assessing future climate changes in the East Asian summer and winter monsoon using Regional Spectral Model (2015)
  • Author(s): Ham, S., J.-W. Lee and K. Yoshimura
  • Journal Title: J. Meteor. Soc. Japan Volume: 93 Issue: 0 Pages: 69-87
  • DOI: 10.2151/jmsj.2015-051
  • NAID: 130005125548
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Recent contrasting winter temperature changes over North America linked to enhanced positive Pacific North American pattern (2015)
  • Author(s): Liu, Z., Z. Jian, K. Yoshimura, N. H. Buenning, C. J. Poulsen, and G. J. Bowen
  • Journal Title: Geophys. Res. Let. Volume: 42 Issue: 18 Pages: 7750-7757
  • DOI: 10.1002/2015gl065656
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The GRENE-TEA Model Intercomparison Project (GTMIP): overview and experiment protocol for Stage 1 (2015)
  • Author(s): S. Miyazaki, K. Saito, J. Mori, T. Yamazaki, T. Ise, H. Arakida, T. Hajima, Y. Iijima, H. Machiya, T. Sueyoshi, H. Yabuki, E. J. Burke, M. Hosaka, K. Ichii, H. Ikawa, A. Ito, A. Kotani, Y. Matsuura, M. Niwano, T. Nitta, R. Oishi, T. Ohta, H. Park, T. Sasai, A. Sato, H. Sato, A. Sugimoto, R. Suzuki
  • Journal Title: Geoscientific Model Development Volume: 8 Issue: 9 Pages: 2841-2856
  • DOI: 10.5194/gmd-8-2841-2015
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A semi-Lagrangian advection scheme for radioactive tracers in the NCEP Regional Spectral Model (RSM) (2015)
  • Author(s): Chang, E.-C. and K. Yoshimura
  • Journal Title: Geosci. Model Dev. Volume: 8 Issue: 10 Pages: 3247-3255
  • DOI: 10.5194/gmd-8-3247-2015
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Late-glacial to late-Holocene shifts in global precipitation δ18O (2015)
  • Author(s): Jasechko, S., A. Lechler, F. S. R. Pausata, P. J. Fawcett, T. Gleeson, D. I. Cendón, J. Galewsky, A. N. LeGrande, C. Risi, Z. D. Sharp, J. M. Welker, M. Werner, and K. Yoshimura,
  • Journal Title: Clim. Past Volume: 11 Issue: 10 Pages: 1375-1393
  • DOI: 10.5194/cp-11-1375-2015
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] SIMULATION OF RADIOACTIVE TRACER TRANSPORT USING ISORSM AND UNCERTAINTY ANALYSES (2015)
  • Author(s): Saya, A., K. Yoshimura, T. Oki
  • Journal Title: Journal of JSCE Volume: 3 Issue: 1 Pages: 60-66
  • DOI: 10.2208/journalofjsce.3.1_60
  • NAID: 130004979750
  • ISSN: 2187-5103
  • Peer Reviewed
• [Journal Article] Global-scale remote sensing of water isotopologues in the troposphere: representation of first-order isotope effects (2015)
  • Author(s): Sutanto, S.J., G. Hoffmann, R.A. Scheepmaker, J. Worden, S. Houweling, K. Yoshimura, I. Aben, and T. Roeckmann
  • Journal Title: Atmos. Meas. Tech. Volume: 8 Issue: 3 Pages: 999-1019
  • DOI: 10.5194/amt-8-999-2015
  • Peer Reviewed
• [Journal Article] Interannual variation of vapor isotope in West Africa and its relation to ENSO (2015)
  • Author(s): Okazaki, A., Y. Satoh, G. Tremoy, F. Vimeux, R. Scheepmaker, and K. Yoshimura
  • Journal Title: Atmospheric Chemistry and Physics Volume: 15 Issue: 6 Pages: 3193-3204
  • DOI: 10.5194/acp-15-3193-2015
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] The Diurnal Cycle of Precipitation in Regional Spectral Model Simulations over West Africa: Sensitivities to Resolution and Cumulus Schemes (2015)
