globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-12-00615.1
Scopus记录号: 2-s2.0-84885224737
论文题名:
Greenland surface mass balance as simulated by the community earth system model. Part I: Model evaluation and 1850-2005 results
作者: Vizcaíno M.; Lipscomb W.; Sacks W.J.; Van Angelen J.H.; Wouters B.; Van Den Broeke M.R.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期:20
起始页码: 7793
结束页码: 7812
语种: 英语
Scopus关键词: Atmospheric climate ; Earth system model ; Global climate model ; Greenland Ice Sheet ; High-resolution models ; Precipitation rates ; Regional climate models ; Surface mass balance ; Climate models ; Glacial geology ; Glaciers ; Rain ; Computer simulation ; computer simulation ; downscaling ; GIS ; ice sheet ; marginal sea ; mass balance ; numerical model ; observational method ; precipitation (climatology) ; regional climate ; Arctic ; Greenland ; Greenland Ice Sheet
英文摘要: The modeling of the surface mass balance (SMB) of the Greenland Ice Sheet (GIS) requires high-resolution models in order to capture the observed large gradients in the steep marginal areas.Until now, global climate models have not been considered suitable to model ice sheet SMB owing to model biases and insufficient resolution. This study analyzes the GIS SMBsimulated for the period 1850-2005 by the Community Earth SystemModel (CESM), which includes a new ice sheet component with multiple elevation classes for SMB calculations. The model is evaluated against observational data and output from the regional model Regional Atmospheric Climate Model version 2 (RACMO2). Because of a lack of major climate biases, a sophisticated calculation of snow processes (including surface albedo evolution) and an adequate downscaling technique, CESM is able to realistically simulate GIS surface climate and SMB.CESMSMBagrees reasonably well with in situ data from 475 locations (r = 0.80) and output from RACMO2 (r = 0.79). The simulated mean SMB for 1960-2005 is 359 ± 120 Gtyr-1 in the range of estimates from regional climate models. The simulated seasonal mass variability is comparable with mass observations from theGravity Recovery and Climate Experiment (GRACE), with synchronous annual maximum(May) and minimum (August-September) and similar amplitudes of the seasonal cycle. CESM is able to simulate the bands of precipitation maxima along the southeast and northwest margins, but absolute precipitation rates are underestimated along the southeastern margin and overestimated in the high interior. The model correctly simulates the major ablation areas. Total refreezing represents 35% of the available liquid water (the sum of rain and melt). © 2013 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51600
Appears in Collections:气候变化事实与影响

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作者单位: Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, Netherlands; Department of Geography, University of California, Berkeley, Berkeley, CA, United States; Group T-3, Fluid Dynamics and Solid Mechanics, Los Alamos National Laboratory, Los Alamos, Mexico; National Center for Atmospheric Research, Boulder, CO, United States; Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, Netherlands; Bristol Glaciology Centre, School of Geographical Sciences, University of Bristol, Bristol, United Kingdom; Department of Physics, University of Colorado at Boulder, Boulder, CO, United States; Department of Geoscience and Remote Sensing, Delft Institute of Technology, Delft, Netherlands

Recommended Citation:
Vizcaíno M.,Lipscomb W.,Sacks W.J.,et al. Greenland surface mass balance as simulated by the community earth system model. Part I: Model evaluation and 1850-2005 results[J]. Journal of Climate,2013-01-01,26(20)
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