Development of isotope-incorporated atmosphere and ocean coupled climate model for comprehensive understanding of climate proxies
| Project/Area Number |
23686071
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Hydraulic engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
YOSHIMURA KEI 東京大学, 大気海洋研究所, 准教授 (50376638)
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| Project Period (FY) |
2011-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥23,790,000 (Direct Cost: ¥18,300,000、Indirect Cost: ¥5,490,000)
Fiscal Year 2013: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Fiscal Year 2012: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2011: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
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| Keywords | 水安定同位体比 / 結合大循環モデル / 気候プロキシ / データ同化 / 古気候 / 20世紀再解析 / セルロース同位体比 / 海洋循環 / アンサンブルカルマンフィルタ |
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| Outline of Final Research Achievements |
Isotope atmosphere-ocean coupled model has been developed. The simulated results were compared with satellite-based vapor isotope data, and vertical structure and advection process in the atmosphere were investigated. The results indicated that the mid-tropospheric vapor isotope ratio is influenced by re-evaporation of falling droplet inside clouds over western Pacific and Maritime regions. The method for comparing simulated seawater isotope ratio and coral isotope data has been established. It is revealed that simple 1-dimensional mixing model can simulate the interannual and seasonal variations of seawater isotope ratio, but the ocean current and freshwater impact is large in the places close to big river mouths or delta region. Furthermore, isotope data assimilation system has been developed in the first place in the world.
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Report
(4 results)
Research Products
(60 results)
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[Journal Article] The key role of heavy precipitation events in climate model disagreements of future annual precipitation changes in California2013
Author(s)
Pierce, D., D. Cayan, T. Das, E. Maurer, N. Miller, Y. Bao, M. Kanamitsu, K. Yoshimura, M. Snyder, L. Sloan, G. Franco, and M. Tyree
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Journal Title
Journal of Climate
Volume: 26
Issue: 16
Pages: 5879-5896
DOI
Related Report
Peer Reviewed
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[Journal Article] A model-based test of accuracy of seawater oxygen isotope ratio record derived from a coral dual proxy method at southeastern Luzon Island, the Philippines2013
Author(s)
Liu, G., K. Kojima, K. Yoshimura, T. Okai, A. Suzuki, T. Oki, F. Siringan, M. Yoneda, and H. Kawahata
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Journal Title
Journal of Geophysical Research: Biogeosciences
Volume: 118(2)
Issue: 2
Pages: 853-859
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Probabilistic estimates of future changes in California temperature and precipitation using statistical and dynamical downscaling2012
Author(s)
Pierce, D., T. Das, D. Cayan, E. Maurer, N. Miller, Y. Bao, M. Kanamitsu, K. Yoshimura, M. Snyder, L. Sloan, G. Franco, and M. Tyree
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Journal Title
Climate Dynamics
Volume: 40
Issue: 3-4
Pages: 839-856
DOI
Related Report
Peer Reviewed
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[Journal Article] Ground-based remote sensing of tropospheric water vapour isotopologues within the project MUSICA2012
Author(s)
Schneider, M., Barthlott, S., Hase, F., González, Y., Yoshimura, K., et al.
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Journal Title
Atmos. Meas. Tech.
Volume: 5
Issue: 12
Pages: 3007-3027
DOI
Related Report
Peer Reviewed
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[Journal Article] Effects of Large-scale Moisture Transport and Mesoscale Processes on Precipitation Isotope Ratios Observed at Sumatera, Indonesia2011
Author(s)
Fudeyasu, H., K.Ichiyanagi, K.Yoshimura, S.Mori, N.Sakurai, J.-I.Hamada, M.D.Yamanaka, J.Matsumoto, F.Syamsudin
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Journal Title
Journal of the Meteorological Society of Japan. Ser. II
Volume: 89A
Pages: 49-59
DOI
NAID
ISSN
0026-1165, 2186-9057
Related Report
Peer Reviewed
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