气候变化领域集成服务门户(CCPortal): The Spatiotemporal Variability of Cloud Radiative Effects on the Greenland Ice Sheet Surface Mass Balance

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DOI	10.1029/2020GL087315
	The Spatiotemporal Variability of Cloud Radiative Effects on the Greenland Ice Sheet Surface Mass Balance
	Izeboud M.; Lhermitte S.; Van Tricht K.; Lenaerts J.T.M.; Van Lipzig N.P.M.; Wever N.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:12
英文摘要	To better understand and quantify the impact of clouds on the Greenland Ice Sheet surface mass balance (SMB), we study the spatiotemporal variability of the cloud radiative effect (CRE). The total CRE is separated in short-term and long-term impacts by performing multiple simulations with the SNOWPACK model for 2001-+2010. The annual total CRE is 16.8 ± 4.5 W m−2, reducing the SMB with −157 ± 3.8 Gt yr−1. Summer cloud radiative cooling is −6.4 ± 5.7 W m−2 in the ablation area, increasing the SMB with 121 ± 2.2 Gt yr−1. The annual integrated impact is cloud-reduced SMB of −36 Gt yr−1. The short-term effect dominates the opposing long-term effects through the albedo-melt feedback. A long-term warming effect decreases the albedo and so preconditions the surface for enhanced (summer) melt. The impact of the CRE, determined by spatial, temporal and initial conditions, explains existing conflicted views on the role of cloud radiation and emphasizes the need for accurate cloud and albedo representations in future studies. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Glaciers; Radiative Cooling; Solar radiation; Cloud radiation; Cloud radiative effects; Greenland Ice Sheet; Initial conditions; Long-term effects; Long-term impacts; Short-term effects; Spatiotemporal variability; Glacial geology; ablation; albedo; climate feedback; cloud radiative forcing; cooling; glacier mass balance; snowpack; spatiotemporal analysis; Arctic; Greenland; Greenland Ice Sheet
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170231
作者单位	Department of Geoscience and Remote Sensing, Delft University of Technology, Delft, Netherlands; VITO Remote Sensing, Mol, Belgium; Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO, United States; KU Leuven, Leuven, Belgium
推荐引用方式 GB/T 7714	Izeboud M.,Lhermitte S.,Van Tricht K.,et al. The Spatiotemporal Variability of Cloud Radiative Effects on the Greenland Ice Sheet Surface Mass Balance[J],2020,47(12).
APA	Izeboud M.,Lhermitte S.,Van Tricht K.,Lenaerts J.T.M.,Van Lipzig N.P.M.,&Wever N..(2020).The Spatiotemporal Variability of Cloud Radiative Effects on the Greenland Ice Sheet Surface Mass Balance.Geophysical Research Letters,47(12).
MLA	Izeboud M.,et al."The Spatiotemporal Variability of Cloud Radiative Effects on the Greenland Ice Sheet Surface Mass Balance".Geophysical Research Letters 47.12(2020).