DOI: 10.1002/2015GL064364
论文题名: Replicating the 1970s' Weddell Polynya using a coupled ocean-sea ice model with reanalysis surface flux fields
作者: Cheon W.G. ; Lee S.-K. ; Gordon A.L. ; Liu Y. ; Cho C.-B. ; Park J.J.
刊名: Geophysical Research Letters
ISSN: 0094-9142
EISSN: 1944-8873
出版年: 2015
卷: 42, 期: 13 起始页码: 5411
结束页码: 5418
语种: 英语
英文关键词: open-ocean deep convection
; Southern Annular Mode
; Southern Hemisphere westerlies
; Weddell Polynya
Scopus关键词: Ice
; Natural convection
; Oceanography
; Phase interfaces
; Reservoirs (water)
; Surface measurement
; Air-sea interface
; Brine rejections
; Deep convection
; Southern Annular Mode
; Southern Hemisphere
; Weddell deep waters
; Weddell Polynya
; Wind stress curl
; Sea ice
; air-sea interaction
; brine
; cooling
; melting
; oceanic convection
; open ocean
; polynya
; sea ice
; Southern Hemisphere
; surface flux
; water column
; westerly
; wind stress
; Southern Ocean
; Weddell Sea
英文摘要: The 1970s' Weddell Polynya is simulated in the framework of a coupled ocean-sea ice model forced by reanalysis surface flux fields. A rapid emergence of strongly negative wind stress curl over the Weddell Sea intensifies the cyclonic Weddell gyre and thus causes the relatively warm and salty Weddell Deep Water (WDW) to upwell, generating an open-ocean polynya by melting sea ice or hindering its formation. Once the polynya occurs in the austral winter, the underlying water column is destabilized due to the combined effect of the high-salinity WDW, a massive cooling at the air-sea interface, and the ensuing brine rejection from newly forming ice, thus inducing open-ocean deep convection. Further analysis shows that the buildup of a large heat reservoir at depth by the mid-1970s was a necessary condition to establish the Weddell Polynya of the 1970s. Key Points A strong, negative wind stress curl generates the Weddell Polynya via upwelling A high heat content of deep water is a necessary condition for Weddell Polynya The next Weddell Polynya may occur when the SAM shift to an upward trend. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938214508&doi=10.1002%2f2015GL064364&partnerID=40&md5=a42043d2efa51625279d60d5a34d2180
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8758
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: 6th R and D Institute-1, Agency for Defense Development, Changwon, South Korea
Recommended Citation:
Cheon W.G.,Lee S.-K.,Gordon A.L.,et al. Replicating the 1970s' Weddell Polynya using a coupled ocean-sea ice model with reanalysis surface flux fields[J]. Geophysical Research Letters,2015-01-01,42(13).