  • Author(s): He, X., H. Kim, P.-E. Kirstetter, K. Yoshimura, E.-C. Chang, C. R. Ferguson, J. M. Erlingis, Y. Hong, T. Oki
  • Journal Title: Weather and Forecasting Volume: N/A
  • Peer Reviewed
• [Journal Article] Proxy interpretation of coral-recorded seawater δ18O using 1D model forced by isotope-incorporated GCM in tropical oceanic regions (2014)
  • Author(s): Liu, G., K. Kojima, K. Yoshimura, A. Oka
  • Journal Title: J. Geophys. Res. Atmos. Volume: 119 Issue: 21
  • DOI: 10.1002/2014jd021583
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Future changes in surface runoff over Korea projected by a regional climate model under A1B scenario (2014)
  • Author(s): Lee, J.-W., S. Ham, S.-Y. Hong, K. Yoshimura, M. Joh
  • Journal Title: Advances in Meteorology Volume: N/A Pages: 1-8
  • DOI: 10.1155/2014/753790
  • Peer Reviewed
• [Journal Article] Distribution of Oxygen Isotope Ratio of Precipitation in the Atlantic-Indian Sectors of the Southern Ocean (2014)
  • Author(s): Nakamura, K., S. Aoki, K. Yoshimura, N. Kurita
  • Journal Title: SOLA Volume: 10 Issue: 0 Pages: 154-157
  • DOI: 10.2151/sola.2014-032
  • NAID: 130004694332
  • ISSN: 1349-6476
  • Peer Reviewed
• [Journal Article] Large-scale vapor transport of remotely evaporated seawater by a Rossby wave response to typhoon forcing during the Baiu/Meiyu season as revealed by the JRA-55 reanalysis (2014)
  • Author(s): Kudo, T., R. Kawamura, H. Hirata, K. Ichiyanagi, M. Tanoue, K. Yoshimura
  • Journal Title: Journal of Geophysical Research: Atmospheres Volume: 119 Issue: 14 Pages: 8825-8838
  • DOI: 10.1002/2014jd021999
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Observation System Simulation Experiments using Water Vapor Isotope Information (2014)
  • Author(s): Yoshimura, K., T. Miyoshi, M. Kanamitsu
  • Journal Title: J.Geophys. Res. Atmos. Volume: 119 Issue: 13 Pages: 7842-7862
  • DOI: 10.1002/2014jd021662
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Oxygen isotopes as a valuable tool for measuring annual growth in tropical trees that lack distinct annual rings (2014)
  • Author(s): Xu, C., M. Sano, K. Yoshimura, T. Nakatsuka
  • Journal Title: GEOCHEMICAL JOURNAL Volume: 48 Issue: 4 Pages: 371-378
  • DOI: 10.2343/geochemj.2.0312
  • NAID: 130004678557
  • ISSN: 0016-7002, 1880-5973
  • Peer Reviewed
• [Journal Article] On the low-frequency component of the ENSO-Indian monsoon relationship: a paired proxy perspective (2014)
  • Author(s): Berkelhammer, M., A. Sinha, M. Mudelsee, H. Cheng, K. Yoshimura, and J. Biswas
  • Journal Title: Climate of Past Volume: 10 Issue: 2 Pages: 733-744
  • DOI: 10.5194/cp-10-733-2014
  • Peer Reviewed
• [Journal Article] Orographic Effect on the Precipitation with Typhoon Washi in the Mindanao Island of the Philippines (2014)
  • Author(s): Minamide, M. and K. Yoshimura
  • Journal Title: SOLA Volume: 10 Issue: 0 Pages: 67-71
  • DOI: 10.2151/sola.2014-014
  • NAID: 130004940843
  • ISSN: 1349-6476
  • Peer Reviewed
• [Journal Article] Paired oxygen isotope records reveal modern North American atmospheric dynamics during the Holocene (2014)
  • Author(s): Liu, Z., Yoshimura, K., Bowen G. J., Buenning, N. H., Risi C., Welker, J. M. and Yuan, F.
