Present-Day Greenland Ice Sheet Climate and Surface Mass Balance in CESM2
The response of the Greenland Ice Sheet (GrIS) to a warmer climate is uncertain on long time scales. Climate models, such as those participating in the Coupled Model Intercomparison Project phase 6 (CMIP6), are used to assess this uncertainty. The Community Earth System Model version 2.1 (CESM2) is...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/395879 2023-11-12T04:17:50+01:00 Present-Day Greenland Ice Sheet Climate and Surface Mass Balance in CESM2 van Kampenhout, Leonardus Lenaerts, Jan T.M. Lipscomb, William H. Lhermitte, Stef Noël, Brice Vizcaíno, Miren Sacks, William J. van den Broeke, Michiel R. Sub Dynamics Meteorology Marine and Atmospheric Research 2020-02 image/pdf https://dspace.library.uu.nl/handle/1874/395879 en eng 2169-9003 https://dspace.library.uu.nl/handle/1874/395879 info:eu-repo/semantics/OpenAccess CESM2 ESM GCM Greenland ice sheets surface mass balance Geophysics Forestry Oceanography Aquatic Science Ecology Water Science and Technology Soil Science Geochemistry and Petrology Earth-Surface Processes Atmospheric Science Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Palaeontology Article 2020 ftunivutrecht 2023-11-01T23:23:15Z The response of the Greenland Ice Sheet (GrIS) to a warmer climate is uncertain on long time scales. Climate models, such as those participating in the Coupled Model Intercomparison Project phase 6 (CMIP6), are used to assess this uncertainty. The Community Earth System Model version 2.1 (CESM2) is a CMIP6 model capable of running climate simulations with either one-way coupling (fixed ice sheet geometry) or two-way coupling (dynamic geometry) to the GrIS. The model features prognostic snow albedo, online downscaling using elevation classes, and a firn pack to refreeze percolating melt water. Here we evaluate the representation of the GrIS surface energy balance and surface mass balance in CESM2 at 1° resolution with fixed GrIS geometry. CESM2 agrees closely with ERA-Interim reanalysis data for key controls on GrIS SMB: surface pressure, sea ice extent, 500 hPa geopotential height, wind speed, and 700 hPa air temperature. Cloudsat-CALIPSO data show that supercooled liquid-containing clouds are adequately represented, whereas comparisons to Moderate Resolution Imaging Spectroradiometer and CM SAF Cloud, Albedo, and Surface Radiation data set from Advanced Very High Resolution Radiometer data second edition data suggest that CESM2 underestimates surface albedo. The seasonal cycle and spatial patterns of surface energy balance and surface mass balance components in CESM2 agree well with regional climate model RACMO2.3p2, with GrIS-integrated melt, refreezing, and runoff bracketed by RACMO2 counterparts at 11 and 1 km. Time series of melt, runoff, and SMB show a break point around 1990, similar to RACMO2. These results suggest that GrIS SMB is realistic in CESM2, which adds confidence to coupled ice sheet-climate experiments that aim to assess the GrIS contribution to future sea level rise. Article in Journal/Newspaper Greenland Ice Sheet Sea ice Utrecht University Repository Greenland |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
CESM2 ESM GCM Greenland ice sheets surface mass balance Geophysics Forestry Oceanography Aquatic Science Ecology Water Science and Technology Soil Science Geochemistry and Petrology Earth-Surface Processes Atmospheric Science Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Palaeontology |
spellingShingle |
CESM2 ESM GCM Greenland ice sheets surface mass balance Geophysics Forestry Oceanography Aquatic Science Ecology Water Science and Technology Soil Science Geochemistry and Petrology Earth-Surface Processes Atmospheric Science Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Palaeontology van Kampenhout, Leonardus Lenaerts, Jan T.M. Lipscomb, William H. Lhermitte, Stef Noël, Brice Vizcaíno, Miren Sacks, William J. van den Broeke, Michiel R. Present-Day Greenland Ice Sheet Climate and Surface Mass Balance in CESM2 |
topic_facet |
CESM2 ESM GCM Greenland ice sheets surface mass balance Geophysics Forestry Oceanography Aquatic Science Ecology Water Science and Technology Soil Science Geochemistry and Petrology Earth-Surface Processes Atmospheric Science Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Palaeontology |
description |
The response of the Greenland Ice Sheet (GrIS) to a warmer climate is uncertain on long time scales. Climate models, such as those participating in the Coupled Model Intercomparison Project phase 6 (CMIP6), are used to assess this uncertainty. The Community Earth System Model version 2.1 (CESM2) is a CMIP6 model capable of running climate simulations with either one-way coupling (fixed ice sheet geometry) or two-way coupling (dynamic geometry) to the GrIS. The model features prognostic snow albedo, online downscaling using elevation classes, and a firn pack to refreeze percolating melt water. Here we evaluate the representation of the GrIS surface energy balance and surface mass balance in CESM2 at 1° resolution with fixed GrIS geometry. CESM2 agrees closely with ERA-Interim reanalysis data for key controls on GrIS SMB: surface pressure, sea ice extent, 500 hPa geopotential height, wind speed, and 700 hPa air temperature. Cloudsat-CALIPSO data show that supercooled liquid-containing clouds are adequately represented, whereas comparisons to Moderate Resolution Imaging Spectroradiometer and CM SAF Cloud, Albedo, and Surface Radiation data set from Advanced Very High Resolution Radiometer data second edition data suggest that CESM2 underestimates surface albedo. The seasonal cycle and spatial patterns of surface energy balance and surface mass balance components in CESM2 agree well with regional climate model RACMO2.3p2, with GrIS-integrated melt, refreezing, and runoff bracketed by RACMO2 counterparts at 11 and 1 km. Time series of melt, runoff, and SMB show a break point around 1990, similar to RACMO2. These results suggest that GrIS SMB is realistic in CESM2, which adds confidence to coupled ice sheet-climate experiments that aim to assess the GrIS contribution to future sea level rise. |
author2 |
Sub Dynamics Meteorology Marine and Atmospheric Research |
format |
Article in Journal/Newspaper |
author |
van Kampenhout, Leonardus Lenaerts, Jan T.M. Lipscomb, William H. Lhermitte, Stef Noël, Brice Vizcaíno, Miren Sacks, William J. van den Broeke, Michiel R. |
author_facet |
van Kampenhout, Leonardus Lenaerts, Jan T.M. Lipscomb, William H. Lhermitte, Stef Noël, Brice Vizcaíno, Miren Sacks, William J. van den Broeke, Michiel R. |
author_sort |
van Kampenhout, Leonardus |
title |
Present-Day Greenland Ice Sheet Climate and Surface Mass Balance in CESM2 |
title_short |
Present-Day Greenland Ice Sheet Climate and Surface Mass Balance in CESM2 |
title_full |
Present-Day Greenland Ice Sheet Climate and Surface Mass Balance in CESM2 |
title_fullStr |
Present-Day Greenland Ice Sheet Climate and Surface Mass Balance in CESM2 |
title_full_unstemmed |
Present-Day Greenland Ice Sheet Climate and Surface Mass Balance in CESM2 |
title_sort |
present-day greenland ice sheet climate and surface mass balance in cesm2 |
publishDate |
2020 |
url |
https://dspace.library.uu.nl/handle/1874/395879 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet Sea ice |
genre_facet |
Greenland Ice Sheet Sea ice |
op_relation |
2169-9003 https://dspace.library.uu.nl/handle/1874/395879 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782334611821428736 |