2015 Fiscal Year Final Research Report
The influence of long-term variability of western north Pacific summer monsoon to the coastal Asian climate
| Project/Area Number |
25282085
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Geography
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| Research Institution | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
KUBOTA Hisayuki 国立研究開発法人海洋研究開発機構, 大気海洋相互作用研究分野, 研究員 (40359211)
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| Co-Investigator(Kenkyū-buntansha) |
ZAIKI Masumi 成蹊大学, 経済学部, 准教授 (50534054)
AKASAKA Ikumi 専修大学, 文学部, 准教授 (40574140)
ENDO Nobuhiko 国立研究開発法人海洋研究開発機構, 地球環境観測研究開発センター, 主任技術研究員 (30282304)
XU Jianqing 国立研究開発法人海洋研究開発機構, 地球環境変動領域, 主任研究員 (50344304)
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| Research Collaborator |
Cayanan Esperanza O. Philippine Atmospheric, Geophysical and Astronomical Services Administration, Weather Services Chief
Lu Mong-Ming Central Weather Bureau, Chief Researcher
Chan Johnny C. L. City University of Hong Kong, Chair Professor of Atmosphere Science
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | モンスーン / 西太平洋 / 長期変動 / アジア |
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| Outline of Final Research Achievements |
Long index of Pacific-Japan pattern from 1897 to 2013 was developed using historical station-based atmospheric pressure data.This index is correlated with a wide array of climate variables including air temperature, precipitation, Yangtze River flow, Japanese rice yield and the occurrence of tropical cyclones over the western north Pacific (WNP). For the 117-year period, this ENSO-PJ relationship varies on interdecadal time scales, with low correlations in the 1920s and from the 1940s to 1970s, and recurrences of significant correlations at the beginning of the 20th century and the 1930s. In accordance with the modulation, the magnitude and regional climate effect of the PJ variability have changed. These results highlight the importance of interdecadal modulations of climate anomalies in the summer WNP and the need of long-term observations to study such modulations.
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| Free Research Field |
熱帯気象学
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