DOI: 10.1002/2016GL067818
论文题名: Ocean temperature thresholds for Last Interglacial West Antarctic Ice Sheet collapse
作者: Sutter J. ; Gierz P. ; Grosfeld K. ; Thoma M. ; Lohmann G.
刊名: Geophysical Research Letters
ISSN: 0094-9183
EISSN: 1944-8914
出版年: 2016
卷: 43, 期: 6 起始页码: 2675
结束页码: 2682
语种: 英语
英文关键词: Antarctica
; ice sheet modeling
; Last Interglacial
; paleoclimate
; sea level
; WAIS collapse
Scopus关键词: Atmospheric thermodynamics
; Climate change
; Glacial geology
; Glaciers
; Oceanography
; Sea level
; Antarctica
; Ice sheet models
; Last interglacial
; Paleoclimates
; WAIS collapse
; Ice
; atmosphere-ocean system
; fossil record
; general circulation model
; hydrological modeling
; Last Interglacial
; melting
; paleoclimate
; reef
; sea level change
; sea surface temperature
; temperature anomaly
; three-dimensional modeling
; threshold
; warming
; Antarctic Ice Sheet
; Antarctica
; Arctic
; Greenland
; Greenland Ice Sheet
; Southern Ocean
; West Antarctic Ice Sheet
; West Antarctica
英文摘要: The West Antarctic Ice Sheet (WAIS) is considered the major contributor to global sea level rise in the Last Interglacial (LIG) and potentially in the future. Exposed fossil reef terraces suggest sea levels in excess of 7 m in the last warm era, of which probably not much more than 2 m are considered to originate from melting of the Greenland Ice Sheet. We simulate the evolution of the Antarctic Ice Sheet during the LIG with a 3-D thermomechanical ice sheet model forced by an atmosphere-ocean general circulation model (AOGCM). Our results show that high LIG sea levels cannot be reproduced with the atmosphere-ocean forcing delivered by current AOGCMs. However, when taking reconstructed Southern Ocean temperature anomalies of several degrees, sensitivity studies indicate a Southern Ocean temperature anomaly threshold for total WAIS collapse of 2-3°C, accounting for a sea level rise of 3-4 m during the LIG. Potential future Antarctic Ice Sheet dynamics range from a moderate retreat to a complete collapse, depending on rate and amplitude of warming. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979491479&doi=10.1002%2f2016GL067818&partnerID=40&md5=a36ce2be4341594825e37175ba0cde1b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10146
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: Paleoclimate Dynamics, Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
Recommended Citation:
Sutter J.,Gierz P.,Grosfeld K.,et al. Ocean temperature thresholds for Last Interglacial West Antarctic Ice Sheet collapse[J]. Geophysical Research Letters,2016-01-01,43(6).