Interdecadal Variations of Precipitation and Temperature in China Around the Abrupt Change of Atmospheric Circulation in 1976

作     者：李春晖 万齐林 林爱兰 谷德军 郑彬 

作者机构：Institute of Tropical and Marine Meteorology/The Key Laboratory for Tropical MonsoonCMA 

出 版 物：《Acta meteorologica Sinica》 (气象学报)

年 卷 期：2009年第23卷第3期

页      面：315-326页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：Supported jointly by the National Basic Research Program of China under Grant No. 2006CB403600 Science and Technology Project Item of Guangdong Province under Grant No. 2005B32601007 National Natural Science Foundation of Chinaunder Grant Nos. 90211010, 40775058, 40675054, 40675055, and 40505019 China Meteorological Administration under Contract CMATG2006L03 Natural Science Foundation of Guangdong under Grant No. 06020745 

主　　题：temperature and precipitation in China seasons Hadley cell, upper-level westerly jet stream water vapor transport 

摘      要：The interdecadal characteristics of rainfall and temperature in China before and after the abrupt change of the general circulation in 1976 are analyzed using the global 2.5°×2.5° monthly mean reanalysis data from the National Centers for Environmental Prediction of US and the precipitation and temperature data at the 743 stations of China from the National Climate Center of China. The results show that after 1976, springtime precipitation and temperature were anomalously enhanced and reduced respectively in South China, while the reverse was true in the western Yangtze River basin. In summer, precipitation was anomalously less in South China, more in the Yangtze River basin, less again in North China and more again in Northeast China, showing a distribution pattern alternating with negative and positive anomalies （＂ , ＋, -, ＋＂）. Meanwhile, temperature shows a distribution of warming in South China, cooling in the Yangtze and Huaihe River basins, and warming again in northern China. In autumn, precipitation tended to decrease and temperature tended to increase in in South China and warming was most parts of the country. In winter, the trend across all parts of China. precipitation increased moderately The interdecadal decline of mean temperature in spring and summer in China was mainly due to the daily maximum temperature variation, while the interdecadal increase was mainly the result of the minimum temperature change. The overall warming in autumn （winter） was mostly influenced by the minimum （maximum） temperature variation. These changes were closely related to the north-south shifts of the ascending and descending branches of the Hadley cell, the strengthening and north-south progression of the westerly jet stream, and the atmospheric stratification and water vapor transport conditions.