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《Journal of Tropical Meteorology》 2005-03
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THE INFLUENCE OF ABNORMITY OF TROPICAL CIRCULATION SYSTEMSON SUSTAINED RAINSTORMS IN HUAIHE BASIN IN 2003

HE Min, GONG Zhen-song, XU Li (National Climate Center/Open Laboratory for Climate Research, CMA, Beijing 100081, China)  
In this article we analyze the influences of the abnormity of tropical circulation systems on sustained rainstorm in the Huaihe River basin in June and July of 2003 by using the stream filed in the high and low levels and the index of tropical monsoon. The analysis shows that: the rainstorm has close relationship with northward advancing airflow from the Southern Hemisphere; it was the abnormal strong divergent and convergent air current in the upper and lower levels that offered available conditions to the abnormal rainfall between the Yellow River and the Yangtze River; the outbreak date of South China Sea Summer Monsoon in 2003 was later than normal and the tropical monsoon was weaker than normal, its monthly change was like 1991, and this is the circulation factor for the rainfall to sustain in the Huaihe River basin.
【Fund】: 国家气象中心“2003年夏季淮河流域降水异常的气候成因研究”课题资助
【CateGory Index】: P461.2
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