DOI: 10.5194/tc-12-565-2018
Scopus记录号: 2-s2.0-85042326346
论文题名: Greenland iceberg melt variability from high-resolution satellite observations
作者: Enderlin E ; M ; , Carrigan C ; J ; , Kochtitzky W ; H ; , Cuadros A ; , Moon T ; , Hamilton G ; S
刊名: Cryosphere
ISSN: 19940416
出版年: 2018
卷: 12, 期: 2 起始页码: 565
结束页码: 575
语种: 英语
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75419
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Climate Change Institute, University of Maine, Orono, ME, United States; School of Earth and Climate Sciences, University of Maine, Orono, ME, United States; School of Marine Sciences, University of Maine, Orono, ME, United States; National Snow and Ice Data Center, University of Colorado, Boulder, CO, United States
Recommended Citation:
Enderlin E,M,, Carrigan C,et al. Greenland iceberg melt variability from high-resolution satellite observations[J]. Cryosphere,2018-01-01,12(2)