  • Journal Title: Nature Communications Volume: N/A Issue: 1
  • DOI: 10.1038/ncomms4701
  • Peer Reviewed
• [Presentation] Recent rapid advancement of stable water isotope measurement and modeling in precipitation process studies (2017)
  • Author(s): Kei Yoshimura
  • Organizer: The 6th Global Precipitation Measurement (GPM) Asia Workshop on Satellite Precipitation Data Utilization
  • Place of Presentation: Bangkok, Thailand
  • Year and Date: 2017-01-18
  • 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
• [Presentation] 平成27年9月関東・東北豪雨による茨城県常総市における鬼怒川洪水に関する調査及び考察 (2016)
  • Author(s): 芳村 圭・中村晋一郎・鳩野美佐子・向田清峻・石塚悠太・内海信幸・木口雅司・金 炯俊・乃田啓吾・ 牧野達哉・鼎信次郎・沖 大幹
  • Organizer: 第６０回水工学講演会
  • Place of Presentation: 東北工業大学（宮城県仙台市）
  • Year and Date: 2016-03-15
• [Presentation] 雲量データ同化による観測インパクト (2015)
  • Author(s): 芳村圭, 取出欣也
  • Organizer: 日本気象学会2015年度秋季大会
  • Place of Presentation: 京都テルサ（京都府京都市）
  • Year and Date: 2015-10-28
• [Presentation] 広域陸面モデリングの最前線～気候変動下の渇水リスクの求め方～ (2015)
  • Author(s): 芳村圭
  • Organizer: 平成27年度公開シンポジウム「気候変動のリスクを知る～リスク情報の使われ方～」
  • Place of Presentation: 一橋講堂（東京都千代田区）
  • Year and Date: 2015-10-13
• [Presentation] Validation of RCMs by using water isotope information (2015)
  • Author(s): Yoshimura,K.
  • Organizer: International Workshop on Issues in downscaling of climate change projection
  • Place of Presentation: エポカルつくば（茨城県つくば市）
  • Year and Date: 2015-10-07
  • Int'l Joint Research
• [Presentation] 水同位体情報を用いた水循環過程や古気候変動の解明 (2015)
  • Author(s): 芳村圭
  • Organizer: JpGU2015
  • Place of Presentation: 幕張メッセ（千葉県幕張市）
  • Year and Date: 2015-05-27
  • Invited
• [Presentation] 全球高解像度シミュレーションに向けた地表面過程モデリング (2015)
  • Author(s): 芳村圭
  • Organizer: 日本気象学会2015年度春季大会
  • Place of Presentation: エポカルつくば（茨城県つくば市）
  • Year and Date: 2015-05-24
  • Invited
• [Presentation] Can we analyze the past climate using the isotopic proxy information with data assimilation? (2014)
  • Author(s): Kei Yoshimura
  • Organizer: AGU Fall Meeting 2014
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2014-12-15 – 2014-12-19
• [Presentation] Atmosphere-ocean Coupled Regional Modeling for Dynamical Downscaling of Current and Future Climates (2014)
  • Author(s): Kei Yoshimura
  • Organizer: AOGS2014
  • Place of Presentation: ロイトン札幌、Sapporo
  • Year and Date: 2014-08-01
  • Invited
• [Presentation] 陸域生態系－水文－大気プロセス研究における水の安定同位体比情報利用の最前線 (2014)
  • Author(s): Kei Yoshimura
  • Organizer: JpGU2014
  • Place of Presentation: パシフィコ横浜、横浜
  • Year and Date: 2014-05-01
  • Invited
• [Funded Workshop] 14th International Regional Spectral Model (RSM) Workshop (2016)
  • Place of Presentation: Rio de Janeiro, Brazil
  • Year and Date: 2016-09-14