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篇目详细内容 |
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【篇名】 |
Changes in summer monsoon precipitation over Hunan Province during 1952─2007: response to the west Pacific sea surface temperature and global warming |
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【刊名】 |
Frontiers of Earth Science in China |
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【刊名缩写】 |
Front. Earth Sci. China |
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【ISSN】 |
1673-7385 |
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【EISSN】 |
1673-7490 |
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【DOI】 |
10.1007/s11707-009-0063-z |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2009 |
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【卷期】 |
3
卷4期 |
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【页码】 |
411-418
页,共
8
页 |
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【作者】 |
Jingjing TANG;
Hao XU;
Zhanghua WANG;
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【关键词】 |
East Asian summer monsoon precipitation; seasonal redistribution; SST; west Pacific Subtropical High |
【摘要】 |
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Using a historical database (1952─2007) of sea surface temperature (SST) from a subtropical high-controlled area (110°E─140°E, 15°N─35°N) of the west Pacific Ocean and the precipitation over Hunan Province of southeast China, we analyzed time series variations of precipitation in relation to the East Asian summer monsoon and a global warming setting. The results show that there has been a significant increase in SST of the subtropical high-controlled area in the recent 50 years. Although the increase in annual summer monsoon precipitation during the same period has been subtle over Hunan province, seasonal rainfall distribution has obviously changed, represented by a reduction in May, but a significant increase through June to August, especially in July. We suggest that the mechanism of seasonal redistribution of monsoon precipitation is primarily due to the increasing SST that delays the intrusion of the west Pacific Subtropical High, therefore leading to a postponing of migration of the East Asian summer monsoon rainfall belt inland and northward. |
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