DOI: 10.1002/2015GL064626
论文题名: Potential positive feedback between Greenland Ice Sheet melt and Baffin Bay heat content on the west Greenland shelf
作者: Castro De La Guardia L. ; Hu X. ; Myers P.G.
刊名: Geophysical Research Letters
ISSN: 0094-8653
EISSN: 1944-8384
出版年: 2015
卷: 42, 期: 12 起始页码: 4922
结束页码: 4930
语种: 英语
英文关键词: Baffin Bay
; CAA freshwater transport
; Greenland ice sheet melt
; heat content
; west Greenland Irminger water
Scopus关键词: Enthalpy
; Feedback
; Glaciers
; Runoff
; Sea ice
; Surface waters
; Water
; Baffin Bay
; Canadian Arctic Archipelago
; Freshwater transports
; Greenland Ice Sheet
; Gyre circulation
; Numerical experiments
; Sea surface height
; West Greenland
; Ice
; feedback mechanism
; fjord
; freshwater
; gyre
; heat flow
; ice-ocean interaction
; meltwater
; numerical model
; runoff
; sea surface height
; stratification
; water exchange
; Arctic
; Arctic Ocean
; Atlantic Ocean
; Baffin Bay [Arctic Ocean]
; Canada
; Canadian Arctic
; Davis Strait
; Greenland
; Greenland Ice Sheet
; Irminger Current
; West Greenland
英文摘要: Greenland ice sheet meltwater runoff has been increasing in recent decades, especially in the southwest and the northeast. To determine the impact of this accelerating meltwater flux on Baffin Bay, we examine eight numerical experiments using an ocean-sea ice model: Nucleus for European Modelling of the Ocean. Enhanced runoff causes shoreward increasing sea surface height and strengthens the stratification in Baffin Bay. The changes in sea surface height reduces the southward transport through the Canadian Arctic Archipelago and strengthens the gyre circulation within Baffin Bay. The latter leads to further freshening of surface waters as it produces a larger northward surface freshwater transport across Davis Strait. Increasing the meltwater runoff leads to a warming and shallowing of the west Greenland Irminger water on the northwest Greenland shelf. These warmer waters can now more easily enter fjords on the Greenland coast and thus provide additional heat to accelerate the melting of marine-terminating glaciers. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948714444&doi=10.1002%2f2015GL064626&partnerID=40&md5=6e947eddb4e5170f448eaf2fda9bbf96
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8269
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 Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB, Canada
Recommended Citation:
Castro De La Guardia L.,Hu X.,Myers P.G.. Potential positive feedback between Greenland Ice Sheet melt and Baffin Bay heat content on the west Greenland shelf[J]. Geophysical Research Letters,2015-01-01,42(12).