Article (Scientific journals)
A novel experimental study of aeolian snow transport in Adelie Land (Antarctica)
Trouvilliez, Alexandre; Naaim-Bouvet, Florence; Genthon, Christophe et al.
2014In Cold Regions Science and Technology, 108, p. 125–138
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Keywords :
Aeolian transport; Blowing snow; Drifting snow; Antarctica; FlowCaptTM
Abstract :
[en] None of the previous aeolian snow transport campaigns in Antarctica meet the requirements in terms of tempo- ral resolution, long-term series and qualified instruments for evaluations of meteorological and climate models including parameterization for aeolian snow transport. Consequently, determining the quantity of snow transported remains a challenge. A field campaign was therefore launched in January 2009, in Adélie Land, Antarctica, to acquire new model-evaluation-oriented observations within the European ICE2SEA project, with the logistical support of the French polar Institute (IPEV). The available aeolian snow transport sensors are reviewed and the sensor that best suited our specific needs was chosen: FlowCaptTM acoustic sensors. Three au- tomatic weather stations were deployed with FlowCaptsTM close to the coast. The stations' locations are distinct, ranging from 1 to 100 km inland, one of them with a 7-m mast with six levels of anemometers and thermohygrometers. The fluid and impact threshold friction velocities recorded were 0.48 ± 0.09 m s− 1 and 0.4 ± 0.09 m s−1, respectively, with a high standard deviation of 0.12 ± 0.03 m s−1 and 0.13 ± 0.03 m s−1, respectively. The aeolian snow transport frequency in Adélie Land was very high with seasonal variation of trans- port occurring with minima during the austral summer. Seven percent of the aeolian snow transport events were drifting snow (maximum particle's height, b1 m above the surface). The snow quantity transported was above 1 kiloton per year in the first meter above the surface.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Trouvilliez, Alexandre
Naaim-Bouvet, Florence
Genthon, Christophe
Piard, Luc
Favier, Vincent
Bellot, Hervé
Agosta, Cécile ;  Université de Liège > Département de géographie > Climatologie et Topoclimatologie
Palerme, Cyril
Amory, Charles ;  Université de Liège > Département de géographie > Climatologie et Topoclimatologie
Gallée, Hubert
Language :
English
Title :
A novel experimental study of aeolian snow transport in Adelie Land (Antarctica)
Publication date :
December 2014
Journal title :
Cold Regions Science and Technology
ISSN :
0165-232X
eISSN :
1872-7441
Publisher :
Elsevier, Netherlands
Volume :
108
Pages :
125–138
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 15 June 2015

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