Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-019-04663-x |
Applying the Community Ice Sheet Model to evaluate PMIP3 LGM climatologies over the North American ice sheets | |
Alder, Jay R.; Hostetler, Steven W. | |
2019-09-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 53页码:2807-2824 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | We apply the Community Ice Sheet Model (CISM2) to determine the extent to which the Last Glacial Maximum (LGM) temperature and precipitation climatologies from the Paleoclimate Modelling Intercomparison Project 3 (PMIP3) simulations support the large North American ice sheets that were prescribed as a boundary condition. We force CISM2 with eight PMIP3 general circulation models (GCMs), and an additional model, GENMOM. Seven GCMs simulate LGM climatologies that support positive surface mass balances of the Laurentide and Cordilleran ice sheets (LIS, CIS) consistent with where ice was prescribed in the GCMs. Two GCMs simulate July temperatures that are too warm to support the ice sheets. Four of the nine CISM2 simulations support ice sheets in Beringia, in absence of prescribed ice in the driving GCMs and in disagreement with geologic evidence that indicates the area remained ice-free during the LGM. We test the sensitivity of our results to a range of snow and ice positive degree-day factors, daily, monthly, and climatological temperature and precipitation inputs, and we evaluate the role of albedo and snow in the simulations. Areas with perennial snow in the GCM simulations correspond well to the presence of ice in the CISM2 simulation. GCMs with unrealistically low surface albedos over the LIS yield simulations that fail to simulate realistic ice sheets. |
英文关键词 | PMIP3 LGM Model evaluation CISM2 Ice sheet modeling |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000483626900020 |
WOS关键词 | LAST GLACIAL MAXIMUM ; LARGE ENSEMBLE ANALYSIS ; SEA-LEVEL ; SYSTEM MODEL ; NUMERICAL RECONSTRUCTIONS ; ICE-6G-C RECONSTRUCTION ; CLIMATE MODEL ; SIMULATIONS ; GREENLAND ; SENSITIVITY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/186348 |
专题 | 气候变化 |
作者单位 | US Geol Survey, 104 CEOAS Admin Bldg, Corvallis, OR 97331 USA |
推荐引用方式 GB/T 7714 | Alder, Jay R.,Hostetler, Steven W.. Applying the Community Ice Sheet Model to evaluate PMIP3 LGM climatologies over the North American ice sheets[J]. CLIMATE DYNAMICS,2019,53:2807-2824. |
APA | Alder, Jay R.,&Hostetler, Steven W..(2019).Applying the Community Ice Sheet Model to evaluate PMIP3 LGM climatologies over the North American ice sheets.CLIMATE DYNAMICS,53,2807-2824. |
MLA | Alder, Jay R.,et al."Applying the Community Ice Sheet Model to evaluate PMIP3 LGM climatologies over the North American ice sheets".CLIMATE DYNAMICS 53(2019):2807-2824. |
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