气象Issue(4)：489-496,8.DOI:10.7519/j.issn.1000-0526.2015.04.012
2014年海洋和大气环流异常及对中国气候的影响
Anomalies of Ocean and Atmospheric Circulation in 2014 and Their Impacts on Climate over China
摘要
Abstract
Based on the real-time,historical observation data and NCEP/NCAR reanalysis data,anomalies of ocean and atmospheric circulation are analyzed and their impacts on climatic anomalies in 2014 over Chi-na are discussed.The results show that the intensity of East Asian winter monsoon and the Siberian high were weaker than normal during the 2013/2014 winter,with the center of polar vortex located in the West-ern Hemisphere,leading to the higher temperature than normal over China.While the East Asian winter monsoon exhibited intraseasonal variations,the surface air temperature over China had two-stage varia-tions last winter,warmer in the early winter and colder in late winter.It is found that a new El Ni~no event formed in the eastern and central equatorial Pacific in 2014,and significant positive phase persisted in the index of Basin-Wide SSTA variation in the tropical Indian Ocean (IOBW)after March of 2014.As a re-sponse of circulations to above warm ocean conditions,the West Pacific subtropical high was stronger and extended further southward to its normal situation during summer and autumn,leading to the “more in South and less in North”feature for total precipitation over eastern China during the rainy season.In 2014,onset of the South China Sea summer monsoon was extremely later than normal,and its intensity was weaker than normal.The East Asian summer monsoon was weaker than normal,favorable for the main rain belt over the eastern China to hover southward and more precipitation in Meiyu season was seen over the Jiangnan and the middle and lower reaches of the Yangtze River while less precipitation was in most of the northern China during the summer 2014.关键词
厄尔尼诺/大气环流/东亚季风/气候异常Key words
El Ni~no/atmospheric circulation/East Asia monsoon/climatic anomaly分类
天文与地球科学引用本文复制引用
王朋岭,周兵,柳艳菊,李清泉,王东阡..2014年海洋和大气环流异常及对中国气候的影响[J].气象,2015,(4):489-496,8.基金项目
公益性行业（气象）科研专项（GYHY20140616和GYHY201306026）共同资助 （）
