气候变化领域集成服务门户(CCPortal): Simulated Impact of the Tibetan Glacier Expansion on the Eurasian Climate and Glacial Surface Mass Balance during the Last Glacial Maximum

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DOI	10.1175/JCLI-D-19-0763.1
	Simulated Impact of the Tibetan Glacier Expansion on the Eurasian Climate and Glacial Surface Mass Balance during the Last Glacial Maximum
	Liu Y.; Wu Y.; Lin Z.; Zhang Y.; Zhu J.; Yi C.
发表日期	2020
ISSN	0894-8755
起始页码	6491
结束页码	6509
卷号	33 期号:15
英文摘要	Glaciers over the Tibetan Plateau and surrounding regions during the Last Glacial Maximum (LGM) were much more extensive than during the preindustrial period (PI). The climate impact of such glacial expansion is studied here using the Community Atmosphere Model, version 4 (CAM4). To cover the range of uncertainty in glacier area during the LGM, the following three values are tested: 0.35 3 106, 0.53 3 106, and 0.70 3 106 km2. The added glacier is distributed approximately equally over the Pamir region and the Himalayas. If 0.70 3 106 km2 is used, the annual mean surface temperature of the glaciated regions would be cooled by ;3.58C. The annual mean precipitation would be reduced by 0.2mmday21 (10%) and 2.5mmday21 (24%) over the Pamir region and Himalayas, respectively. The surface mass balance (SMB) of the glaciers changes by 0.55myr21 (280%) and 20.32myr21 (220%) over the two regions, respectively. The changes in SMB remain large (0.29 and 20.13myr21), even if the area of the Tibetan glacier were 0.353106 km2. Therefore, based on the results of this particular model, the expansion of glaciers can either enhance or slow the glacial growth. Moreover, the expansion of glaciers over the Himalayas reduces summer precipitation in central and northern China by;0.5mmday21 and increases summer precipitation in southern Asia by ;0.6mmday21. The expansion of glaciers over the Pamir region has a negligible influence on the precipitation in these monsoonal regions, which is likely due to its large distance from the main monsoonal regions. © 2020 American Meteorological Society. All rights reserved.
英文关键词	Expansion; Glacial geology; Annual mean precipitation; Community atmosphere model; Last Glacial Maximum; Summer precipitation; Surface mass balance; Surface temperatures; Surrounding regions; Tibetan Plateau; Climate models; climate effect; glacier; glacier mass balance; Last Glacial Maximum; precipitation (climatology); surface temperature; China; Himalayas; Pamirs; Qinghai-Xizang Plateau
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171200
作者单位	Department of Atmospheric and Oceanic Sciences, Peking University, Beijing, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; School of Atmospheric Sciences, Nanjing University, Nanjing, China; Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, United States; Institute of Tibetan Plateau Research, Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Liu Y.,Wu Y.,Lin Z.,et al. Simulated Impact of the Tibetan Glacier Expansion on the Eurasian Climate and Glacial Surface Mass Balance during the Last Glacial Maximum[J],2020,33(15).
APA	Liu Y.,Wu Y.,Lin Z.,Zhang Y.,Zhu J.,&Yi C..(2020).Simulated Impact of the Tibetan Glacier Expansion on the Eurasian Climate and Glacial Surface Mass Balance during the Last Glacial Maximum.Journal of Climate,33(15).
MLA	Liu Y.,et al."Simulated Impact of the Tibetan Glacier Expansion on the Eurasian Climate and Glacial Surface Mass Balance during the Last Glacial Maximum".Journal of Climate 33.15(2020).