DOI: 10.5194/cp-10-79-2014
Scopus记录号: 2-s2.0-84892608937
论文题名: Evaluating the dominant components of warming in Pliocene climate simulations
作者: Hill D.J. ; Haywood A.M. ; Lunt D.J. ; Hunter S.J. ; Bragg F.J. ; Contoux C. ; Stepanek C. ; Sohl L. ; Rosenbloom N.A. ; Chan W.-L. ; Kamae Y. ; Zhang Z. ; Abe-Ouchi A. ; Chandler M.A. ; Jost A. ; Lohmann G. ; Otto-Bliesner B.L. ; Ramstein G. ; Ueda H.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2014
卷: 10, 期: 1 起始页码: 79
结束页码: 90
语种: 英语
Scopus关键词: air-sea interaction
; albedo
; boundary condition
; carbon dioxide
; climate modeling
; concentration (composition)
; energy balance
; global warming
; greenhouse gas
; Northern Hemisphere
; numerical model
; paleoclimate
; Pliocene
; sea ice
英文摘要: The Pliocene Model Intercomparison Project (PlioMIP) is the first coordinated climate model comparison for a warmer palaeoclimate with atmospheric CO2 significantly higher than pre-industrial concentrations. The simulations of the mid-Pliocene warm period show global warming of between 1.8 and 3.6 °C above pre-industrial surface air temperatures, with significant polar amplification. Here we perform energy balance calculations on all eight of the coupled ocean-atmosphere simulations within PlioMIP Experiment 2 to evaluate the causes of the increased temperatures and differences between the models. In the tropics simulated warming is dominated by greenhouse gas increases, with the cloud component of planetary albedo enhancing the warming in most of the models, but by widely varying amounts. The responses to mid-Pliocene climate forcing in the Northern Hemisphere midlatitudes are substantially different between the climate models, with the only consistent response being a warming due to increased greenhouse gases. In the high latitudes all the energy balance components become important, but the dominant warming influence comes from the clear sky albedo, only partially offset by the increases in the cooling impact of cloud albedo. This demonstrates the importance of specified ice sheet and high latitude vegetation boundary conditions and simulated sea ice and snow albedo feedbacks. The largest components in the overall uncertainty are associated with clouds in the tropics and polar clear sky albedo, particularly in sea ice regions. These simulations show that albedo feedbacks, particularly those of sea ice and ice sheets, provide the most significant enhancements to high latitude warming in the Pliocene. © 2014 Author(s).
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49326
Appears in Collections: 气候变化与战略
There are no files associated with this item.
Recommended Citation:
Hill D.J.,Haywood A.M.,Lunt D.J.,et al. Evaluating the dominant components of warming in Pliocene climate simulations[J]. Climate of the Past,2014-01-01,10(1)