DOI: 10.1002/grl.50820
论文题名: The influence of recent Antarctic ice sheet retreat on simulated sea ice area trends
作者: Swart N.C. ; Fyfe J.C.
刊名: Geophysical Research Letters
ISSN: 0094-8627
EISSN: 1944-8358
出版年: 2013
卷: 40, 期: 16 起始页码: 4328
结束页码: 4332
语种: 英语
英文关键词: Antarctic
; climate change
; fresh water
; ice sheet
; sea ice
; Southern Ocean
Scopus关键词: Antarctic
; Antarctic ice sheets
; Coupled Model Intercomparison Project
; Fresh Water
; Historical periods
; Ice sheet
; Internal variability
; Southern ocean
; Climate change
; Climate models
; Computer simulation
; Glaciers
; Sea ice
; Water
; annual variation
; atmospheric forcing
; climate change
; ice sheet
; mass balance
; numerical model
; observational method
; sea ice
; Antarctica
; Southern Ocean
英文摘要: Observations indicate that dynamic mass loss from the Antarctic ice sheet has been accelerating over recent decades, leading to a freshening of the Southern Ocean. Here we quantify the effect of several rates and spatial distributions of freshwater forcing on simulated sea ice area trends. In contrast to a previous study, our simulations show that the freshwater effect on sea ice trends over the historical period is small and fails to reproduce the observed regional pattern of trends, when using observationally consistent rates of freshwater forcing. The Coupled Model Intercomparison Project Phase 5 (CMIP5) models do not represent this dynamic ice sheet mass loss, and it has been suggested that this deficiency may significantly influence the simulated sea ice trends. We show that when accounting for internal variability, the average CMIP5 sea ice area trend is statistically consistent with the observed trend, and accounting for ice sheet derived freshwater forcing has little influence. Key Points Antarctic Ice Sheet derived fresh water has a small influence on sea-ice trends The CMIP5 models do not represent this fresh water forcing The mean CMIP5 sea-ice area trend is statistically consistent with observations. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883082279&doi=10.1002%2fgrl.50820&partnerID=40&md5=2a432bbda40976010030279763db546e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5891
Appears in Collections: 气候减缓与适应
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作者单位: School of Earth and Ocean Sciences, University of Victoria, 3800 Finnerty Road (Ring Road), Victoria, BC V8P 5C2, Canada
Recommended Citation:
Swart N.C.,Fyfe J.C.. The influence of recent Antarctic ice sheet retreat on simulated sea ice area trends[J]. Geophysical Research Letters,2013-01-01,40(16).