| THERMAL INFLUENCES OF LAND-SEA CONTRAST AND TOPOGRAPHY ON SUMMER MONSOON IN 1998 |
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| 作者姓名： | 邵慧 |
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| 作者单位： | Department of Atmospheric Sciences, Nanjing University |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，Analysis and Mechanism Study of Regional Climate Changes in China |
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| 摘 要： | In this work, the SCSMEX data are used to diagnose and compare the local land-sea thermal
conditions, with the focus of discussion on possible influences of thermal forcing of the western Pacific and the
Tibetan Plateau on the onset and development of summer monsoon in 1998. Results show a close relationship
between the distribution of the heat sources and the land-sea contrast. Due to the blocking effect of terrain, main
maximum zones of the heat sources in areas with more evident north-south land-sea contrast are more obviously
southward located than those exclusively with oceans. The surface heating is characterized with apparent
seasonal variation and difference between land and sea. The relationship between the western Pacific and the
onset of summer monsoon is reflected in the variations of the sea surface temperature (SST) and the latent heat.
The influence mechanism of the Tibetan Plateau during the summer monsoon is different: it is dominated by
sensible heating during the South China Sea monsoon and by condensed latent heating during the Indian
monsoon.
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| 关 键 词： | summer monsoon land-sea contrast topography thermal influences |
THERMAL INFLUENCES OF LAND-SEA CONTRAST AND TOPOGRAPHY ON SUMMER MONSOON IN 1998 |
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| SHAO Hui.THERMAL INFLUENCES OF LAND-SEA CONTRAST AND TOPOGRAPHY ON SUMMER MONSOON IN 1998[J].Journal of Tropical Meteorology,2001,7(2):131-143. |
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| Authors: | SHAO Hui |
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| Institution: | Department of Atmospheric Sciences, Nanjing University, |
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| Abstract: | In this work, the SCSMEX data are used to diagnose and compare the local land-sea thermal conditions, with the focus of discussion on possible influences of thermal forcing of the western Pacific and the Tibetan Plateau on the onset and development of summer monsoon in 1998. Results show a close relationship between the distribution of the heat sources and the land-sea contrast. Due to the blocking effect of terrain, main maximum zones of the heat sources in areas with more evident north-south land-sea contrast are more obviously southward located than those exclusively with oceans. The surface heating is characterized with apparent seasonal variation and difference between land and sea. The relationship between the western Pacific and the onset of summer monsoon is reflected in the variations of the sea surface temperature (SST) and the latent heat. The influence mechanism of the Tibetan Plateau during the summer monsoon is different: it is dominated by sensible heating during the South China Sea monsoon and by condensed latent heating during the Indian monsoon. |
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| Keywords: | summer monsoon land-sea contrast topography thermal influences |
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