气候变化领域集成服务门户(CCPortal): Impact of Cloud Physics on the Greenland Ice Sheet Near-Surface Climate: A Study With the Community Atmosphere Model

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DOI	10.1029/2019JD031470
	Impact of Cloud Physics on the Greenland Ice Sheet Near-Surface Climate: A Study With the Community Atmosphere Model
	Lenaerts J.T.M.; Gettelman A.; Van Tricht K.; van Kampenhout L.; Miller N.B.
发表日期	2020
ISSN	2169897X
卷号	125 期号:7
英文摘要	The Greenland Ice Sheet (GrIS) is losing mass in an accelerated fashion, which is for ~60% dominated by an increase in surface melting. Clouds exhibit an important control on the GrIS surface energy balance and surface melt. Therefore, to better simulate present and future GrIS climate, it is essential to represent clouds correctly in climate models. Here we use ground (at Summit Station) and satellite remote sensing (from CloudSat-CALIPSO) observations to evaluate GrIS cloud characteristics in several versions of the Community Atmosphere Model (CAM) over the period 2007–2012. Cloud cover, phase, water path, and radiative effects over the GrIS vary widely across the atmosphere models. Thanks to the inclusion of new cloud physical parameterizations, that is, ice nucleation and prognostic precipitation, in the most recent CAM version (CAM6), this model, amongst the various CAM versions, is best able to represent GrIS clouds, summer temperatures, and surface melting. However, CAM6 shows excessive rainfall over the ice sheet, which is an important outstanding model bias. Our study demonstrates the importance of simulating realistic cloud properties to improve climate model simulations of GrIS climate and climate change. ©2020. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186066
作者单位	Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO, United States; National Center for Atmospheric Research, Boulder, CO, United States; Remote Sensing Unit, Flemish Institute for Technological Research (VITO), Mol, Belgium; Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, Netherlands; CIRES, University of Colorado Boulder, Boulder, CO, United States
推荐引用方式 GB/T 7714	Lenaerts J.T.M.,Gettelman A.,Van Tricht K.,et al. Impact of Cloud Physics on the Greenland Ice Sheet Near-Surface Climate: A Study With the Community Atmosphere Model[J],2020,125(7).
APA	Lenaerts J.T.M.,Gettelman A.,Van Tricht K.,van Kampenhout L.,&Miller N.B..(2020).Impact of Cloud Physics on the Greenland Ice Sheet Near-Surface Climate: A Study With the Community Atmosphere Model.Journal of Geophysical Research: Atmospheres,125(7).
MLA	Lenaerts J.T.M.,et al."Impact of Cloud Physics on the Greenland Ice Sheet Near-Surface Climate: A Study With the Community Atmosphere Model".Journal of Geophysical Research: Atmospheres 125.7(2020).