Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL090550 |
ICESat‐2 melt depth retrievals: application to surface melt on Amery Ice Shelf, East Antarctica | |
Helen Amanda Fricker; Philipp Arndt; Kelly M. Brunt; Rajashree Tri Datta; Zachary Fair; Michael F. Jasinski; Jonathan Kingslake; Lori A. Magruder; Mahsa Moussavi; Allen Pope; Julian J. Spergel; Jeremy D. Stoll; Bert Wouters | |
2020-12-11 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | Surface melting occurs during summer on the Antarctic and Greenland ice sheets, but the volume of meltwater stored has been difficult to quantify due to a lack of accurate depth estimates. NASA's ICESat‐2 laser altimeter brings a new capability: photons penetrate water and are reflected from both the water and the underlying ice; the difference provides a depth estimate. ICESat‐2 sampled Amery Ice Shelf on 2 January 2019 and showed double returns from surface depressions, indicating meltwater. For four melt features, we compared depth estimates from eight algorithms: six based on ICESat‐2 and two from coincident Landsat‐8 and Sentinel‐2 imagery. All algorithms successfully identified surface water at the same locations. Algorithms based on ICESat‐2 produced the most accurate depths; the image‐based algorithms underestimated depths (by 30‐70%). This implies that ICESat‐2 depths can be used to tune image‐based algorithms, moving us closer to quantifying stored meltwater volumes across Antarctica and Greenland. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/308212 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Helen Amanda Fricker,Philipp Arndt,Kelly M. Brunt,等. ICESat‐2 melt depth retrievals: application to surface melt on Amery Ice Shelf, East Antarctica[J]. Geophysical Research Letters,2020. |
APA | Helen Amanda Fricker.,Philipp Arndt.,Kelly M. Brunt.,Rajashree Tri Datta.,Zachary Fair.,...&Bert Wouters.(2020).ICESat‐2 melt depth retrievals: application to surface melt on Amery Ice Shelf, East Antarctica.Geophysical Research Letters. |
MLA | Helen Amanda Fricker,et al."ICESat‐2 melt depth retrievals: application to surface melt on Amery Ice Shelf, East Antarctica".Geophysical Research Letters (2020). |
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