大气科学2012，Vol.36Issue(3)：564-578,15.DOI:10.3878/j.issn.1006-9895.2011.11106
中国东部地区前冬季节来临早晚与夏季降水的关系探究
The Relationship between the Onset Date of Preceding Winter and Following Summer Rainfall in Eastern China
摘要
Abstract
By using NCEP/NCAR reanalysis datasets. The starting dates of preceding winters in eastern China have been divided from 1961 to 2010, the authors investigate the relationship between the onset date of preceding winter and the following summer precipitation in eastern China. Results indicate that there are two positive correlation bands and two negative correlation bands. The four bands are corresponding with the main rainbelts in eastern China in summer. The positive ones are located in South China, Southwest China, the region north of the Yellow River with latitudes between 39°N and 42°N, and central and southern Northeast China. The negative ones are in Huang-huai, Jianghuai. The middle and lower reaches of the Yangtze River, and most regions north of latitude 42°N. The statistical results show that the frequency of rainfall pattern Ⅱ is larger than that of the climate state, those for both rainfall patterns Ⅰ and Ⅲ are less than that of the climate state when earlier preceding winters come. While for later winters, that for pattern I is larger than that of the climate state, those for both rainfall patterns Ⅱ and Ⅲ are much smaller than that of the climate state. The rainbelt outcomes from the statistics and composition analysis in the typical years are consistent with each other. The statistical results show that the later preceding winters are prime when it is pattern Ⅰ, earlier winters for pattern Ⅱ, and there is not significant relationship between the winter starting dates and pattern Ⅲ In a word, the patterns of precipitation are closely related to the starting dates of the seasons. The different starting dates of winters are corresponding to different air-sea interactions which result in different patterns of precipitation.关键词
季节划分/夏季雨型/空间分布/大气环流/汛期降水Key words
season division/summer rainfall patterns/spatial distribution/atmospheric circulation/summer rainfall分类
天文与地球科学引用本文复制引用
张世轩,支蓉,封国林,沈柏竹..中国东部地区前冬季节来临早晚与夏季降水的关系探究[J].大气科学,2012,36(3):564-578,15.基金项目
国家自然科学基金资助项目40875040、41105055,全球变化重大研究计划2012CB955902,公益性行业(气象)科研专项GY-HY201106016 （气象）
