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学科主题: Meteorology & Atmospheric Sciences
题名: Decadal changes of wind stress over the Southern Ocean associated with Antarctic ozone depletion
作者: Yang, XY ; Huang, RX ; Wang, DX
通讯作者: yxy@scsio.ac.cn
刊名: JOURNAL OF CLIMATE
发表日期: 2007
卷: 20, 期:14, 页:3395-3410
收录类别: sci
部门归属: Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Trop Marine Environm Dynam, Guangzhou 510301, Peoples R China; Woods Hole Oceanog Inst, Dept Phys Oceanog, Woods Hole, MA 02543 USA
项目归属: LED
摘要: Using 40-yr ECMWF Re-Analysis (ERA-40) data and in situ observations, the positive trend of Southern Ocean surface wind stress during two recent decades is detected, and its close linkage with spring Antarctic ozone depletion is established. The spring Antarctic ozone depletion affects the Southern Hemisphere lower-stratospheric circulation in late spring/early summer. The positive feedback involves the strengthening and cooling of the polar vortex, the enhancement of meridional temperature gradients and the meridional and vertical potential vorticity gradients, the acceleration of the circumpolar westerlies, and the reduction of the upward wave flux. This feedback loop, together with the ozone-related photochemical interaction, leads to the upward tendency of lower-stratospheric zonal wind in austral summer. In addition, the stratosphere-troposphere coupling, facilitated by ozone-related dynamics and the Southern Annular Mode, cooperates to relay the zonal wind anomalies to the upper troposphere. The wave-mean flow interaction and the meridional circulation work together in the form of the Southern Annular Mode, which transfers anomalous wind signals downward to the surface, triggering a striking strengthening of surface wind stress over the Southern Ocean.
原文出处: 查看原文
WOS记录号: WOS:000248484700004
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/5863
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Yang, XY; Huang, RX; Wang, DX.Decadal changes of wind stress over the Southern Ocean associated with Antarctic ozone depletion,JOURNAL OF CLIMATE,2007,20(14):3395-3410
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