气象学报Issue(6)：1052-1065,14.DOI:10.11676/qxxb2015.078
中国降水集中期之特征
haracteristics of the precipitation concentration period in China
摘要
Abstract
Using the diurnal precipitation data sets of 2474 stations from 1961 to 2013 and the relevant NCEP/NCAR reanalises data,the precipitation concentration period (PCP)is firstly defined as the shortest time,during which the precipitation ac-counts for 45% of the total amounts from May to August,with 40% from May to September for the Hetao region and the cen-tral Sichuan basin.The precipitation concentration period’s climatic state and variation characteristics were discussed.It is found that:(1)PCP occurs earliest to the north of South China but latest in the Hetao region and the Sichuan Basin.(2)PCP ends earliest in South China and a larger part the area south of the Yangtze River,but latest in the Hetao region,the Sichuan basin and southern Tibet.(3)PCP can last 7 to 40 d,the shortest with 7 to 10 d is in desert of West China and the longest with 30 to 40 d in Southwest China.(4)PCP of China occurs with the Somali jet bursting out,and expands with the western Pacific subtropical high developing.And,(5)every regional precipitation during PCP has distinct regional characteristics,and it is prominent that the precipitation is lesser in 1980s,but more in 1990s in the areas north of South China and south of the Yan-gtze River.关键词
降水集中期/气候特征/环流/年代际变化Key words
Precipitation concentration period/Climatic characteristics/Circulation/Decadal variation分类
天文与地球科学引用本文复制引用
汪卫平,张祖强,许遐祯,项瑛..中国降水集中期之特征[J].气象学报,2015,(6):1052-1065,14.基金项目
资助课题国家重点基础研究发展计划项目（2013CB430206）、公益性行业（气象）科研专项（GYHY200806004）、江苏省气象局科研基金项目（KZ201505）。 （）
