报告详情
Contribution of Agulhas Leakage to the “Saltier Atlantic-Fresher Indian” Trend
编号：311
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更新：2024-10-11 17:41:32 浏览：175次
张贴报告
报告开始：2025年01月15日 17:50（Asia/Shanghai）
报告时间：15min
所在会场：[S60] Session 60-Indian Ocean Dynamics, Air-sea Interaction and Biogeochemical Cycles [S60-P] Indian Ocean Dynamics, Air-sea Interaction and Biogeochemical Cycles
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摘要
With the global warming, surface salinity increases (decreases) in evaporation (precipitation) dominated regions, the Atlantic–Indian salinity contrast increases, and the upper thermocline salinity maximum increases while the salinity minimum of intermediate waters decreases. The greater Agulhas system around southern Africa forms a key component of the global ocean circulation. This system feeds the upper arm of the Atlantic meridional overturning circulation (AMOC) through the leakage of warm, saline waters from the Indian Ocean to the Atlantic. Over longer periods, theory suggests its variability is associated with the large-scale wind field, in particular with the position of the maximum Southern Hemisphere westerly winds. These winds are related to the latitude of the oceanic subtropical front (STF), which separates the subtropical gyre from the Antarctic Circumpolar Current. In essence, if the westerlies shift southwards, as recent data suggest in a warming climate, then the oceanic ‘gateway’ between the African continent and the STF expands and leakage from the Indian Ocean to the Atlantic changes. Then the salt flux between the Atlantic and Indian Oceans changes. How does Agulhas leakage contribute to the “Saltier Atlantic-Fresher Indian” trend?
关键词
Agulhas Leakage; salinity trend; south Indian Ocean; south Atlantic Ocean
报告人
Rong Cui
PhD student Hohai University稿件作者
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重要日期
-
会议日期
01月13日
2025
至01月17日
2025
-
09月27日 2024
初稿截稿日期
-
01月17日 2025
注册截止日期
主办单位
State Key Laboratory of Marine Environmental Science, Xiamen University
承办单位
State Key Laboratory of Marine Environmental Science, Xiamen University
Department of Earth Sciences, National Natural Science Foundation of China
Department of Earth Sciences, National Natural Science Foundation of China
联系方式
- Kejing GU
- xm******@xmu.edu.cn
- +86*********
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