DOI: 10.5194/cp-11-403-2015
Scopus记录号: 2-s2.0-84924257311
论文题名: Using results from the PlioMIP ensemble to investigate the Greenland Ice Sheet during the mid-Pliocene Warm Period
作者: Dolan A.M. ; Hunter S.J. ; Hill D.J. ; Haywood A.M. ; Koenig S.J. ; Otto-Bliesner B.L. ; Abe-Ouchi A. ; Bragg F. ; Chan W.-L. ; Chandler M.A. ; Contoux C. ; Jost A. ; Kamae Y. ; Lohmann G. ; Lunt D.J. ; Ramstein G. ; Rosenbloom N.A. ; Sohl L. ; Stepanek C. ; Ueda H. ; Yan Q. ; Zhang Z.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2015
卷: 11, 期: 3 起始页码: 403
结束页码: 424
语种: 英语
Scopus关键词: albedo
; carbon dioxide
; climate modeling
; climatology
; ensemble forecasting
; GRIP
; ice free corridor
; ice sheet
; paleoclimate
; Pliocene
; reconstruction
; Arctic
; Greenland
; Greenland Ice Sheet
英文摘要: During an interval of the Late Pliocene, referred to here as the mid-Pliocene Warm Period (mPWP; 3.264 to 3.025 million years ago), global mean temperature was similar to that predicted for the end of this century, and atmospheric carbon dioxide concentrations were higher than pre-industrial levels. Sea level was also higher than today, implying a significant reduction in the extent of the ice sheets. Thus, the mPWP provides a natural laboratory in which to investigate the long-term response of the Earth's ice sheets and sea level in a warmer-than-present-day world. At present, our understanding of the Greenland ice sheet during the mPWP is generally based upon predictions using single climate and ice sheet models. Therefore, it is essential that the model dependency of these results is assessed. The Pliocene Model Intercomparison Project (PlioMIP) has brought together nine international modelling groups to simulate the warm climate of the Pliocene. Here we use the climatological fields derived from the results of the 15 PlioMIP climate models to force an offline ice sheet model. We show that mPWP ice sheet reconstructions are highly dependent upon the forcing climatology used, with Greenland reconstructions ranging from an ice-free state to a near-modern ice sheet. An analysis of the surface albedo variability between the climate models over Greenland offers insights into the drivers of inter-model differences. As we demonstrate that the climate model dependency of our results is high, we highlight the necessity of data-based constraints of ice extent in developing our understanding of the mPWP Greenland ice sheet. © Author(s) 2015. 资助项目: ERC, National Centre for Atmospheric Science
; JSPS, National Centre for Atmospheric Science
; NCAS, National Centre for Atmospheric Science
; NERC, National Centre for Atmospheric Science
; NSF, National Centre for Atmospheric Science
; NERC, National Centre for Atmospheric Science
; NASA, National Centre for Atmospheric Science
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49167
Appears in Collections: 气候变化与战略
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Recommended Citation:
Dolan A.M.,Hunter S.J.,Hill D.J.,et al. Using results from the PlioMIP ensemble to investigate the Greenland Ice Sheet during the mid-Pliocene Warm Period[J]. Climate of the Past,2015-01-01,11(3)