Modelling the climate and surface mass balance of polar ice sheets using RACMO2: Part 2: Antarctica (1979-2016)
We evaluate modelled Antarctic ice sheet (AIS) near-surface climate, surface mass balance (SMB) and surface energy balance (SEB) from the updated polar version of the regional atmospheric climate model, RACMO2 (1979-2016). The updated model, referred to as RACMO2.3p2, incorporates upper-air relaxati...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/364458 2023-11-12T04:02:51+01:00 Modelling the climate and surface mass balance of polar ice sheets using RACMO2: Part 2: Antarctica (1979-2016) van Wessem, J.M. Jan Van De Berg, Willem Noël, Brice P.Y. van Meijgaard, Erik Amory, Charles Birnbaum, Gerit Jakobs, Constantijn L. Krüger, Konstantin Lenaerts, Jan T.M. Lhermitte, Stef Ligtenberg, Stefan R.M. Medley, Brooke Reijmer, Carleen H. Van Tricht, Kristof Trusel, Luke D. van Ulft, Lambertus H. Wouters, Bert Wuite, Jan Van Den Broeke, Michiel R. Sub Dynamics Meteorology Marine and Atmospheric Research 2018-04-20 image/pdf https://dspace.library.uu.nl/handle/1874/364458 en eng 1994-0416 https://dspace.library.uu.nl/handle/1874/364458 info:eu-repo/semantics/OpenAccess Water Science and Technology Earth-Surface Processes Article 2018 ftunivutrecht 2023-11-01T23:17:07Z We evaluate modelled Antarctic ice sheet (AIS) near-surface climate, surface mass balance (SMB) and surface energy balance (SEB) from the updated polar version of the regional atmospheric climate model, RACMO2 (1979-2016). The updated model, referred to as RACMO2.3p2, incorporates upper-air relaxation, a revised topography, tuned parameters in the cloud scheme to generate more precipitation towards the AIS interior and modified snow properties reducing drifting snow sublimation and increasing surface snowmelt. Comparisons of RACMO2 model output with several independent observational data show that the existing biases in AIS temperature, radiative fluxes and SMB components are further reduced with respect to the previous model version. The model-integrated annual average SMB for the ice sheet including ice shelves (minus the Antarctic Peninsula, AP) now amounts to 2229ĝ€Gtĝ€yĝ'1, with an interannual variability of 109ĝ€Gtĝ€yĝ'1. The largest improvement is found in modelled surface snowmelt, which now compares well with satellite and weather station observations. For the high-resolution ( ĝ1/4 ĝ€5.5ĝ€km) AP simulation, results remain comparable to earlier studies. The updated model provides a new, high-resolution data set of the contemporary near-surface climate and SMB of the AIS; this model version will be used for future climate scenario projections in a forthcoming study. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet Ice Shelves Utrecht University Repository Antarctic Antarctic Peninsula The Antarctic |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
Water Science and Technology Earth-Surface Processes |
spellingShingle |
Water Science and Technology Earth-Surface Processes van Wessem, J.M. Jan Van De Berg, Willem Noël, Brice P.Y. van Meijgaard, Erik Amory, Charles Birnbaum, Gerit Jakobs, Constantijn L. Krüger, Konstantin Lenaerts, Jan T.M. Lhermitte, Stef Ligtenberg, Stefan R.M. Medley, Brooke Reijmer, Carleen H. Van Tricht, Kristof Trusel, Luke D. van Ulft, Lambertus H. Wouters, Bert Wuite, Jan Van Den Broeke, Michiel R. Modelling the climate and surface mass balance of polar ice sheets using RACMO2: Part 2: Antarctica (1979-2016) |
topic_facet |
Water Science and Technology Earth-Surface Processes |
description |
We evaluate modelled Antarctic ice sheet (AIS) near-surface climate, surface mass balance (SMB) and surface energy balance (SEB) from the updated polar version of the regional atmospheric climate model, RACMO2 (1979-2016). The updated model, referred to as RACMO2.3p2, incorporates upper-air relaxation, a revised topography, tuned parameters in the cloud scheme to generate more precipitation towards the AIS interior and modified snow properties reducing drifting snow sublimation and increasing surface snowmelt. Comparisons of RACMO2 model output with several independent observational data show that the existing biases in AIS temperature, radiative fluxes and SMB components are further reduced with respect to the previous model version. The model-integrated annual average SMB for the ice sheet including ice shelves (minus the Antarctic Peninsula, AP) now amounts to 2229ĝ€Gtĝ€yĝ'1, with an interannual variability of 109ĝ€Gtĝ€yĝ'1. The largest improvement is found in modelled surface snowmelt, which now compares well with satellite and weather station observations. For the high-resolution ( ĝ1/4 ĝ€5.5ĝ€km) AP simulation, results remain comparable to earlier studies. The updated model provides a new, high-resolution data set of the contemporary near-surface climate and SMB of the AIS; this model version will be used for future climate scenario projections in a forthcoming study. |
author2 |
Sub Dynamics Meteorology Marine and Atmospheric Research |
format |
Article in Journal/Newspaper |
author |
van Wessem, J.M. Jan Van De Berg, Willem Noël, Brice P.Y. van Meijgaard, Erik Amory, Charles Birnbaum, Gerit Jakobs, Constantijn L. Krüger, Konstantin Lenaerts, Jan T.M. Lhermitte, Stef Ligtenberg, Stefan R.M. Medley, Brooke Reijmer, Carleen H. Van Tricht, Kristof Trusel, Luke D. van Ulft, Lambertus H. Wouters, Bert Wuite, Jan Van Den Broeke, Michiel R. |
author_facet |
van Wessem, J.M. Jan Van De Berg, Willem Noël, Brice P.Y. van Meijgaard, Erik Amory, Charles Birnbaum, Gerit Jakobs, Constantijn L. Krüger, Konstantin Lenaerts, Jan T.M. Lhermitte, Stef Ligtenberg, Stefan R.M. Medley, Brooke Reijmer, Carleen H. Van Tricht, Kristof Trusel, Luke D. van Ulft, Lambertus H. Wouters, Bert Wuite, Jan Van Den Broeke, Michiel R. |
author_sort |
van Wessem, J.M. |
title |
Modelling the climate and surface mass balance of polar ice sheets using RACMO2: Part 2: Antarctica (1979-2016) |
title_short |
Modelling the climate and surface mass balance of polar ice sheets using RACMO2: Part 2: Antarctica (1979-2016) |
title_full |
Modelling the climate and surface mass balance of polar ice sheets using RACMO2: Part 2: Antarctica (1979-2016) |
title_fullStr |
Modelling the climate and surface mass balance of polar ice sheets using RACMO2: Part 2: Antarctica (1979-2016) |
title_full_unstemmed |
Modelling the climate and surface mass balance of polar ice sheets using RACMO2: Part 2: Antarctica (1979-2016) |
title_sort |
modelling the climate and surface mass balance of polar ice sheets using racmo2: part 2: antarctica (1979-2016) |
publishDate |
2018 |
url |
https://dspace.library.uu.nl/handle/1874/364458 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet Ice Shelves |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet Ice Shelves |
op_relation |
1994-0416 https://dspace.library.uu.nl/handle/1874/364458 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782335233601830912 |