Large-Eddy Simulations of the Steady Wintertime Antarctic Boundary Layer
Observations of two typical contrasting weakly stable and very stable boundary layers from the winter at Dome C station, Antarctica, are used as a benchmark for two centimetre-scale-resolution large-eddy simulations. By taking the Antarctic winter, the effects of the diurnal cycle are eliminated, en...
Published in: | Boundary-Layer Meteorology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2019
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Online Access: | http://resolver.tudelft.nl/uuid:3ba37352-e7c1-4b4c-942c-2871ec8dc937 https://doi.org/10.1007/s10546-019-00461-4 |
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fttudelft:oai:tudelft.nl:uuid:3ba37352-e7c1-4b4c-942c-2871ec8dc937 2024-04-28T07:58:40+00:00 Large-Eddy Simulations of the Steady Wintertime Antarctic Boundary Layer van der Linden, S.J.A. (author) Edwards, John M. (author) van Heerwaarden, Chiel C. (author) Vignon, Etienne (author) Genthon, Christophe (author) Petenko, Igor (author) Baas, P. (author) Jonker, H.J.J. (author) van de Wiel, B.J.H. (author) 2019 http://resolver.tudelft.nl/uuid:3ba37352-e7c1-4b4c-942c-2871ec8dc937 https://doi.org/10.1007/s10546-019-00461-4 en eng http://www.scopus.com/inward/record.url?scp=85068830578&partnerID=8YFLogxK Boundary-Layer Meteorology: an international journal of physical and biological processes in the atmospheric boundary layer--0006-8314--41df45da-24c7-49eb-88b6-1530ee14c718 http://resolver.tudelft.nl/uuid:3ba37352-e7c1-4b4c-942c-2871ec8dc937 https://doi.org/10.1007/s10546-019-00461-4 © 2019 S.J.A. van der Linden, John M. Edwards, Chiel C. van Heerwaarden, Etienne Vignon, Christophe Genthon, Igor Petenko, P. Baas, H.J.J. Jonker, B.J.H. van de Wiel Antarctic boundary layer Large-eddy simulations Long-lived stable boundary layer Subsidence heating journal article 2019 fttudelft https://doi.org/10.1007/s10546-019-00461-4 2024-04-09T23:52:51Z Observations of two typical contrasting weakly stable and very stable boundary layers from the winter at Dome C station, Antarctica, are used as a benchmark for two centimetre-scale-resolution large-eddy simulations. By taking the Antarctic winter, the effects of the diurnal cycle are eliminated, enabling the study of the long-lived steady stable boundary layer. With its homogeneous, flat snow surface, and extreme stabilities, the location is a natural laboratory for studies on the long-lived stable boundary layer. The two simulations differ only in the imposed geostrophic wind speed, which is identified as the main deciding factor for the resulting regime. In general, a good correspondence is found between the observed and simulated profiles of mean wind speed and temperature. Discrepancies in the temperature profiles are likely due to the exclusion of radiative transfer in the current simulations. The extreme stabilities result in a considerable contrast between the stable boundary layer at the Dome C site and that found at typical mid-latitudes. The boundary-layer height is found to range from approximately 50m to just 5m in the most extreme case. Remarkably, heating of the boundary layer by subsidence may result in thermal equilibrium of the boundary layer in which the associated heating is balanced by the turbulent cooling towards the surface. Using centimetre-scale resolutions, accurate large-eddy simulations of the extreme stabilities encountered in Antarctica appear to be possible. However, future simulations should aim to include radiative transfer and sub-surface heat transport to increase the degree of realism of these types of simulations. Atmospheric Remote Sensing Article in Journal/Newspaper Antarc* Antarctic Antarctica Delft University of Technology: Institutional Repository Boundary-Layer Meteorology 173 2 165 192 |
institution |
Open Polar |
collection |
Delft University of Technology: Institutional Repository |
op_collection_id |
fttudelft |
language |
English |
topic |
Antarctic boundary layer Large-eddy simulations Long-lived stable boundary layer Subsidence heating |
spellingShingle |
