气象2016，Vol.42Issue(4)：507-513,7.DOI:10.7519/j.issn.1000-0526.2016.04.015
2015年秋季我国气候异常及暖湿成因分析
Possible Causes for the Warmer and Wetter Autumn in 2015 in China
摘要
Abstract
During the autumn of 2015,the averaged surface air temperature in China was above normal. The mean precipitation in China was much more than normal,ranked as the 3rd since 1951.Thus,the au-tumn 2015 in China generally featured“warm and wet”.However,the temporal evolution of the precipita-tion of South and North China exhibited different characteristics.Driven by the different water vapor con-ditions,the South China was characterized by persistent precipitation,while North China featured several heavy rainfall events.By diagnosing the circulation anomaly,it was found that,the persistent anomalous rainfall over South China was associated with the forcing of the super strong El Ni˜no and warmer tropical Indian Ocean.The continued anomalous warming over the tropical eastern Pacific and Indian Ocean togeth-er strengthened the western Pacific subtropical high and pushed it westward.The anomalous southerlies a-long the western side of western Pacific subtropical high guided more water vapor from the South China Sea and the western Pacific to South China,causing the wetter autumn there.Meanwhile,the amplitudes of ridges and troughs in mid-latitude regions were larger than normal,causing several strong cold air processes over North China,along with the water vapor transport from the East China Sea and South Chi-na Sea,and further leading to the anomalous precipitation in North China.关键词
暖湿/西太平洋副热带高压/超强厄尔尼诺Key words
warm and wet/the western Pacific subtropical high/supper powerful El Ni˜no分类
天文与地球科学引用本文复制引用
聂羽,孙冷,李清泉,马丽娟..2015年秋季我国气候异常及暖湿成因分析[J].气象,2016,42(4):507-513,7.基金项目
中国气象局气候研究开放实验室开放课题青年基金2015年度资助项目和中国气象局气象关键技术集成与应用项目（CMAGJ2015Z11）共同资助 （）
