Seasonal Variations in Drag Coefficient over a Sastrugi-Covered Snowfield in Coastal East Antarctica

• Main Authors: Amory, Charles, Gallée, Hubert, Naaim-Bouvet, Florence, Favier, Vincent, Vignon, Etienne, Picard, Ghislain, Trouvilliez, Alexandre, Piard, Luc, Genthon, Christophe, Bellot, Hervé
• Other Authors: Institut des Géosciences de l’Environnement (IGE), Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ), University of Lieges, Erosion torrentielle neige et avalanches (UR ETGR (ETNA)), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Glaciers et ressources en eau d'altitude - Indicateurs climatiques et environnementaux (GREATICE)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2017
• Subjects: Snow surface roughness; Sastrugi; Drifting snow; Antarctica; Drag coefficient; [SDU]Sciences of the Universe [physics]; [SDU.OCEAN]Sciences of the Universe [physics]/Ocean; Atmosphere; [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces; environment; [SDE]Environmental Sciences; Antarctic; East Antarctica; Adelie Land; Antarc*
• Online Access: https://hal.archives-ouvertes.fr/hal-01985034

International audience The surface of windy Antarctic snowfields is subject to drifting snow, which leads to the formation of sastrugi. In turn, sastrugi contribute to the drag exerted by the snow surface on the atmosphere and hence influence drifting snow. Although the surface drag over rough sastr...