DOI: 10.1002/2014GL059770
论文题名: Impact of reduced Arctic sea ice on Greenland ice sheet variability in a warmer than present climate
作者: Koenig S.J. ; Deconto R.M. ; Pollard D.
刊名: Geophysical Research Letters
ISSN: 0094-10582
EISSN: 1944-10313
出版年: 2014
卷: 41, 期: 11 起始页码: 3934
结束页码: 3943
语种: 英语
英文关键词: climate dynamics
; climate modeling
; Greenland ice sheet
; ice sheet modeling
; Pliocene
; sea ice
Scopus关键词: Climate models
; Oceanography
; Sea ice
; Climate dynamics
; Global climate model
; Greenland Ice Sheet
; Ice sheet models
; Ocean conditions
; Pliocene
; Radiation budget
; Sea surface temperatures
; Glaciers
; climate modeling
; glaciation
; global climate
; ice sheet
; orbital forcing
; proxy climate record
; sea ice
; Arctic
; Arctic Ocean
; Greenland
; Greenland Ice Sheet
英文摘要: A global climate model with interactive vegetation and a coupled ice sheet-shelf component is used to test the response of the Greenland ice sheet (GIS) to increased sea surface temperatures (SSTs) and reduced sea ice (SI) cover during the mid-Pliocene warm period (∼3 Ma) as reconstructed from proxy records. Seasonally open water in the Arctic and North Atlantic are shown to alter regional radiation budgets, storm tracks, and moisture and heat advection into the Greenland interior, with increases in temperature rather than precipitation dominating the ice sheets response. When applied to an initially glaciated Greenland, the presumed warm, ice-free Pliocene ocean conditions induce rapid melting of nearly the entire ice sheet and preclude a modern-like GIS from (re)growing, regardless of orbital forcing. The sensitivity of Greenland to imposed Pliocene ocean conditions may have serious implications for the future response of the ice sheet to continued warming in the Arctic basin. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902068641&doi=10.1002%2f2014GL059770&partnerID=40&md5=ae837dc28323e15822ecce51d49c9280
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7846
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geosciences, University of Massachusetts Amherst, Amherst, MA, United States
Recommended Citation:
Koenig S.J.,Deconto R.M.,Pollard D.. Impact of reduced Arctic sea ice on Greenland ice sheet variability in a warmer than present climate[J]. Geophysical Research Letters,2014-01-01,41(11).