文献类型：期刊文献

英文题名：Weakening seasonality of Indo-Pacific warm pool size in a warming world since 1950

作者：Gan, Qiuying[1,2];Leung, Jeremy Cheuk-Hin[2];Wang, Lei[1];Zhang, Banglin[2,3,4]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Lab Coastal Ocean Variat & Disaster Predict, Zhanjiang, Peoples R China;[2]CMA, Guangzhou Inst Trop & Marine Meteorol, Guangdong Prov Key Lab Reg Numer Weather Predict, Guangzhou, Peoples R China;[3]Lanzhou Univ, Coll Atmospher Sci, Lanzhou, Peoples R China;[4]Southern Marine Sci & Engn Guangdong Lab, Zhuhai, Peoples R China

年份：2023

卷号：18

期号：1

外文期刊名：ENVIRONMENTAL RESEARCH LETTERS

收录：SCI-EXPANDED(收录号：WOS:000907668100001)、、EI(收录号：20230213381396)、Scopus(收录号：2-s2.0-85146077941)、WOS

基金：AcknowledgmentsThis work is supported by the Guangdong Province Introduction of Innovative R&D Team Project China (2019ZT08G669), the Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), the Guangdong Basic and Applied Basic Research Foundation (2020A1515110275) and the National Natural Science Foundation of China (41776031).

语种：英文

外文关键词：Indo-Pacific warm pool; seasonality; global warming; capacity for change; expansion; climatological SST pattern

外文摘要：Seasonal variation of the Indo-Pacific warm pool (IPWP) plays an important role in oceanographic and climatological processes. While expansion of the IPWP under greenhouse warming has been widely discussed, the response of IPWP seasonality to climate change has received limited attention. In this study, we found an obvious seasonal diversity in expansion of the IPWP from 1950 to 2020, with a maximum (minimum) expansion trend of 0.28 x 7 km(2)/decade in winter (0.17 x 7 km(2)/decade in spring), which consequently reduces the seasonality amplitude of the variation in IPWP size. This is primarily attributed to the seasonal difference in the climatological spatial sea surface temperature (SST) pattern over the Indo-Pacific Ocean, especially that over the tropical Indian Ocean, which determines the capacity for IPWP expansion. Heat budget analyses show that the seasonal shortwave radiation and latent heat fluxes are the major factors controlling the capacity for change in IPWP size across seasons. The presented analyses emphasize the significant weakening of the seasonality of IPWP size, which may have great impacts on the ecological environment of the IPWP and the tropical climate system, and remind us that the intrinsic properties of the climate background of Indo-Pacific SST hold important clues about IPWP expansion under climate change.