Mechanisms and predictability of the dominant atmospheric variability : An approach using a hierarchical modeling
| Project/Area Number |
20684020
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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 |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
WATANABE Masahiro The University of Tokyo, 大気海洋研究所, 准教授 (70344497)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥24,310,000 (Direct Cost: ¥18,700,000、Indirect Cost: ¥5,610,000)
Fiscal Year 2010: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2009: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Fiscal Year 2008: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
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| Keywords | 気象 / 大気循環変動 / EnKF / 非線形力学コア / 気象予報 / 予測可能性 / LBM / AGCM / 階層的モデル |
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| Research Abstract |
We developed a group of atmospheric models having different levels of complexity. They are used cooperatively to examine the mechanisms of dominant circulation variability and clarified, for example, forcing processes for the summertime teleconnection patterns. We also developed an experimental forecast system based on the ensemble Kalman filter. By extending the system such that the model's parameters are assimilated and perturbed, we showed an improvement in the 1-mo forecast skill, which is due to the reduction of the model error.
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Report
(4 results)
Research Products
(48 results)
