气候变化领域集成服务门户(CCPortal): Detection of Melt Ponds on Arctic Summer Sea Ice From ICESat-2

CCPortal

DOI	10.1029/2020GL090644
	Detection of Melt Ponds on Arctic Summer Sea Ice From ICESat-2
	Tilling R.; Kurtz N.T.; Bagnardi M.; Petty A.A.; Kwok R.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:23
英文摘要	Hemisphere-wide observations of melt ponds on sea ice are needed to understand their influence on the surface radiation budget of the Arctic Ocean and to extend the satellite sea ice thickness data record. Here we present a first assessment of NASA's Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) over individual Arctic sea ice melt ponds with different reflective properties. We use coincident high-resolution satellite imagery from WorldView-2 and Sentinel-2 over different sea ice topographies to show that smooth ponds are highly reflective and can saturate the ICESat-2 photon detection system. Rougher ponds have a more varied backscatter signal, and in some cases both the water and underlying ice surfaces are visible in photon height distributions. Characterizing the complex photon backscatter signals of melt ponds on sea ice is a first step toward automating retrievals of pond parameters such as width, melt pond fraction and depth, and improving higher-level ICESat-2 sea ice height and freeboard products. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Backscattering; Budget control; NASA; Photons; Ponds; Satellite imagery; Sea ice; Backscatter signals; Height distribution; High resolution satellite imagery; Highly reflective; Land elevation satellites; Reflective properties; Sea-ice thickness; Surface radiation budget; Lakes; backscatter; ice thickness; ICESat; melting; radiation budget; sea ice; summer; WorldView; Arctic Ocean
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/169370
作者单位	NASA Goddard Space Flight Center, Greenbelt, MD, United States; Earth System Interdisciplinary Center, University of Maryland, College Park, MD, United States; ADNET Systems, Inc., Bethesda, MD, United States; Applied Physics Laboratory, University of Washington, Seattle, WA, United States
推荐引用方式 GB/T 7714	Tilling R.,Kurtz N.T.,Bagnardi M.,et al. Detection of Melt Ponds on Arctic Summer Sea Ice From ICESat-2[J],2020,47(23).
APA	Tilling R.,Kurtz N.T.,Bagnardi M.,Petty A.A.,&Kwok R..(2020).Detection of Melt Ponds on Arctic Summer Sea Ice From ICESat-2.Geophysical Research Letters,47(23).
MLA	Tilling R.,et al."Detection of Melt Ponds on Arctic Summer Sea Ice From ICESat-2".Geophysical Research Letters 47.23(2020).