文献类型：期刊文献

中文题名：Weakening of the biennial relationship between Central American and equatorial South American rainfall in recent decades

英文题名：Weakening of the biennial relationship between Central American and equatorial South American rainfall in recent decades

作者：Wang, Lei[1];Wu, Min-Min[1]

机构：[1]Guangdong Ocean Univ, Guangdong Prov Key Lab Coastal Ocean Variat & Dis, Coll Ocean & Meteorol, Zhanjiang, Peoples R China

年份：2017

卷号：10

期号：6

起止页码：427

中文期刊名：Atmospheric and Oceanic Science Letters

外文期刊名：ATMOSPHERIC AND OCEANIC SCIENCE LETTERS

收录：ESCI(收录号：WOS:000423811600004)、Scopus(收录号：2-s2.0-85075728752)、WOS、CSCD2017_2018、CSCD

基金：This work was funded by the National Natural Science Foundation of China [grant number 41776031], the Guangdong Natural Science Foundation [grant number 2015A030313796], the National Program on Global Change and Air-Sea Interaction [grant number GASI-IPOVAI-04], the Strategic Priority Research Program of the Chinese Academy of Sciences [grant number XDA11010104], the program for scientific research start-up funds of Guangdong Ocean University, and the Foundation for Returned Scholars of the Ministry of Education of China.

语种：英文

中文关键词：Biennial variability; tropicalrainfall; ENSO; tropicalNorth Atlantic; twenty-firstcentury climate shift; CentraAmerica; equatorial SouthAmerica

外文关键词：Biennial variability; tropical rainfall; ENSO; tropical North Atlantic; twenty-first century climate shift; Central America; equatorial South America

中文摘要：There is a rainfall variability biennial relationship between Central America （CA） and equatorial South America （ESA） over the tropical western hemisphere, which is known to have arisen due to the combined effects of ENSO and tropical North Atlantic （TNA） SST. Here, the authors report that this biennial rainfall relationship between CA and ESA has weakened remarkably since 2000, with weakening in both in-phase and out-of-phase rainfall transitions. The observed decadal changes in the biennial relationship between CA and ESA rainfall can be attributed to changes in the effects of ENSO and TNA SST since 2000, which may be associated with more frequent occurrences of the central Pacific or＇Modoki＇ type El Ni^o. The weakening of the association with ENSO for CA rainfall since 2000 might have given rise to the weakening of the in-phase rain transition from CA rainfall to the following ESA rainfall. The weakened linkage between boreal-winter ESA rainfall and the subsequent boreal-summer TNA SST since 2000 may have resulted in the weakening of the out- of-phase rainfall transition from boreal-winter ESA rainfall to the subsequent boreal-summer CA rainfall.

外文摘要：There is a rainfall variability biennial relationship between Central America (CA) and equatorial South America (ESA) over the tropical western hemisphere, which is known to have arisen due to the combined effects of ENSO and tropical North Atlantic (TNA) SST. Here, the authors report that this biennial rainfall relationship between CA and ESA has weakened remarkably since 2000, with weakening in both in-phase and out-of-phase rainfall transitions. The observed decadal changes in the biennial relationship between CA and ESA rainfall can be attributed to changes in the effects of ENSO and TNA SST since 2000, which may be associated with more frequent occurrences of the central Pacific or 'Modoki' type El Nino. The weakening of the association with ENSO for CA rainfall since 2000 might have given rise to the weakening of the in-phase rain transition from CA rainfall to the following ESA rainfall. The weakened linkage between boreal-winter ESA rainfall and the subsequent boreal-summer TNA SST since 2000 may have resulted in the weakening of the out-of-phase rainfall transition from boreal-winter ESA rainfall to the subsequent boreal-summer CA rainfall.