气候变化领域集成服务门户(CCPortal): Measuring Greenland Ice Sheet Melt Using Spaceborne GNSS Reflectometry From TechDemoSat-1

CCPortal

DOI	10.1029/2019GL086477
	Measuring Greenland Ice Sheet Melt Using Spaceborne GNSS Reflectometry From TechDemoSat-1
	Li W.; Cardellach E.; Fabra F.; Ribó S.; Rius A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:2
英文摘要	The capability of spaceborne Global Navigation Satellite System-reflectometry (GNSS-R) for Greenland ice sheet melt detection is investigated using the TechDemoSat-1 satellite (TDS-1) data. The melt detection is based on the sensitivity of GNSS-R signal to the presence of liquid water in snow pack. Statistical analysis during the 2018 melt season shows melt detection using GNSS-R is possible with an agreement of 90% comparing to the microwave radiometer (MWR) data. In 37% of the cases GNSS-R detects melting when MWR does not. The inconsistency observed between GNSS-R and MWR is mainly due to the different features of the two observation concepts and the limitations of currently available GNSS-R data. Furthermore, the large penetration depth of the GNSS signal can potentially provide complementary information on melt occurrence in ice sheet subsurface. These results show the potential of future GNSS-R missions for ice sheet melt detection. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Communication satellites; Glaciers; Ice; Melting; Microwave devices; Radar; Reflection; Reflectometers; Salinity measurement; Satellites; Bistatic radars; Global Navigation Satellite Systems; Greenland Ice Sheet; Large penetrations; Liquid water; Melt detection; Microwave radiometers; Reflectometry; Global positioning system; detection method; GNSS; ice sheet; microwave radiometer; radar; satellite data; 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/170827
作者单位	Earth Observation Research Group, Institute of Space Sciences (ICE, CSIC), Barcelona, Spain; Institut d'Estudis Espacials de Catalunya (IEEC), Barcelona, Spain
推荐引用方式 GB/T 7714	Li W.,Cardellach E.,Fabra F.,et al. Measuring Greenland Ice Sheet Melt Using Spaceborne GNSS Reflectometry From TechDemoSat-1[J],2020,47(2).
APA	Li W.,Cardellach E.,Fabra F.,Ribó S.,&Rius A..(2020).Measuring Greenland Ice Sheet Melt Using Spaceborne GNSS Reflectometry From TechDemoSat-1.Geophysical Research Letters,47(2).
MLA	Li W.,et al."Measuring Greenland Ice Sheet Melt Using Spaceborne GNSS Reflectometry From TechDemoSat-1".Geophysical Research Letters 47.2(2020).