Surface mass balance downscaling through elevation classes in an Earth system model: application to the Greenland ice sheet
The modeling of ice sheets in Earth system models (ESMs) is an active area of research with applications to future sea level rise projections and paleoclimate studies. A major challenge for surface mass balance (SMB) modeling with ESMs arises from their coarse resolution. This paper evaluates the el...
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Copernicus Publications
2019
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00049681 2023-05-15T16:27:17+02:00 Surface mass balance downscaling through elevation classes in an Earth system model: application to the Greenland ice sheet Sellevold, Raymond van Kampenhout, Leonardus Lenaerts, Jan T. M. Noël, Brice Lipscomb, William H. Vizcaino, Miren 2019-12 electronic https://doi.org/10.5194/tc-13-3193-2019 https://noa.gwlb.de/receive/cop_mods_00049681 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049300/tc-13-3193-2019.pdf https://tc.copernicus.org/articles/13/3193/2019/tc-13-3193-2019.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-13-3193-2019 https://noa.gwlb.de/receive/cop_mods_00049681 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049300/tc-13-3193-2019.pdf https://tc.copernicus.org/articles/13/3193/2019/tc-13-3193-2019.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2019 ftnonlinearchiv https://doi.org/10.5194/tc-13-3193-2019 2022-02-08T22:37:13Z The modeling of ice sheets in Earth system models (ESMs) is an active area of research with applications to future sea level rise projections and paleoclimate studies. A major challenge for surface mass balance (SMB) modeling with ESMs arises from their coarse resolution. This paper evaluates the elevation class (EC) method as an SMB downscaling alternative to the dynamical downscaling of regional climate models. To this end, we compare EC-simulated elevation-dependent surface energy and mass balance gradients from the Community Earth System Model 1.0 (CESM1.0) with those from the regional climate model RACMO2.3. The EC implementation in CESM1.0 combines prognostic snow albedo, a multilayer snow model, and elevation corrections for two atmospheric forcing variables: temperature and humidity. Despite making no corrections for incoming radiation and precipitation, we find that the EC method in CESM1.0 yields similar SMB gradients to RACMO2.3, in part due to compensating biases in snowfall, surface melt, and refreezing gradients. We discuss the sensitivity of the results to the lapse rate used for the temperature correction. We also evaluate the impact of the EC method on the climate simulated by the ESM and find minor cooling over the Greenland ice sheet and Barents and Greenland seas, which compensates for a warm bias in the ESM due to topographic smoothing. Based on our diagnostic procedure to evaluate the EC method, we make several recommendations for future implementations. Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere Niedersächsisches Online-Archiv NOA Greenland The Cryosphere 13 12 3193 3208 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Sellevold, Raymond van Kampenhout, Leonardus Lenaerts, Jan T. M. Noël, Brice Lipscomb, William H. Vizcaino, Miren Surface mass balance downscaling through elevation classes in an Earth system model: application to the Greenland ice sheet |
topic_facet |
article Verlagsveröffentlichung |
description |
The modeling of ice sheets in Earth system models (ESMs) is an active area of research with applications to future sea level rise projections and paleoclimate studies. A major challenge for surface mass balance (SMB) modeling with ESMs arises from their coarse resolution. This paper evaluates the elevation class (EC) method as an SMB downscaling alternative to the dynamical downscaling of regional climate models. To this end, we compare EC-simulated elevation-dependent surface energy and mass balance gradients from the Community Earth System Model 1.0 (CESM1.0) with those from the regional climate model RACMO2.3. The EC implementation in CESM1.0 combines prognostic snow albedo, a multilayer snow model, and elevation corrections for two atmospheric forcing variables: temperature and humidity. Despite making no corrections for incoming radiation and precipitation, we find that the EC method in CESM1.0 yields similar SMB gradients to RACMO2.3, in part due to compensating biases in snowfall, surface melt, and refreezing gradients. We discuss the sensitivity of the results to the lapse rate used for the temperature correction. We also evaluate the impact of the EC method on the climate simulated by the ESM and find minor cooling over the Greenland ice sheet and Barents and Greenland seas, which compensates for a warm bias in the ESM due to topographic smoothing. Based on our diagnostic procedure to evaluate the EC method, we make several recommendations for future implementations. |
format |
Article in Journal/Newspaper |
author |
Sellevold, Raymond van Kampenhout, Leonardus Lenaerts, Jan T. M. Noël, Brice Lipscomb, William H. Vizcaino, Miren |
author_facet |
Sellevold, Raymond van Kampenhout, Leonardus Lenaerts, Jan T. M. Noël, Brice Lipscomb, William H. Vizcaino, Miren |
author_sort |
Sellevold, Raymond |
title |
Surface mass balance downscaling through elevation classes in an Earth system model: application to the Greenland ice sheet |
title_short |
Surface mass balance downscaling through elevation classes in an Earth system model: application to the Greenland ice sheet |
title_full |
Surface mass balance downscaling through elevation classes in an Earth system model: application to the Greenland ice sheet |
title_fullStr |
Surface mass balance downscaling through elevation classes in an Earth system model: application to the Greenland ice sheet |
title_full_unstemmed |
Surface mass balance downscaling through elevation classes in an Earth system model: application to the Greenland ice sheet |
title_sort |
surface mass balance downscaling through elevation classes in an earth system model: application to the greenland ice sheet |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/tc-13-3193-2019 https://noa.gwlb.de/receive/cop_mods_00049681 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049300/tc-13-3193-2019.pdf https://tc.copernicus.org/articles/13/3193/2019/tc-13-3193-2019.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-13-3193-2019 https://noa.gwlb.de/receive/cop_mods_00049681 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049300/tc-13-3193-2019.pdf https://tc.copernicus.org/articles/13/3193/2019/tc-13-3193-2019.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-13-3193-2019 |
container_title |
The Cryosphere |
container_volume |
13 |
container_issue |
12 |
container_start_page |
3193 |
op_container_end_page |
3208 |
_version_ |
1766016419291463680 |