Blowing snow in coastal Adélie Land, Antarctica: three atmospheric-moisture issues
A total of 3 years of blowing-snow observations and associated meteorology along a 7 m mast at site D17 in coastal Adélie Land are presented. The observations are used to address three atmospheric-moisture issues related to the occurrence of blowing snow, a feature which largely affects many regions...
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2014
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ftdoajarticles:oai:doaj.org/article:2fcff1f9544b4f12aa400e59a86d1f7c 2023-05-15T13:58:18+02:00 Blowing snow in coastal Adélie Land, Antarctica: three atmospheric-moisture issues H. Barral C. Genthon A. Trouvilliez C. Brun C. Amory 2014-10-01T00:00:00Z https://doi.org/10.5194/tc-8-1905-2014 https://doaj.org/article/2fcff1f9544b4f12aa400e59a86d1f7c EN eng Copernicus Publications http://www.the-cryosphere.net/8/1905/2014/tc-8-1905-2014.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-8-1905-2014 https://doaj.org/article/2fcff1f9544b4f12aa400e59a86d1f7c The Cryosphere, Vol 8, Iss 5, Pp 1905-1919 (2014) Environmental sciences GE1-350 Geology QE1-996.5 article 2014 ftdoajarticles https://doi.org/10.5194/tc-8-1905-2014 2022-12-30T23:44:34Z A total of 3 years of blowing-snow observations and associated meteorology along a 7 m mast at site D17 in coastal Adélie Land are presented. The observations are used to address three atmospheric-moisture issues related to the occurrence of blowing snow, a feature which largely affects many regions of Antarctica: (1) blowing-snow sublimation raises the moisture content of the surface atmosphere close to saturation, and atmospheric models and meteorological analyses that do not carry blowing-snow parameterizations are affected by a systematic dry bias; (2) while snowpack modelling with a parameterization of surface-snow erosion by wind can reproduce the variability of snow accumulation and ablation, ignoring the high levels of atmospheric-moisture content associated with blowing snow results in overestimating surface sublimation, affecting the energy budget of the snowpack; (3) the well-known profile method of calculating turbulent moisture fluxes is not applicable when blowing snow occurs, because moisture gradients are weak due to blowing-snow sublimation, and the impact of measurement uncertainties are strongly amplified in the case of strong winds. Article in Journal/Newspaper Antarc* Antarctica The Cryosphere Directory of Open Access Journals: DOAJ Articles The Cryosphere 8 5 1905 1919 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 H. Barral C. Genthon A. Trouvilliez C. Brun C. Amory Blowing snow in coastal Adélie Land, Antarctica: three atmospheric-moisture issues |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
A total of 3 years of blowing-snow observations and associated meteorology along a 7 m mast at site D17 in coastal Adélie Land are presented. The observations are used to address three atmospheric-moisture issues related to the occurrence of blowing snow, a feature which largely affects many regions of Antarctica: (1) blowing-snow sublimation raises the moisture content of the surface atmosphere close to saturation, and atmospheric models and meteorological analyses that do not carry blowing-snow parameterizations are affected by a systematic dry bias; (2) while snowpack modelling with a parameterization of surface-snow erosion by wind can reproduce the variability of snow accumulation and ablation, ignoring the high levels of atmospheric-moisture content associated with blowing snow results in overestimating surface sublimation, affecting the energy budget of the snowpack; (3) the well-known profile method of calculating turbulent moisture fluxes is not applicable when blowing snow occurs, because moisture gradients are weak due to blowing-snow sublimation, and the impact of measurement uncertainties are strongly amplified in the case of strong winds. |
format |
Article in Journal/Newspaper |
author |
H. Barral C. Genthon A. Trouvilliez C. Brun C. Amory |
author_facet |
H. Barral C. Genthon A. Trouvilliez C. Brun C. Amory |
author_sort |
H. Barral |
title |
Blowing snow in coastal Adélie Land, Antarctica: three atmospheric-moisture issues |
title_short |
Blowing snow in coastal Adélie Land, Antarctica: three atmospheric-moisture issues |
title_full |
Blowing snow in coastal Adélie Land, Antarctica: three atmospheric-moisture issues |
title_fullStr |
Blowing snow in coastal Adélie Land, Antarctica: three atmospheric-moisture issues |
title_full_unstemmed |
Blowing snow in coastal Adélie Land, Antarctica: three atmospheric-moisture issues |
title_sort |
blowing snow in coastal adélie land, antarctica: three atmospheric-moisture issues |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/tc-8-1905-2014 https://doaj.org/article/2fcff1f9544b4f12aa400e59a86d1f7c |
genre |
Antarc* Antarctica The Cryosphere |
genre_facet |
Antarc* Antarctica The Cryosphere |
op_source |
The Cryosphere, Vol 8, Iss 5, Pp 1905-1919 (2014) |
op_relation |
http://www.the-cryosphere.net/8/1905/2014/tc-8-1905-2014.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-8-1905-2014 https://doaj.org/article/2fcff1f9544b4f12aa400e59a86d1f7c |
op_doi |
https://doi.org/10.5194/tc-8-1905-2014 |
container_title |
The Cryosphere |
container_volume |
8 |
container_issue |
5 |
container_start_page |
1905 |
op_container_end_page |
1919 |
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1766266532949655552 |