热带气象学报2013，Vol.29Issue(1)：28-36,9.DOI:10.3969/j.issn.1004-4965.2013.01.004
基于广义平衡反馈方法的2009/2010年中国冬季气温异常型的诊断
A DIAGNOSTIC ANALYSIS OF AIR TEMPERATURE ANOMALY MODE OVER CHINA IN 2009/2010 WINTER BASED ON GENERALIZED EQUILIBRIUM FEEDBACK ASSESSMENT(GEFA) METHOD
摘要
Abstract
By using the observed monthly mean data over 160 stations of China and NCAR/NCEP reanalysis data, the generalized equilibrium feedback assessment(GEFA) method, combined with the methods of EOF analysis, correlation and composite analysis, is used to explore the influence of different SST modes on the cold-northeast/warm-southwest pattern(CNE-WSN). The results show that the 2009/2010 winter air temperature oscillation mode between northern and southern parts of China is closely related to the corresponding sea surface temperature anomalies(SSTA) and its associated atmospheric circulation anomalies. The above-mentioned air temperature mode, exhibiting a warming in Northeast China and a cooling in Southwest China, is significantly forced by the El Nino mode and the North Atlantic SSTA mode, which have three poles. Under the influence of SSTA modes, the surface northerly flow transported cold air to north and northeast China, resulting in low temperatures in the region. Meanwhile, the mid-latitude westerlies are intensified and the polar cold air are entrenched in high latitudes and cannot affect the Southwest, resulting in the warming of the Southwest.关键词
广义平衡反馈方法/海温异常/大气环流Key words
generalized equilibrium feedback assessment/ sea surface temperature anomalies/ atmospheric circulation分类
天文与地球科学引用本文复制引用
江志红,吴燕珠,刘征宇,温娜..基于广义平衡反馈方法的2009/2010年中国冬季气温异常型的诊断[J].热带气象学报,2013,29(1):28-36,9.基金项目
公益性行业(气象)科研专项(GYHY200906016) （气象）
国家重点基础研究发展计划项目(2010CB950401)共同资助 （2010CB950401）
