气候变化领域集成服务门户(CCPortal): Greenland iceberg melt variability from high-resolution satellite observations

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DOI	10.5194/tc-12-565-2018
	Greenland iceberg melt variability from high-resolution satellite observations
	Enderlin E.M.; Carrigan C.J.; Kochtitzky W.H.; Cuadros A.; Moon T.; Hamilton G.S.
发表日期	2018
ISSN	19940416
卷号	12 期号:2
英文摘要	Iceberg discharge from the Greenland Ice Sheet accounts for up to half of the freshwater flux to surrounding fjords and ocean basins, yet the spatial distribution of iceberg meltwater fluxes is poorly understood. One of the primary limitations for mapping iceberg meltwater fluxes, and changes over time, is the dearth of iceberg submarine melt rate estimates. Here we use a remote sensing approach to estimate submarine melt rates during 2011-2016 for 637 icebergs discharged from seven marine-terminating glaciers fringing the Greenland Ice Sheet. We find that spatial variations in iceberg melt rates generally follow expected patterns based on hydrographic observations, including a decrease in melt rate with latitude and an increase in melt rate with iceberg draft. However, we find no longitudinal variations in melt rates within individual fjords. We do not resolve coherent seasonal to interannual patterns in melt rates across all study sites, though we attribute a 4-fold melt rate increase from March to April 2011 near Jakobshavn Isbræ to fjord circulation changes induced by the seasonal onset of iceberg calving. Overall, our results suggest that remotely sensed iceberg melt rates can be used to characterize spatial and temporal variations in oceanic forcing near often inaccessible marine-terminating glaciers. © Author(s) 2018.
语种	英语
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/119220
作者单位	Climate Change Institute, University of Maine, Orono, ME 04469, United States; School of Earth and Climate Sciences, University of Maine, Orono, ME 04469, United States; School of Marine Sciences, University of Maine, Orono, ME 04469, United States; National Snow and Ice Data Center, University of Colorado, Boulder, CO 80303, United States
推荐引用方式 GB/T 7714	Enderlin E.M.,Carrigan C.J.,Kochtitzky W.H.,et al. Greenland iceberg melt variability from high-resolution satellite observations[J],2018,12(2).
APA	Enderlin E.M.,Carrigan C.J.,Kochtitzky W.H.,Cuadros A.,Moon T.,&Hamilton G.S..(2018).Greenland iceberg melt variability from high-resolution satellite observations.Cryosphere,12(2).
MLA	Enderlin E.M.,et al."Greenland iceberg melt variability from high-resolution satellite observations".Cryosphere 12.2(2018).