DOI: 10.5194/cp-12-1619-2016
Scopus记录号: 2-s2.0-84981272218
论文题名: Sensitivity of Pliocene climate simulations in MRI-CGCM2.3 to respective boundary conditions
作者: Kamae Y. ; Yoshida K. ; Ueda H.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2016
卷: 12, 期: 8 起始页码: 1619
结束页码: 1634
语种: 英语
Scopus关键词: albedo
; atmosphere-ocean coupling
; boundary condition
; climate change
; climate modeling
; general circulation model
; heat transfer
; ice sheet
; paleoclimate
; paleoenvironment
; Pliocene
; proxy climate record
; regional climate
; sea ice
; sensitivity analysis
; warming
英文摘要: Accumulations of global proxy data are essential steps for improving reliability of climate model simulations for the Pliocene warming climate. In the Pliocene Model Intercomparison Project phase 2 (PlioMIP2), a part project of the Paleoclimate Modelling Intercomparison Project phase 4, boundary forcing data have been updated from the PlioMIP phase 1 due to recent advances in understanding of oceanic, terrestrial and cryospheric aspects of the Pliocene palaeoenvironment. In this study, sensitivities of Pliocene climate simulations to the newly archived boundary conditions are evaluated by a set of simulations using an atmosphere-ocean coupled general circulation model, MRI-CGCM2.3. The simulated Pliocene climate is warmer than pre-industrial conditions for 2.4°C in global mean, corresponding to 0.6°C warmer than the PlioMIP1 simulation by the identical climate model. Revised orography, lakes, and shrunk ice sheets compared with the PlioMIP1 lead to local and remote influences including snow and sea ice albedo feedback, and poleward heat transport due to the atmosphere and ocean that result in additional warming over middle and high latitudes. The amplified higher-latitude warming is supported qualitatively by the proxy evidences, but is still underestimated quantitatively. Physical processes responsible for the global and regional climate changes should be further addressed in future studies under systematic intermodel and data-model comparison frameworks. © 2016 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48985
Appears in Collections: 气候变化与战略
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Recommended Citation:
Kamae Y.,Yoshida K.,Ueda H.. Sensitivity of Pliocene climate simulations in MRI-CGCM2.3 to respective boundary conditions[J]. Climate of the Past,2016-01-01,12(8)