Brief Communication: Upper-air relaxation in RACMO2 significantly improves modelled interannual surface mass balance variability in Antarctica
The Regional Atmospheric Climate Model (RACMO2) has been a powerful tool for improving surface mass balance (SMB) estimates from GCMs or reanalyses. However, new yearly SMB observations for West Antarctica show that the modelled interannual variability in SMB is poorly simulated by RACMO2, in contra...
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2016
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00013938 2023-05-15T13:34:48+02:00 Brief Communication: Upper-air relaxation in RACMO2 significantly improves modelled interannual surface mass balance variability in Antarctica van de Berg, Willem Jan Medley, Brooke 2016-03 electronic https://doi.org/10.5194/tc-10-459-2016 https://noa.gwlb.de/receive/cop_mods_00013938 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013894/tc-10-459-2016.pdf https://tc.copernicus.org/articles/10/459/2016/tc-10-459-2016.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-10-459-2016 https://noa.gwlb.de/receive/cop_mods_00013938 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013894/tc-10-459-2016.pdf https://tc.copernicus.org/articles/10/459/2016/tc-10-459-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/tc-10-459-2016 2022-02-08T22:55:22Z The Regional Atmospheric Climate Model (RACMO2) has been a powerful tool for improving surface mass balance (SMB) estimates from GCMs or reanalyses. However, new yearly SMB observations for West Antarctica show that the modelled interannual variability in SMB is poorly simulated by RACMO2, in contrast to ERA-Interim, which resolves this variability well. In an attempt to remedy RACMO2 performance, we included additional upper-air relaxation (UAR) in RACMO2. With UAR, the correlation to observations is similar for RACMO2 and ERA-Interim. The spatial SMB patterns and ice-sheet-integrated SMB modelled using UAR remain very similar to the estimates of RACMO2 without UAR. We only observe an upstream smoothing of precipitation in regions with very steep topography like the Antarctic Peninsula. We conclude that UAR is a useful improvement for regional climate model simulations, although results in regions with steep topography should be treated with care. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet The Cryosphere West Antarctica Niedersächsisches Online-Archiv NOA Antarctic Antarctic Peninsula The Antarctic West Antarctica The Cryosphere 10 1 459 463 |
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article Verlagsveröffentlichung van de Berg, Willem Jan Medley, Brooke Brief Communication: Upper-air relaxation in RACMO2 significantly improves modelled interannual surface mass balance variability in Antarctica |
topic_facet |
article Verlagsveröffentlichung |
description |
The Regional Atmospheric Climate Model (RACMO2) has been a powerful tool for improving surface mass balance (SMB) estimates from GCMs or reanalyses. However, new yearly SMB observations for West Antarctica show that the modelled interannual variability in SMB is poorly simulated by RACMO2, in contrast to ERA-Interim, which resolves this variability well. In an attempt to remedy RACMO2 performance, we included additional upper-air relaxation (UAR) in RACMO2. With UAR, the correlation to observations is similar for RACMO2 and ERA-Interim. The spatial SMB patterns and ice-sheet-integrated SMB modelled using UAR remain very similar to the estimates of RACMO2 without UAR. We only observe an upstream smoothing of precipitation in regions with very steep topography like the Antarctic Peninsula. We conclude that UAR is a useful improvement for regional climate model simulations, although results in regions with steep topography should be treated with care. |
format |
Article in Journal/Newspaper |
author |
van de Berg, Willem Jan Medley, Brooke |
author_facet |
van de Berg, Willem Jan Medley, Brooke |
author_sort |
van de Berg, Willem Jan |
title |
Brief Communication: Upper-air relaxation in RACMO2 significantly improves modelled interannual surface mass balance variability in Antarctica |
title_short |
Brief Communication: Upper-air relaxation in RACMO2 significantly improves modelled interannual surface mass balance variability in Antarctica |
title_full |
Brief Communication: Upper-air relaxation in RACMO2 significantly improves modelled interannual surface mass balance variability in Antarctica |
title_fullStr |
Brief Communication: Upper-air relaxation in RACMO2 significantly improves modelled interannual surface mass balance variability in Antarctica |
title_full_unstemmed |
Brief Communication: Upper-air relaxation in RACMO2 significantly improves modelled interannual surface mass balance variability in Antarctica |
title_sort |
brief communication: upper-air relaxation in racmo2 significantly improves modelled interannual surface mass balance variability in antarctica |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/tc-10-459-2016 https://noa.gwlb.de/receive/cop_mods_00013938 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013894/tc-10-459-2016.pdf https://tc.copernicus.org/articles/10/459/2016/tc-10-459-2016.pdf |
geographic |
Antarctic Antarctic Peninsula The Antarctic West Antarctica |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic West Antarctica |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet The Cryosphere West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet The Cryosphere West Antarctica |
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-10-459-2016 https://noa.gwlb.de/receive/cop_mods_00013938 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00013894/tc-10-459-2016.pdf https://tc.copernicus.org/articles/10/459/2016/tc-10-459-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-10-459-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
1 |
container_start_page |
459 |
op_container_end_page |
463 |
_version_ |
1766057718057009152 |