Daily cycle of the surface layer and energy balance on the high Antarctic Plateau
This paper focuses on the daily cycle of the surface energy balance and the atmospheric surface layer during a detailed meteorological experiment performed near Kohnen base in Dronning Maud Land, East Antarctica, in January and February 2002. Temperature, specific humidity, wind speed and the turbul...
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Online Access: | http://dx.doi.org/10.1017/s095410200500252x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410200500252X |
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crcambridgeupr:10.1017/s095410200500252x 2024-03-03T08:38:10+00:00 Daily cycle of the surface layer and energy balance on the high Antarctic Plateau VAN AS, DIRK VAN DEN BROEKE, MICHIEL VAN DE WAL, RODERIK 2005 http://dx.doi.org/10.1017/s095410200500252x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410200500252X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 17, issue 1, page 121-133 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2005 crcambridgeupr https://doi.org/10.1017/s095410200500252x 2024-02-08T08:33:05Z This paper focuses on the daily cycle of the surface energy balance and the atmospheric surface layer during a detailed meteorological experiment performed near Kohnen base in Dronning Maud Land, East Antarctica, in January and February 2002. Temperature, specific humidity, wind speed and the turbulent scales of these quantities, exhibit a strong daily cycle. The sensible heat flux cycle has a mean amplitude of ∼8 W m −2 , while the latent heat flux has an amplitude of less than 2 W m −2 , which is small compared to the amplitude of net radiation (∼ 35 W m −2 ) and sub-surface heat (∼ 25 W m −2 ). Between ∼ 9 and 16 h GMT convection occurs due to a slightly unstable atmospheric surface layer. At the end of the afternoon, the wind speed decreases abruptly and the mixed layer is no longer supported by the sensible heat input; the stratification becomes stable. At night a large near-surface wind shear is measured due to the presence of a nocturnal jet, which is likely to be katabatically driven, but can also be the result of an inertial oscillation. No strong daily cycle in wind direction is recorded, since both the katabatic forcing at night and the daytime forcing by the large-scale pressure gradient were directed approximately downslope during the period of measurement. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica Dronning Maud Land East Antarctica Cambridge University Press Antarctic East Antarctica Dronning Maud Land Kohnen ENVELOPE(0.000,0.000,-75.000,-75.000) Antarctic Science 17 1 121 133 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography VAN AS, DIRK VAN DEN BROEKE, MICHIEL VAN DE WAL, RODERIK Daily cycle of the surface layer and energy balance on the high Antarctic Plateau |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
This paper focuses on the daily cycle of the surface energy balance and the atmospheric surface layer during a detailed meteorological experiment performed near Kohnen base in Dronning Maud Land, East Antarctica, in January and February 2002. Temperature, specific humidity, wind speed and the turbulent scales of these quantities, exhibit a strong daily cycle. The sensible heat flux cycle has a mean amplitude of ∼8 W m −2 , while the latent heat flux has an amplitude of less than 2 W m −2 , which is small compared to the amplitude of net radiation (∼ 35 W m −2 ) and sub-surface heat (∼ 25 W m −2 ). Between ∼ 9 and 16 h GMT convection occurs due to a slightly unstable atmospheric surface layer. At the end of the afternoon, the wind speed decreases abruptly and the mixed layer is no longer supported by the sensible heat input; the stratification becomes stable. At night a large near-surface wind shear is measured due to the presence of a nocturnal jet, which is likely to be katabatically driven, but can also be the result of an inertial oscillation. No strong daily cycle in wind direction is recorded, since both the katabatic forcing at night and the daytime forcing by the large-scale pressure gradient were directed approximately downslope during the period of measurement. |
format |
Article in Journal/Newspaper |
author |
VAN AS, DIRK VAN DEN BROEKE, MICHIEL VAN DE WAL, RODERIK |
author_facet |
VAN AS, DIRK VAN DEN BROEKE, MICHIEL VAN DE WAL, RODERIK |
author_sort |
VAN AS, DIRK |
title |
Daily cycle of the surface layer and energy balance on the high Antarctic Plateau |
title_short |
Daily cycle of the surface layer and energy balance on the high Antarctic Plateau |
title_full |
Daily cycle of the surface layer and energy balance on the high Antarctic Plateau |
title_fullStr |
Daily cycle of the surface layer and energy balance on the high Antarctic Plateau |
title_full_unstemmed |
Daily cycle of the surface layer and energy balance on the high Antarctic Plateau |
title_sort |
daily cycle of the surface layer and energy balance on the high antarctic plateau |
publisher |
Cambridge University Press (CUP) |
publishDate |
2005 |
url |
http://dx.doi.org/10.1017/s095410200500252x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410200500252X |
long_lat |
ENVELOPE(0.000,0.000,-75.000,-75.000) |
geographic |
Antarctic East Antarctica Dronning Maud Land Kohnen |
geographic_facet |
Antarctic East Antarctica Dronning Maud Land Kohnen |
genre |
Antarc* Antarctic Antarctic Science Antarctica Dronning Maud Land East Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Dronning Maud Land East Antarctica |
op_source |
Antarctic Science volume 17, issue 1, page 121-133 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s095410200500252x |
container_title |
Antarctic Science |
container_volume |
17 |
container_issue |
1 |
container_start_page |
121 |
op_container_end_page |
133 |
_version_ |
1792505113266356224 |