Quantifying Antarctic‐Wide Ice‐Shelf Surface Melt Volume Using Microwave and Firn Model Data: 1980 to 2021
Quantifying Antarctic‐Wide Ice‐Shelf Surface Melt Volume Using Microwave and Firn Model Data: 1980 to 2021
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使用微波和冰模型数据量化南极冰架表面融化量:1980 年至 2021 年
DOI:
10.1029/2023gl102744
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发表时间:
2023
影响因子:
5.2
通讯作者:
G. Picard
中科院分区:
文献类型:
--
作者:
A. Banwell;N. Wever;D. Dunmire;G. Picard
Antarctic ice‐shelf stability is threatened by surface melt, which has been implicated in several ice‐shelf collapse events over recent decades. Here, we first analyze cumulative days of wet snow/ice status (“melt days”) for melt seasons from 1980 to 2021 over Antarctica's ice shelves using passive and active microwave satellite observations. As these observations do not directly reveal meltwater volumes, we calculate these using the physics‐based multi‐layer snow model SNOWPACK, driven by the global climate‐reanalysis model Modern‐Era Retrospective analysis for Research and Applications Version 2. We find a strong non‐linear relationship between melt days and meltwater production volume. SNOWPACK's calculation of melt days shows agreement with observations of both cumulative days, and spatial and interannual variability. Highest melt rates are found on the Peninsula ice shelves, particularly in the 1992/1993 and 1994/1995 austral summers. Over all ice shelves, SNOWPACK calculates a small, but significant, decreasing trend in both annual melt days and meltwater production volume over the 41 years.
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影响因子:
18.3
作者:
Adusumilli S;Fricker HA;Medley B;Padman L;Siegfried MR
通讯作者:
Siegfried MR
影响因子:
30.7
作者:
Bell, Robin E.;Banwell, Alison F.;Kingslake, Jonathan
通讯作者:
Kingslake, Jonathan
影响因子:
5.2
作者:
A. Robel;A. Banwell
通讯作者:
A. Robel;A. Banwell
影响因子:
5.2
作者:
Dunmire D;Lenaerts JTM;Banwell AF;Wever N;Shragge J;Lhermitte S;Drews R;Pattyn F;Hansen JSS;Willis IC;Miller J;Keenan E
通讯作者:
Keenan E
DOI:
10.5194/tc-16-5061-2022
发表时间:
2022
期刊:
The Cryosphere
影响因子:
--
作者:
Picard, Ghislain;Leduc-Leballeur, Marion;Banwell, Alison F.;Brucker, Ludovic;Macelloni, Giovanni
通讯作者:
Macelloni, Giovanni