DOI: 10.1002/2015GL065957
论文题名: Wind-driven freshwater buildup and release in the Beaufort Gyre constrained by mesoscale eddies
作者: Manucharyan G.E. ; Spall M.A.
刊名: Geophysical Research Letters
ISSN: 0094-9490
EISSN: 1944-9221
出版年: 2016
卷: 43, 期: 1 起始页码: 273
结束页码: 282
语种: 英语
英文关键词: Arctic halocline
; Beaufort Gyre
; Eddy saturation
; Ekman pumping
; Freshwater content
Scopus关键词: Spin dynamics
; Arctic halocline
; Atmospheric Winds
; Beaufort Gyre
; Ekman pumping
; Explicit dependences
; Freshwater contents
; High sensitivity
; Physical process
; Water
; anticyclone
; Ekman pumping
; freshwater input
; gyre
; halocline
; mesoscale eddy
; saturation
; sensitivity analysis
; wind forcing
; Arctic
; Arctic Ocean
; Beaufort Sea
英文摘要: Recently, the Beaufort Gyre has accumulated over 20,000 km3 of freshwater in response to strong anticyclonic atmospheric winds that have prevailed over the gyre for almost two decades. Here we explore key physical processes affecting the accumulation and release of freshwater within an idealized eddy-resolving model of the Beaufort Gyre. We demonstrate that a realistic halocline can be achieved when its deepening tendency due to Ekman pumping is counteracted by the cumulative action of mesoscale eddies. Based on this balance, we derive analytical scalings for the depth of the halocline and its spin-up time scale and emphasize their explicit dependence on eddy dynamics. Our study further suggests that the Beaufort Gyre is currently in a state of high sensitivity to atmospheric winds. However, an intensification of surface stress would inevitably lead to a saturation of the freshwater content - a constraint inherently set by the intricacies of the mesoscale eddy dynamics. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84970870620&doi=10.1002%2f2015GL065957&partnerID=40&md5=4b9b2f5bb2f22d35766e76cbb055f21d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10453
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: Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
Recommended Citation:
Manucharyan G.E.,Spall M.A.. Wind-driven freshwater buildup and release in the Beaufort Gyre constrained by mesoscale eddies[J]. Geophysical Research Letters,2016-01-01,43(1).