A daily, 1 km resolution data set of downscaled Greenland ice sheet surface mass balance (1958–2015)
This study presents a data set of daily, 1 km resolution Greenland ice sheet (GrIS) surface mass balance (SMB) covering the period 1958–2015. Applying corrections for elevation, bare ice albedo and accumulation bias, the high-resolution product is statistically downscaled from the native daily outpu...
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ftcopernicus:oai:publications.copernicus.org:tc52128 2023-05-15T16:26:31+02:00 A daily, 1 km resolution data set of downscaled Greenland ice sheet surface mass balance (1958–2015) Noël, Brice Berg, Willem Jan Machguth, Horst Lhermitte, Stef Howat, Ian Fettweis, Xavier Broeke, Michiel R. 2018-09-27 application/pdf https://doi.org/10.5194/tc-10-2361-2016 https://tc.copernicus.org/articles/10/2361/2016/ eng eng doi:10.5194/tc-10-2361-2016 https://tc.copernicus.org/articles/10/2361/2016/ eISSN: 1994-0424 Text 2018 ftcopernicus https://doi.org/10.5194/tc-10-2361-2016 2020-07-20T16:23:58Z This study presents a data set of daily, 1 km resolution Greenland ice sheet (GrIS) surface mass balance (SMB) covering the period 1958–2015. Applying corrections for elevation, bare ice albedo and accumulation bias, the high-resolution product is statistically downscaled from the native daily output of the polar regional climate model RACMO2.3 at 11 km. The data set includes all individual SMB components projected to a down-sampled version of the Greenland Ice Mapping Project (GIMP) digital elevation model and ice mask. The 1 km mask better resolves narrow ablation zones, valley glaciers, fjords and disconnected ice caps. Relative to the 11 km product, the more detailed representation of isolated glaciated areas leads to increased precipitation over the southeastern GrIS. In addition, the downscaled product shows a significant increase in runoff owing to better resolved low-lying marginal glaciated regions. The combined corrections for elevation and bare ice albedo markedly improve model agreement with a newly compiled data set of ablation measurements. Text Greenland Ice Sheet Copernicus Publications: E-Journals Greenland The Cryosphere 10 5 2361 2377 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
This study presents a data set of daily, 1 km resolution Greenland ice sheet (GrIS) surface mass balance (SMB) covering the period 1958–2015. Applying corrections for elevation, bare ice albedo and accumulation bias, the high-resolution product is statistically downscaled from the native daily output of the polar regional climate model RACMO2.3 at 11 km. The data set includes all individual SMB components projected to a down-sampled version of the Greenland Ice Mapping Project (GIMP) digital elevation model and ice mask. The 1 km mask better resolves narrow ablation zones, valley glaciers, fjords and disconnected ice caps. Relative to the 11 km product, the more detailed representation of isolated glaciated areas leads to increased precipitation over the southeastern GrIS. In addition, the downscaled product shows a significant increase in runoff owing to better resolved low-lying marginal glaciated regions. The combined corrections for elevation and bare ice albedo markedly improve model agreement with a newly compiled data set of ablation measurements. |
format |
Text |
author |
Noël, Brice Berg, Willem Jan Machguth, Horst Lhermitte, Stef Howat, Ian Fettweis, Xavier Broeke, Michiel R. |
spellingShingle |
Noël, Brice Berg, Willem Jan Machguth, Horst Lhermitte, Stef Howat, Ian Fettweis, Xavier Broeke, Michiel R. A daily, 1 km resolution data set of downscaled Greenland ice sheet surface mass balance (1958–2015) |
author_facet |
Noël, Brice Berg, Willem Jan Machguth, Horst Lhermitte, Stef Howat, Ian Fettweis, Xavier Broeke, Michiel R. |
author_sort |
Noël, Brice |
title |
A daily, 1 km resolution data set of downscaled Greenland ice sheet surface mass balance (1958–2015) |
title_short |
A daily, 1 km resolution data set of downscaled Greenland ice sheet surface mass balance (1958–2015) |
title_full |
A daily, 1 km resolution data set of downscaled Greenland ice sheet surface mass balance (1958–2015) |
title_fullStr |
A daily, 1 km resolution data set of downscaled Greenland ice sheet surface mass balance (1958–2015) |
title_full_unstemmed |
A daily, 1 km resolution data set of downscaled Greenland ice sheet surface mass balance (1958–2015) |
title_sort |
daily, 1 km resolution data set of downscaled greenland ice sheet surface mass balance (1958–2015) |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-10-2361-2016 https://tc.copernicus.org/articles/10/2361/2016/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-10-2361-2016 https://tc.copernicus.org/articles/10/2361/2016/ |
op_doi |
https://doi.org/10.5194/tc-10-2361-2016 |
container_title |
The Cryosphere |
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10 |
container_issue |
5 |
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2361 |
op_container_end_page |
2377 |
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1766015442234638336 |