文献类型：期刊文献

英文题名：Contrasting Impacts of Three Extreme El Ninos on Double ITCZs over the Eastern Pacific Ocean

作者：Chen, Yinlan[1,2];Yan, Li[1,2];Li, Gen[3];Xu, Jianjun[1,2];Long, Jingchao[1,2];Zheng, Shaojun[1,2]

机构：[1]Guangdong Ocean Univ, South China Sea Inst Marine & Meteorol, Coll Ocean & Meteorol, Zhanjiang 524088, Peoples R China;[2]Marine Resources Big Data Ctr South China Sea, Southern Marine Sci & Engn Guangdong Lab, Zhanjiang 524000, Peoples R China;[3]Hohai Univ, Coll Oceanog, Key Lab Marine Hazards Forecasting, Minist Nat Resources, Nanjing 210098, Peoples R China

年份：2021

卷号：12

期号：4

外文期刊名：ATMOSPHERE

收录：SCI-EXPANDED(收录号：WOS:000642715100001)、、WOS

基金：This research was jointly funded by the National Key R&D Program of China (Grant 2018YFC1505902), the Strategic Priority Research Program of Chinese Academy of Sciences (XDA20060503) and program for scientific research start-up funds of Guangdong Ocean University (R19061 & R18023).

语种：英文

外文关键词：extreme El Niñ o events; double ITCZs; meridional structure of SSTs; eastern Pacific Ocean

外文摘要：In the recent four decades, there were three record-breaking El Nino events: 1982/1983, 1997/1998, and 2015/2016 events. A double intertropical convergence zone (ITCZ) pattern distinctively emerges over the eastern Pacific Ocean during boreal spring. Based on reanalysis (ERA-Interim) during 1979-2018, this study examines how these three extreme El Ninos modulate such double ITCZs. The 1982/1983 and 1997/1998 El Ninos moved both northern and southern ITCZs equatorward to form an individual and broad equatorial ITCZ. In contrast, the regulation of 2015/2016 El Nino was unique with a strengthened southern ITCZ to form a symmetric double-ITCZ. The above differences can be attributed to the different meridional structures of sea surface temperatures (SSTs). For the 1982/1983 and 1997/1998 El Ninos, there was a meridionally symmetric structure of SST warming with a maximum at the equator. While for 2015/2016 El Nino, there was a meridionally symmetric structure of SST warming with a minimum at the equator.