气候变化领域集成服务门户(CCPortal): Wintertime storage of water in buried supraglacial lakes across the Greenland Ice Sheet

CCPortal

DOI	10.5194/tc-9-1333-2015
	Wintertime storage of water in buried supraglacial lakes across the Greenland Ice Sheet
	Koenig L.S.; Lampkin D.J.; Montgomery L.N.; Hamilton S.L.; Turrin J.B.; Joseph C.A.; Moutsafa S.E.; Panzer B.; Casey K.A.; Paden J.D.; Leuschen C.; Gogineni P.
发表日期	2015
ISSN	19940416
卷号	9 期号:4
英文摘要	Increased surface melt over the Greenland Ice Sheet (GrIS) is now estimated to account for half or more of the ice sheet's total mass loss. Here, we show that some meltwater is stored, over winter, in buried supraglacial lakes. We use airborne radar from Operation IceBridge between 2009 and 2012 to detect buried supraglacial lakes, and we find that they were distributed extensively around the GrIS margin through that period. Buried supraglacial lakes can persist through multiple winters and are, on average, ∼ 1.9 + 0.2m below the surface. Most buried supraglacial lakes exist with no surface expression of their occurrence in visible imagery. The few buried supraglacial lakes that do exhibit surface expression have a unique visible signature associated with a darker blue color where subsurface water is located. The volume of retained water in the buried supraglacial lakes is likely insignificant compared to the total mass loss from the GrIS, but the water may have important implications locally for the development of the englacial hydrologic system and ice temperatures. Buried supraglacial lakes represent a small but year-round source of meltwater in the GrIS hydrologic system. © Author(s) 2015.
学科领域	airborne sensing; color; glacial lake; ice sheet; meltwater; radar; water storage; winter; Arctic; Greenland; Greenland Ice Sheet
语种	英语
scopus关键词	airborne sensing; color; glacial lake; ice sheet; meltwater; radar; water storage; winter; Arctic; Greenland; Greenland Ice Sheet
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119858
作者单位	Cryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Department of Atmospheric and Oceanic Sciences, University of Maryland, College Park, MD, United States; Bowdoin College, Brunswick, ME, United States; Department of Geography, University of Utah, Salt Lake City, UT, United States; Department of Geography, Rutgers, State University of New Jersey, Piscataway, NJ, United States; Center for Remote Sensing of Ice Sheets, University of Kansas, Lawrence, KS, United States; Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States; National Snow and Ice Data Center, University of Colorado, Boulder, CO, United States
推荐引用方式 GB/T 7714	Koenig L.S.,Lampkin D.J.,Montgomery L.N.,et al. Wintertime storage of water in buried supraglacial lakes across the Greenland Ice Sheet[J],2015,9(4).
APA	Koenig L.S..,Lampkin D.J..,Montgomery L.N..,Hamilton S.L..,Turrin J.B..,...&Gogineni P..(2015).Wintertime storage of water in buried supraglacial lakes across the Greenland Ice Sheet.Cryosphere,9(4).
MLA	Koenig L.S.,et al."Wintertime storage of water in buried supraglacial lakes across the Greenland Ice Sheet".Cryosphere 9.4(2015).