DOI: 10.1175/JCLI-D-12-00346.1
Scopus记录号: 2-s2.0-84880680909
论文题名: Control of mode and intermediate water mass properties in drake passage by the amundsen sea low
作者: Close S.E. ; Garabato A.C.N. ; Mcdonagh E.L. ; King B.A. ; Biuw M. ; Boehme L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 14 起始页码: 5102
结束页码: 5123
语种: 英语
Scopus关键词: Antarctic intermediate waters
; Inter-decadal variability
; Intermediate waters
; Sea ice formations
; Subantarctic mode water
; Subantarctic zones
; Turbulent heat fluxes
; Water-mass properties
; Air
; Heat flux
; Sea ice
; Oceanography
; air-sea interaction
; decadal variation
; Ekman transport
; evaporation
; heat flux
; intermediate water
; sea level change
; seasonal variation
; timescale
; turbulent flow
; water mass
; Amundsen Sea
; Antarctica
; Bellingshausen Sea
; Drake Passage
; Southern Ocean
英文摘要: The evolution of the physical properties of Subantarctic Mode Water (SAMW) and Antarctic Intermediate Water (AAIW) in the Drake Passage region is examined on time scales down to intraseasonal, within the 1969-2009 period. Both SAMW and AAIW experience substantial interannual to interdecadal variability, significantly linked to the action of the Amundsen Sea low (ASL) in their formation areas. Observations suggest that the interdecadal freshening tendency evident in SAMW over the past three decades has recently abated, while AAIW has warmed significantly since the early 2000s. The two water masses have also experienced a substantial lightening since the start of the record. Examination of the mechanisms underpinning water mass property variability shows that SAMW characteristics are controlled predominantly by a combination of air-sea turbulent heat fluxes, cross-frontal Ekman transport of Antarctic surface waters, and the evaporation-precipitation balance in the Subantarctic zone of the southeast Pacific and Drake Passage, while AAIW properties reflect air-sea turbulent heat fluxes and sea ice formation in the Bellingshausen Sea. The recent interdecadal evolution of the ASL is consistent with both the dominance of the processes described here and the response of SAMW and AAIW on that time scale. ©2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51812
Appears in Collections: 气候变化事实与影响
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作者单位: University of Southampton, National Oceanography Centre, Southampton, United Kingdom; National Oceanography Centre, Southampton, Southampton, United Kingdom; Norwegian Institute for Nature Research, Tromsø, Norway; Scottish Oceans Institute, St. Andrews, United Kingdom
Recommended Citation:
Close S.E.,Garabato A.C.N.,Mcdonagh E.L.,et al. Control of mode and intermediate water mass properties in drake passage by the amundsen sea low[J]. Journal of Climate,2013-01-01,26(14)