大气科学2025，Vol.49Issue(6)：1779-1790,12.DOI:10.3878/j.issn.1006-9895.2502.24082
基于速度势的热带大气环流分解及其对全球平均海平面上升的响应
Decomposition of Tropical Atmospheric Circulations Based on Velocity Potential and Their Responses to Global Mean Sea Level Rise
摘要
Abstract
GMSL(Global Mean Sea Level)has risen by 0.16 m over the past century,posing various climate challenges at both global and regional scales.Tropical atmospheric circulations,key drivers of weather and climate anomalies,play critical roles in regulating global heat and moisture exchange.Understanding how GMSL rise influences these circulations can help improve climate change adaptation and mitigation strategies.In this study,we used climate model simulations based on the Norwegian Earth System Model to examine the response of tropical atmospheric circulations to GMSL rise.The upper tropospheric velocity potential was decomposed into components related to the Hadley circulation,Pacific Walker circulation,and monsoon circulation.Then,we investigated how these components change under different GMSL rise scenarios.The results show that the velocity potential decomposition method effectively captures the climatological patterns and seasonal evolutions of tropical atmospheric circulations.Further,in response to GMSL rise,the Hadley circulation weakens in both the Northern Hemisphere and Southern Hemisphere(SH)during boreal summer,and the SH Hadley circulation strengthens during the boreal winter.The Pacific Walker circulation shows a slight intensification and exhibits a shift toward the east.The East Asian winter and summer monsoons intensify with the rising GMSL.关键词
海平面上升/速度势分解/哈德莱环流/沃克环流/季风环流Key words
Global mean sea level rise/Velocity potential decomposition/Hadley circulation/Walker circulation/Monsoon circulation分类
天文与地球科学引用本文复制引用
何雨心,巫明娜,张仲石..基于速度势的热带大气环流分解及其对全球平均海平面上升的响应[J].大气科学,2025,49(6):1779-1790,12.基金项目
国家自然科学基金项目42125502、42305027,中国博士后科学基金项目2023M733292 National Natural Science Foundation of China(Grants 42125502,42305027),China Postdoctoral Science Foundation(Grant 2023M733292) （Grants 42125502,42305027）
