物理学报Issue(20)：1-12,12.DOI:10.7498/aps.63.209204
20世纪90年代末东亚夏季降水年代际变化及其成因初探
Interdecadal variation of precipitation pattern and preliminary studies during the summer of late-1990s in East Asia
摘要
Abstract
Based on the analyses of monthly precipitation, National Centers Environmental Prediction/University Corporation for Atmospheric Research reanalysis dataset, and 2◦× 2◦ sea surface temperature (sst) data of extended reconstructed sea surface temperature during 1983-2011, we discuss the interdecadal variations of precipition around late-1990s in East Asia, the contributions of the atmospheric internal dynamic processes, and the extra-forcing factors such as sst that presents interdecal characteristics corresponding to the results obtained by using regress analysis. The results show that the interdecadal variations of the summer rainfall over Northern East Asia around late-1990s were more obvious than over Southern East Asia, and the summer rainfall over Southern East Asia experienced a notable interdecadal change around early-1990s and early-2000s. The summer geopotential height at 500 hPa, the summer wind at 850 hPa, the summer U-wind at 200 hPa, the water vapor transportation field, the index of EAP and EASM all have the notable characteristics of the interdecadal variations, which further validate the interdecadal change of precipition of late-1990s from the angle of the atmospheric internal dynamic process. At the same time the sea surface temperature interdecadal anomalies of North Pacific and West Pacific may also be one of the important reasons for causing the interdecadal change over East Asia of the late-1990s.关键词
降水型/年代际变化/环流/外强迫Key words
precipitation pattern/interdecadal variation/circulation/extra-forcing factor引用本文复制引用
胡泊,乔少博,封国林..20世纪90年代末东亚夏季降水年代际变化及其成因初探[J].物理学报,2014,(20):1-12,12.基金项目
国家重点基础研究发展计划(批准号:2012CB955903)、国家自然科学基金(批准号:41205040,41175067,41375078)和公益性行业专项(批准号：GYHY201306021)资助的课题.* Project supported by the National Basic Research Program of China (Grant No.2012CB955203), the National Natural Science Foundation of China (Grant Nos.41205040,41175067,41375078), and the Special Scientific Research Project for Public Interest, China (Grant No. GYHY201306021) （批准号:2012CB955903）
