Brief communication: Surface energy balance differences over Greenland between ERA5 and ERA-Interim
We compare the main atmospheric drivers of the melt season over the Greenland Ice Sheet (GrIS) in ERA5 and ERA-Interim (ERAI) in their overlapping period 1979–2018. In summer, ERA5 differs significantly from ERAI, especially in the melt regions: averaged over the lower parts of the GrIS, mean near-s...
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Online Access: | https://doi.org/10.5194/egusphere-2023-525 https://noa.gwlb.de/receive/cop_mods_00065579 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00064096/egusphere-2023-525.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-525/egusphere-2023-525.pdf |
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00065579 2023-05-15T16:27:03+02:00 Brief communication: Surface energy balance differences over Greenland between ERA5 and ERA-Interim Krebs-Kanzow, Uta Rodehacke, Christian B. Lohmann, Gerrit 2023-03 electronic https://doi.org/10.5194/egusphere-2023-525 https://noa.gwlb.de/receive/cop_mods_00065579 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00064096/egusphere-2023-525.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-525/egusphere-2023-525.pdf eng eng Copernicus Publications https://doi.org/10.5194/egusphere-2023-525 https://noa.gwlb.de/receive/cop_mods_00065579 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00064096/egusphere-2023-525.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-525/egusphere-2023-525.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/egusphere-2023-525 2023-03-26T23:15:38Z We compare the main atmospheric drivers of the melt season over the Greenland Ice Sheet (GrIS) in ERA5 and ERA-Interim (ERAI) in their overlapping period 1979–2018. In summer, ERA5 differs significantly from ERAI, especially in the melt regions: averaged over the lower parts of the GrIS, mean near-surface temperature is 1 K lower, while the mean downward shortwave radiation at the surface is on average 15 Wm−2 higher than in ERAI. Comparison with observational weather station data shows a significant warm bias in ERAI and for ERA5 a significant positive bias in downward shortwave radiation. Consequently, methods that previously estimated the GrIS surface mass balance from the ERAI surface energy balance need to be carefully recalibrated before converting to ERA5 forcing. Article in Journal/Newspaper Greenland Ice Sheet Niedersächsisches Online-Archiv NOA Greenland |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Krebs-Kanzow, Uta Rodehacke, Christian B. Lohmann, Gerrit Brief communication: Surface energy balance differences over Greenland between ERA5 and ERA-Interim |
topic_facet |
article Verlagsveröffentlichung |
description |
We compare the main atmospheric drivers of the melt season over the Greenland Ice Sheet (GrIS) in ERA5 and ERA-Interim (ERAI) in their overlapping period 1979–2018. In summer, ERA5 differs significantly from ERAI, especially in the melt regions: averaged over the lower parts of the GrIS, mean near-surface temperature is 1 K lower, while the mean downward shortwave radiation at the surface is on average 15 Wm−2 higher than in ERAI. Comparison with observational weather station data shows a significant warm bias in ERAI and for ERA5 a significant positive bias in downward shortwave radiation. Consequently, methods that previously estimated the GrIS surface mass balance from the ERAI surface energy balance need to be carefully recalibrated before converting to ERA5 forcing. |
format |
Article in Journal/Newspaper |
author |
Krebs-Kanzow, Uta Rodehacke, Christian B. Lohmann, Gerrit |
author_facet |
Krebs-Kanzow, Uta Rodehacke, Christian B. Lohmann, Gerrit |
author_sort |
Krebs-Kanzow, Uta |
title |
Brief communication: Surface energy balance differences over Greenland between ERA5 and ERA-Interim |
title_short |
Brief communication: Surface energy balance differences over Greenland between ERA5 and ERA-Interim |
title_full |
Brief communication: Surface energy balance differences over Greenland between ERA5 and ERA-Interim |
title_fullStr |
Brief communication: Surface energy balance differences over Greenland between ERA5 and ERA-Interim |
title_full_unstemmed |
Brief communication: Surface energy balance differences over Greenland between ERA5 and ERA-Interim |
title_sort |
brief communication: surface energy balance differences over greenland between era5 and era-interim |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/egusphere-2023-525 https://noa.gwlb.de/receive/cop_mods_00065579 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00064096/egusphere-2023-525.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-525/egusphere-2023-525.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
https://doi.org/10.5194/egusphere-2023-525 https://noa.gwlb.de/receive/cop_mods_00065579 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00064096/egusphere-2023-525.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-525/egusphere-2023-525.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/egusphere-2023-525 |
_version_ |
1766016100909187072 |