热带气象学报2018，Vol.34Issue(3)：401-409,9.DOI:10.16032/j.issn.1004-4965.2018.03.014
影响东亚夏季风降水异常的前期海温信号
THE RESEARCH OF ANTECEDENT SST SIGNAL TO EAST ASIA SUMMER MONSOON
摘要
Abstract
The NCEP/NCAR reanalysis data, Hadley Center sea surface temperature analysis data and precipitation records over East Asia monsoon region in China are used to examine the relationship between the sea surface temperature (SST) in the previous winter and the East Asia summer monsoon. The results show that the abnormal variations of SST in south India Ocean and eastern North Pacific are key areas infecting the East Asia summer monsoon. The SST in key areas is in highly positive correlation with precipitation over the middle reach of the Yangtze River, and significantly negative correlation with the summer monsoon index. Based on the research, an Indo-Pacific SST index was defined. In the years of strong SST index, the South Asia high, Somali cross-equatorial flow and the western Pacific subtropical high were all enhanced, which led to the advancement of the East Asia summer monsoon. Under the situation, the precipitation increased obviously in most of the East Asia monsoon region in China. The atmospheric circulation and the precipitation had opposite tendency in the years of weak SST index years.关键词
气候学/统计分析/印太海温指数/东亚夏季风/降水异常分布型/高低空环流配置Key words
climatology/statistics analysis/Indo-Pacific sea surface temperature index/East Asia summer monsoon/anomaly rainfall distribution/high and low circulation configuration分类
天文与地球科学引用本文复制引用
胡娟,晏红明,周建琴..影响东亚夏季风降水异常的前期海温信号[J].热带气象学报,2018,34(3):401-409,9.基金项目
中国气象局公益性行业专项(GYHY201406018)资助 （GYHY201406018）
