文献类型：期刊文献

英文题名：Intercomparing the Response of Tropospheric and Stratospheric Temperature to Two Types of El Nino Onset

作者：Chang, Shujie[1];Shao, Min[1];Shi, Chunhua[2];Xu, Hua[1]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang, Guangdong, Peoples R China;[2]Nanjing Univ Informat Sci & Technol, Earth Syst Modeling Ctr, Key Lab Meteorol Disaster, Nanjing, Jiangsu, Peoples R China

年份：2017

卷号：2017

外文期刊名：ADVANCES IN METEOROLOGY

收录：SCI-EXPANDED(收录号：WOS:000410343300001)、、WOS

基金：This work was supported by the Program of the National Natural Science Foundation of China (41675039, 41375047, and 91537213) and Guangdong Ocean University Research Support Funding for Air-Sea Interaction and Data Assimilation. The authors appreciate greatly Dr. Jianjun Xu for his good suggestions in the processing of the manuscript revision.

语种：英文

外文摘要：Based on Remote Sensing Systems-retrieved temperature data in the period of January 1979 to February 2016, the response of stratospheric and tropospheric temperature in boreal winter to two previously defined types of El Nino no [ spring (SP) and summer (SU)] is investigated. The results show that, the response of temperature under SP onset involves a significant positive anomaly, with a symmetric distribution about the equator over the Indian Ocean region in the lower troposphere (850 hPa) and a negative anomaly in the lower stratosphere (50 hPa). Meanwhile, in the area 30 degrees N and 30 degrees S of the equator, most parts of the lower stratosphere feature a positive anomaly. This indicates that SP El Nino events are more conducive than SU events to warming the lower stratosphere. The atmospheric circulation structure over the tropical Indian Ocean is beneficial to the upward transfer of warmair to the upper layer. In contrast, the structure over the tropical Pacific Ocean favors the warming of upper air. On the other hand, the Eliassen-Palm (EP) flux is small and the heat flux is negative during SP-type events. Thus, the EP flux and Brewer-Dobson circulation decrease, making the temperature higher in the upper troposphere-lower stratosphere region at low latitudes.