Climate of the Greenland ice sheet using a high-resolution climate model - Part 1: Evaluation
A simulation of 51 years (1957-2008) has been performed over Greenland using the regional atmospheric climate model (RACMO2/GR) at a horizontal grid spacing of 11 km and forced by ECMWF re-analysis products. To better represent processes affecting ice sheet surface mass balance, such as meltwater re...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/202863 2023-11-12T04:08:40+01:00 Climate of the Greenland ice sheet using a high-resolution climate model - Part 1: Evaluation Ettema, J. van den Broeke, M. R. van Meijgaard, E. van de Berg, W. J. Box, J. E. Steffen, K. Sub Dynamics Meteorology 2010 image/pdf https://dspace.library.uu.nl/handle/1874/202863 en eng 1994-0416 https://dspace.library.uu.nl/handle/1874/202863 info:eu-repo/semantics/OpenAccess Weather station data Mass-balance West greenland Transfer-coefficients Antarctica Wind Temperature Reanalysis Roughness Runoff Article 2010 ftunivutrecht 2023-11-01T23:11:47Z A simulation of 51 years (1957-2008) has been performed over Greenland using the regional atmospheric climate model (RACMO2/GR) at a horizontal grid spacing of 11 km and forced by ECMWF re-analysis products. To better represent processes affecting ice sheet surface mass balance, such as meltwater refreezing and penetration, an additional snow/ice surface module has been developed and implemented into the surface part of the climate model. The temporal evolution and climatology of the model is evaluated with in situ coastal and ice sheet atmospheric measurements of near-surface variables and surface energy balance components. The bias for the near-surface air temperature (-0.8 degrees C), specific humidity (0.1 g kg(-1)), wind speed (0.3 ms(-1)) as well as for radiative (2.5 Wm(-2) for net radiation) and turbulent heat fluxes shows that the model is in good accordance with available observations on and around the ice sheet. The modelled surface energy budget underestimates the downward longwave radiation and overestimates the sensible heat flux. Due to their compensating effect, the averaged 2m temperature bias is small and the katabatic wind circulation well captured by the model. Article in Journal/Newspaper Antarc* Antarctica Greenland Ice Sheet Utrecht University Repository Greenland |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
Weather station data Mass-balance West greenland Transfer-coefficients Antarctica Wind Temperature Reanalysis Roughness Runoff |
spellingShingle |
Weather station data Mass-balance West greenland Transfer-coefficients Antarctica Wind Temperature Reanalysis Roughness Runoff Ettema, J. van den Broeke, M. R. van Meijgaard, E. van de Berg, W. J. Box, J. E. Steffen, K. Climate of the Greenland ice sheet using a high-resolution climate model - Part 1: Evaluation |
topic_facet |
Weather station data Mass-balance West greenland Transfer-coefficients Antarctica Wind Temperature Reanalysis Roughness Runoff |
description |
A simulation of 51 years (1957-2008) has been performed over Greenland using the regional atmospheric climate model (RACMO2/GR) at a horizontal grid spacing of 11 km and forced by ECMWF re-analysis products. To better represent processes affecting ice sheet surface mass balance, such as meltwater refreezing and penetration, an additional snow/ice surface module has been developed and implemented into the surface part of the climate model. The temporal evolution and climatology of the model is evaluated with in situ coastal and ice sheet atmospheric measurements of near-surface variables and surface energy balance components. The bias for the near-surface air temperature (-0.8 degrees C), specific humidity (0.1 g kg(-1)), wind speed (0.3 ms(-1)) as well as for radiative (2.5 Wm(-2) for net radiation) and turbulent heat fluxes shows that the model is in good accordance with available observations on and around the ice sheet. The modelled surface energy budget underestimates the downward longwave radiation and overestimates the sensible heat flux. Due to their compensating effect, the averaged 2m temperature bias is small and the katabatic wind circulation well captured by the model. |
author2 |
Sub Dynamics Meteorology |
format |
Article in Journal/Newspaper |
author |
Ettema, J. van den Broeke, M. R. van Meijgaard, E. van de Berg, W. J. Box, J. E. Steffen, K. |
author_facet |
Ettema, J. van den Broeke, M. R. van Meijgaard, E. van de Berg, W. J. Box, J. E. Steffen, K. |
author_sort |
Ettema, J. |
title |
Climate of the Greenland ice sheet using a high-resolution climate model - Part 1: Evaluation |
title_short |
Climate of the Greenland ice sheet using a high-resolution climate model - Part 1: Evaluation |
title_full |
Climate of the Greenland ice sheet using a high-resolution climate model - Part 1: Evaluation |
title_fullStr |
Climate of the Greenland ice sheet using a high-resolution climate model - Part 1: Evaluation |
title_full_unstemmed |
Climate of the Greenland ice sheet using a high-resolution climate model - Part 1: Evaluation |
title_sort |
climate of the greenland ice sheet using a high-resolution climate model - part 1: evaluation |
publishDate |
2010 |
url |
https://dspace.library.uu.nl/handle/1874/202863 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Antarc* Antarctica Greenland Ice Sheet |
genre_facet |
Antarc* Antarctica Greenland Ice Sheet |
op_relation |
1994-0416 https://dspace.library.uu.nl/handle/1874/202863 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782328892406628352 |