Evaluation of a new snow albedo scheme for the greenland ice sheet in the regional atmospheric climate model (racmo2)
Snow and ice albedo schemes in present-day climate models often lack a sophisticated radiation penetration scheme and do not explicitly include spectral albedo variations. In this study, we evaluate a new snow albedo scheme in the Regional Atmospheric Climate Model (RACMO2) for the Greenland ice she...
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fttudelft:oai:tudelft.nl:uuid:ad4b0b04-6cba-484c-a341-9c4c5163551c 2024-04-28T08:21:12+00:00 Evaluation of a new snow albedo scheme for the greenland ice sheet in the regional atmospheric climate model (racmo2) Van Dalum, Christiaan T. (author) Jan Van De Berg, Willem (author) Lhermitte, S.L.M. (author) Van Den Broeke, Michiel R. (author) 2020 http://resolver.tudelft.nl/uuid:ad4b0b04-6cba-484c-a341-9c4c5163551c https://doi.org/10.5194/tc-14-3645-2020 en eng http://www.scopus.com/inward/record.url?scp=85095847102&partnerID=8YFLogxK The Cryosphere--1994-0416--cd846f1b-e0c2-4859-8c64-145cdcd59512 http://resolver.tudelft.nl/uuid:ad4b0b04-6cba-484c-a341-9c4c5163551c https://doi.org/10.5194/tc-14-3645-2020 © 2020 Christiaan T. Van Dalum, Willem Jan Van De Berg, S.L.M. Lhermitte, Michiel R. Van Den Broeke journal article 2020 fttudelft https://doi.org/10.5194/tc-14-3645-2020 2024-04-10T00:03:45Z Snow and ice albedo schemes in present-day climate models often lack a sophisticated radiation penetration scheme and do not explicitly include spectral albedo variations. In this study, we evaluate a new snow albedo scheme in the Regional Atmospheric Climate Model (RACMO2) for the Greenland ice sheet, version 2.3p3, that includes these processes. The new albedo scheme uses the TwostreAm Radiative TransfEr in Snow (TARTES) model and the Spectral-To-NarrOWBand ALbedo (SNOWBAL) module, version 1.2. Additionally, the bare-ice albedo parameterization has been updated. The snow and ice broadband and narrowband albedo output of the updated version of RACMO2 is evaluated using the Programme for Monitoring of the Greenland Ice Sheet (PROMICE) and Kangerlussuaq transect (K-Transect) in situ data and Moderate Resolution Imaging Spectroradiometer (MODIS) remote-sensing observations. Generally, the modeled narrowband and broadband albedo is in very good agreement with satellite observations, leading to a negligible domain-Averaged broadband albedo bias for the interior. Some discrepancies are, however, observed close to the ice margin. Compared to the previous model version, RACMO2.3p2, the broadband albedo is considerably higher in the bare-ice zone during the ablation season, as atmospheric conditions now alter the bare-ice broadband albedo. For most other regions, however, the updated broadband albedo is lower due to spectral effects, radiation penetration or enhanced snow metamorphism. Mathematical Geodesy and Positioning Article in Journal/Newspaper Greenland Ice Sheet Kangerlussuaq The Cryosphere Delft University of Technology: Institutional Repository The Cryosphere 14 11 3645 3662 |
institution |
Open Polar |
collection |
Delft University of Technology: Institutional Repository |
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fttudelft |
language |
English |
description |
Snow and ice albedo schemes in present-day climate models often lack a sophisticated radiation penetration scheme and do not explicitly include spectral albedo variations. In this study, we evaluate a new snow albedo scheme in the Regional Atmospheric Climate Model (RACMO2) for the Greenland ice sheet, version 2.3p3, that includes these processes. The new albedo scheme uses the TwostreAm Radiative TransfEr in Snow (TARTES) model and the Spectral-To-NarrOWBand ALbedo (SNOWBAL) module, version 1.2. Additionally, the bare-ice albedo parameterization has been updated. The snow and ice broadband and narrowband albedo output of the updated version of RACMO2 is evaluated using the Programme for Monitoring of the Greenland Ice Sheet (PROMICE) and Kangerlussuaq transect (K-Transect) in situ data and Moderate Resolution Imaging Spectroradiometer (MODIS) remote-sensing observations. Generally, the modeled narrowband and broadband albedo is in very good agreement with satellite observations, leading to a negligible domain-Averaged broadband albedo bias for the interior. Some discrepancies are, however, observed close to the ice margin. Compared to the previous model version, RACMO2.3p2, the broadband albedo is considerably higher in the bare-ice zone during the ablation season, as atmospheric conditions now alter the bare-ice broadband albedo. For most other regions, however, the updated broadband albedo is lower due to spectral effects, radiation penetration or enhanced snow metamorphism. Mathematical Geodesy and Positioning |
format |
Article in Journal/Newspaper |
author |
Van Dalum, Christiaan T. (author) Jan Van De Berg, Willem (author) Lhermitte, S.L.M. (author) Van Den Broeke, Michiel R. (author) |
spellingShingle |
Van Dalum, Christiaan T. (author) Jan Van De Berg, Willem (author) Lhermitte, S.L.M. (author) Van Den Broeke, Michiel R. (author) Evaluation of a new snow albedo scheme for the greenland ice sheet in the regional atmospheric climate model (racmo2) |
author_facet |
Van Dalum, Christiaan T. (author) Jan Van De Berg, Willem (author) Lhermitte, S.L.M. (author) Van Den Broeke, Michiel R. (author) |
author_sort |
Van Dalum, Christiaan T. (author) |
title |
Evaluation of a new snow albedo scheme for the greenland ice sheet in the regional atmospheric climate model (racmo2) |
title_short |
Evaluation of a new snow albedo scheme for the greenland ice sheet in the regional atmospheric climate model (racmo2) |
title_full |
Evaluation of a new snow albedo scheme for the greenland ice sheet in the regional atmospheric climate model (racmo2) |
title_fullStr |
Evaluation of a new snow albedo scheme for the greenland ice sheet in the regional atmospheric climate model (racmo2) |
title_full_unstemmed |
Evaluation of a new snow albedo scheme for the greenland ice sheet in the regional atmospheric climate model (racmo2) |
title_sort |
evaluation of a new snow albedo scheme for the greenland ice sheet in the regional atmospheric climate model (racmo2) |
publishDate |
2020 |
url |
http://resolver.tudelft.nl/uuid:ad4b0b04-6cba-484c-a341-9c4c5163551c https://doi.org/10.5194/tc-14-3645-2020 |
genre |
Greenland Ice Sheet Kangerlussuaq The Cryosphere |
genre_facet |
Greenland Ice Sheet Kangerlussuaq The Cryosphere |
op_relation |
http://www.scopus.com/inward/record.url?scp=85095847102&partnerID=8YFLogxK The Cryosphere--1994-0416--cd846f1b-e0c2-4859-8c64-145cdcd59512 http://resolver.tudelft.nl/uuid:ad4b0b04-6cba-484c-a341-9c4c5163551c https://doi.org/10.5194/tc-14-3645-2020 |
op_rights |
© 2020 Christiaan T. Van Dalum, Willem Jan Van De Berg, S.L.M. Lhermitte, Michiel R. Van Den Broeke |
op_doi |
https://doi.org/10.5194/tc-14-3645-2020 |
container_title |
The Cryosphere |
container_volume |
14 |
container_issue |
11 |
container_start_page |
3645 |
op_container_end_page |
3662 |
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1797583684074733568 |