大气和海洋科学快报（英文版）2021，Vol.14Issue(1)：27-32,6.
PDO对西太平洋副热带高压年代际东退的可能贡献
Possible contribution of the PDO to the eastward retreat of the western pacific subtropical high
摘要
Abstract
Previous studies have demonstrated that the western Pacific subtropical high (WPSH) has experienced an eastward retreat since the late 1970s.In this study,the authors propose that this eastward retreat of the WPSH can be partly attributed to atmospheric responses to the positive phase of the Pacific decadal oscillation (PDO),based on idealized SST forcing experiments using the Community Atmosphere Model,version 4.Associated with the positive phase of the PDO,convective heating from the Indian Peninsula to the western Pacific and over the eastern tropical Pacific has increased,which has subsequently forced a Gill-type response to modulate the WPSH.The resulting cyclonic gyre over the Asian continent and the western Pacific in the lower troposphere is favorable for the eastward retreat of the WPSH.Additionally,the resulting anticyclonic gyre in the upper troposphere is favorable for the strengthening and southward expansion of the East Asian westerly jet,which can modulate the jet-related secondary meridional-vertical circulation over the western Pacific and promote the eastward retreat of the WPSH.关键词
西太平洋副热带高压/太平洋年代际振荡/年代际气候变化Key words
Western pacific subtropical high/Decadal climate variation/Pacific decadal oscillation引用本文复制引用
Qi Tong,Yanyan Huang,Mingkeng Duan,Qianfei Zhao..PDO对西太平洋副热带高压年代际东退的可能贡献[J].大气和海洋科学快报（英文版）,2021,14(1):27-32,6.基金项目
This study was funded by the Major Program of the National Natural Science Foundation of China[grant number 41991283],the National Key Research and Development Program of China[grant number 2016YFA0600703],and the Funding of the Jiangsu Innovation & Entrepreneurship Team,the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions. （PAPD）
