气候变化领域集成服务门户(CCPortal): Decay of the Snow Cover Over Arctic Sea Ice From ICESat-2 Acquisitions During Summer Melt in 2019

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DOI	10.1029/2020GL088209
	Decay of the Snow Cover Over Arctic Sea Ice From ICESat-2 Acquisitions During Summer Melt in 2019
	Kwok R.; Cunningham G.F.; Kacimi S.; Webster M.A.; Kurtz N.T.; Petty A.A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:12
英文摘要	From the onset of melt in early June, corresponding declines in Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) freeboard and surface albedo can be seen over the entire Arctic sea ice cover. In the 2019 summer, area-averaged freeboard decreased from 34 cm prior to melt to a minimum of 12 cm in August while the area-averaged albedo decreased from ~0.7 to 0.38 for the same period. Calculations using ICESat-2 freeboards and modeled ice thickness from Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS) give area-averaged snow depths ranging from 17 cm prior to melt to 3 cm in August over seasonal ice and from 34 to 4 cm over multiyear ice. Mean rates of snow ablation (including evaporation) in mid-June were as high as 2 cm/day, comparable to field records from other years. Increases in freeboard after mid-August in the high latitude (>80°N) multiyear ice cover, north of the Greenland coast, are likely due to earlier freeze-up and snow accumulation in these regions with shorter melt seasons. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Sea ice; Solar radiation; Arctic sea ice; Assimilation system; High Latitudes; Land elevation satellites; Multi-year ices; Snow ablation; Snow accumulation; Surface albedo; Snow; ablation; albedo; ice thickness; satellite altimetry; seasonality; snow accumulation; snow cover; snowmelt; Arctic Ocean; Greenland Sea; Norwegian Sea
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/170249
作者单位	Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, United States; Goddard Space Flight Center, Greenbelt, MD, United States; Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
推荐引用方式 GB/T 7714	Kwok R.,Cunningham G.F.,Kacimi S.,et al. Decay of the Snow Cover Over Arctic Sea Ice From ICESat-2 Acquisitions During Summer Melt in 2019[J],2020,47(12).
APA	Kwok R.,Cunningham G.F.,Kacimi S.,Webster M.A.,Kurtz N.T.,&Petty A.A..(2020).Decay of the Snow Cover Over Arctic Sea Ice From ICESat-2 Acquisitions During Summer Melt in 2019.Geophysical Research Letters,47(12).
MLA	Kwok R.,et al."Decay of the Snow Cover Over Arctic Sea Ice From ICESat-2 Acquisitions During Summer Melt in 2019".Geophysical Research Letters 47.12(2020).