Antarctic boundary layer Large-eddy simulations Long-lived stable boundary layer Subsidence heating van der Linden, S.J.A. (author) Edwards, John M. (author) van Heerwaarden, Chiel C. (author) Vignon, Etienne (author) Genthon, Christophe (author) Petenko, Igor (author) Baas, P. (author) Jonker, H.J.J. (author) van de Wiel, B.J.H. (author) Large-Eddy Simulations of the Steady Wintertime Antarctic Boundary Layer |
topic_facet |
Antarctic boundary layer Large-eddy simulations Long-lived stable boundary layer Subsidence heating |
description |
Observations of two typical contrasting weakly stable and very stable boundary layers from the winter at Dome C station, Antarctica, are used as a benchmark for two centimetre-scale-resolution large-eddy simulations. By taking the Antarctic winter, the effects of the diurnal cycle are eliminated, enabling the study of the long-lived steady stable boundary layer. With its homogeneous, flat snow surface, and extreme stabilities, the location is a natural laboratory for studies on the long-lived stable boundary layer. The two simulations differ only in the imposed geostrophic wind speed, which is identified as the main deciding factor for the resulting regime. In general, a good correspondence is found between the observed and simulated profiles of mean wind speed and temperature. Discrepancies in the temperature profiles are likely due to the exclusion of radiative transfer in the current simulations. The extreme stabilities result in a considerable contrast between the stable boundary layer at the Dome C site and that found at typical mid-latitudes. The boundary-layer height is found to range from approximately 50m to just 5m in the most extreme case. Remarkably, heating of the boundary layer by subsidence may result in thermal equilibrium of the boundary layer in which the associated heating is balanced by the turbulent cooling towards the surface. Using centimetre-scale resolutions, accurate large-eddy simulations of the extreme stabilities encountered in Antarctica appear to be possible. However, future simulations should aim to include radiative transfer and sub-surface heat transport to increase the degree of realism of these types of simulations. Atmospheric Remote Sensing |
format |
Article in Journal/Newspaper |
author |
van der Linden, S.J.A. (author) Edwards, John M. (author) van Heerwaarden, Chiel C. (author) Vignon, Etienne (author) Genthon, Christophe (author) Petenko, Igor (author) Baas, P. (author) Jonker, H.J.J. (author) van de Wiel, B.J.H. (author) |
author_facet |
van der Linden, S.J.A. (author) Edwards, John M. (author) van Heerwaarden, Chiel C. (author) Vignon, Etienne (author) Genthon, Christophe (author) Petenko, Igor (author) Baas, P. (author) Jonker, H.J.J. (author) van de Wiel, B.J.H. (author) |
author_sort |
van der Linden, S.J.A. (author) |
title |
Large-Eddy Simulations of the Steady Wintertime Antarctic Boundary Layer |
title_short |
Large-Eddy Simulations of the Steady Wintertime Antarctic Boundary Layer |
title_full |
Large-Eddy Simulations of the Steady Wintertime Antarctic Boundary Layer |
title_fullStr |
Large-Eddy Simulations of the Steady Wintertime Antarctic Boundary Layer |
title_full_unstemmed |
Large-Eddy Simulations of the Steady Wintertime Antarctic Boundary Layer |
title_sort |
large-eddy simulations of the steady wintertime antarctic boundary layer |
publishDate |
2019 |
url |
http://resolver.tudelft.nl/uuid:3ba37352-e7c1-4b4c-942c-2871ec8dc937 https://doi.org/10.1007/s10546-019-00461-4 |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
http://www.scopus.com/inward/record.url?scp=85068830578&partnerID=8YFLogxK Boundary-Layer Meteorology: an international journal of physical and biological processes in the atmospheric boundary layer--0006-8314--41df45da-24c7-49eb-88b6-1530ee14c718 http://resolver.tudelft.nl/uuid:3ba37352-e7c1-4b4c-942c-2871ec8dc937 https://doi.org/10.1007/s10546-019-00461-4 |
op_rights |
© 2019 S.J.A. van der Linden, John M. Edwards, Chiel C. van Heerwaarden, Etienne Vignon, Christophe Genthon, Igor Petenko, P. Baas, H.J.J. Jonker, B.J.H. van de Wiel |
op_doi |
https://doi.org/10.1007/s10546-019-00461-4 |
container_title |
Boundary-Layer Meteorology |
container_volume |
173 |
container_issue |
2 |
container_start_page |
165 |
op_container_end_page |
192 |
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1797570855000080384 |