大气科学学报2009，Vol.32Issue(5)：677-685,9.
近57a夏季西太平洋副高面积的年代际振荡及其与中国降水的联系
Interdecadal Variations of West Pacific Subtropical High Area and Changes in Summer Precipitation over China in Boreal Summer during the Last 57 Years
摘要
Abstract
Using the NCEP/NCAR reanalysis from 1951 through 2007,the precipitation data at 160 sta-tions and the circulation index in the same period released by the National Climate Center of China,wehave investigated in the present paper the abrupt changes in area of summertime mean West Pacific Subtropical High(WPSH)and interdacadal variations in summer precipitation over China during the last 57 years.The results suggest that under the background of the global warming,the area of WPSH also showed an apparent increasing trend especially in the mid-1960s and the late 1990s(i.e.an inter-decadal change character of quasi-20 years).In the three quasi-20 year periods of the 1950s-1960s,the 1920s-1980s and the 1990s-2007,summer precipitation and atmospheric circulation over China were obviously changed:along with successive increase in the area of WPSH,the East Asian monsoon became anomalously weak;and the precipitation pattern over China changed from positive anomaties in Southern China-negative anomaties in Southern China in the 1950s-1960s to negative anomaties in Northern China-positive anomaties in Southern China in the 1990s-2007;and the area where the pre-cipitation linearly increased also showed a northward migration trend.关键词
西太平洋副热带高压/气候突变/东亚夏季风/降水/年代际变化Key words
western Pacific subtropical high/abrupt climate change/East Asian summer monsoon/pre-cipitation/interdecadal variations分类
天文与地球科学引用本文复制引用
钱代丽,管兆勇,王黎娟..近57a夏季西太平洋副高面积的年代际振荡及其与中国降水的联系[J].大气科学学报,2009,32(5):677-685,9.基金项目
国家科技支撑计划项目(2007BAC29802) （2007BAC29802）
国家自然科学基金资助项目(40475028) （40475028）
