文献类型：期刊文献

英文题名：Recent Weakening in Interannual Variability of Mean Tropical Cyclogenesis Latitude over the Western North Pacific during Boreal Summer

作者：Wu, Minmin[1];Wang, Lei[1,2,3];Chen, Baiyang[1]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Lab Coastal Ocean Variat & Disaster Predict, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Key Lab Climate Resources & Environm Continental, Dept Educ Guangdong Prov, Zhanjiang 524088, Peoples R China;[3]Marine Resources Big Data Ctr South China Sea, Southern Marine Sci & Engn Guangdong Lab Zhanjian, Zhanjiang 524025, Peoples R China

年份：2020

卷号：34

期号：6

起止页码：1183

外文期刊名：JOURNAL OF METEOROLOGICAL RESEARCH

收录：SCI-EXPANDED(收录号：WOS:000606835100004)、、Scopus(收录号：2-s2.0-85098874999)、WOS

基金：Supported by the National Natural Science Foundation of China (41776031), National Key Research and Development Program of China (2018YFC1506903), Guangdong Natural Science Foundation (2015A030313796), Program for Scientific Research Start-Up Funds of Guangdong Ocean University, and Foundation for Returned Scholars of the Ministry of Education of China.

语种：英文

外文关键词：tropical cyclone; cyclogenesis latitude; decadal change; shifting El Nino-Southern Oscillation (ENSO); western North Pacific (WNP); tropical Atlantic sea surface temperature (SST)

外文摘要：The intensity of the interannual variability (IIV) of the mean tropical cyclone (TC) genesis latitude over the western North Pacific (WNP) has been weakening significantly since the late 1990s. It is found that the IIV of the mean TC genesis latitude depends largely on the strength of the out-of-phase relationship between TC genesis numbers in the north (north of 15 degrees N) and south (south of 15 degrees N) of the WNP. A weaker (stronger) north-south TC see-saw has led to a smaller (larger) IIV of the mean TC genesis latitude after (before) the late 1990s. Different configurations of sea surface temperature (SST) anomalies are found to be responsible for the decadal changes in the north-south TC see-saw and dipole structure. Before the late 1990s, the joint effect of SST anomalies over the tropical Pacific and tropical North Indian Ocean dominated, rendering the obvious north-south TC see-saw and larger IIV of the mean TC genesis latitude. After the late 1990s, however, the dominant SST anomalies associated with TC genesis shift to the tropical central Pacific (CP) and tropical North Atlantic Ocean, which have weakened the north-south TC seesaw and reduced the IIV of the mean TC genesis latitude. These observed decadal changes in the configuration of SST anomalies are considered to be closely associated with the shift of the El Nino-Southern Oscillation (ENSO) from eastern Pacific (EP) type to the CP type during the recent decades. The results suggest that the increased influences from the tropical Atlantic Ocean have become more important to the variations of TC activity in the WNP during the recent decades. These results may have important implications for assessing the latitudinal distributions of TC-induced hazards.