DOI: 10.1175/JCLI-D-12-00765.1
Scopus记录号: 2-s2.0-84885357480
论文题名: Decadal freshening of the antarctic bottom water exported from the weddell sea
作者: Jullion L. ; Garabato A.C.N. ; Meredith M.P. ; Holland P.R. ; Courtois P. ; King B.A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 20 起始页码: 8111
结束页码: 8125
语种: 英语
Scopus关键词: Antarctic Bottom Water
; Antarctic Circumpolar Currents
; Antarctic Peninsula
; Antarctic regions
; Anthropogenic components
; Ongoing changes
; Overturning circulation
; Southern Hemisphere
; Ocean currents
; Sea ice
; Geographical regions
; abyssal zone
; air-sea interaction
; Antarctic Bottom Water
; climate change
; climate forcing
; cryosphere
; decadal variation
; glacier dynamics
; ice shelf
; melt
; overturn
; shelf sea
; Southern Hemisphere
; Antarctic Circumpolar Current
; Antarctic Peninsula
; Antarctica
; Southern Ocean
; Weddell Sea
; West Antarctica
英文摘要: Recent decadal changes in Southern Hemisphere climate have driven strong responses from the cryosphere. Concurrently, there has been a marked freshening of the shelf and bottom waters across a wide sector of the Southern Ocean, hypothesized to be caused by accelerated glacial melt in response to a greater flux of warm waters from the Antarctic Circumpolar Current onto the shelves of West Antarctica. However, the circumpolar pattern of changes has been incomplete: no decadal freshening in the deep layers of the Atlantic sector has been observed. In this study, the authors document a significant freshening of the Antarctic Bottom Water exported from the Weddell Sea, which is the source for the abyssal layer of the Atlantic overturning circulation, and trace its possible origin to atmospheric-forced changes in the ice shelves and sea ice on the eastern flank of the Antarctic Peninsula that include an anthropogenic component. These findings suggest that the expansive and relatively cool Weddell gyre does not insulate the bottom water formation regions in the Atlantic sector from the ongoing changes in climatic forcing over the Antarctic region. ©2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51609
Appears in Collections: 气候变化事实与影响
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作者单位: National Oceanography Centre, University of Southampton, Southampton, United Kingdom; Geophysical Fluid Dynamics Institute, Florida State University, Tallahassee, FL 32306, United States; British Antarctic Survey, Cambridge, United Kingdom; National Oceanography Centre, Southampton, United Kingdom; Geophysical Fluid Dynamics Institute, Florida State University, Tallahassee, FL, United States
Recommended Citation:
Jullion L.,Garabato A.C.N.,Meredith M.P.,et al. Decadal freshening of the antarctic bottom water exported from the weddell sea[J]. Journal of Climate,2013-01-01,26(20)