Blowing snow sublimation at high altitude and effects on the surface boundary layer
International audience In alpine terrain, wind-induced snow transport strongly influences the spatial and temporal variability of the snow cover. During their transport, blown snow particles undergo sublimation with an intensity depending on atmospheric conditions (air temperature and humidity). The...
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ftccsdartic:oai:HAL:hal-01985072v1 2023-05-15T14:02:13+02:00 Blowing snow sublimation at high altitude and effects on the surface boundary layer Vionnet, Vincent Guyomarc’h, Gilbert Sicart, Jean Emmanuel Déliot, Yannick Naaim-Bouvet, F. Bellot, Hervé Hugo, Merzisen Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Centre National de la Recherche Scientifique (CNRS) University of Saskatchewan Saskatoon (U of S) Institut des Géosciences de l’Environnement (IGE) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Recherche pour le Développement (IRD)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Erosion torrentielle neige et avalanches (UR ETGR (ETNA)) Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) New Orleans, United States 2017-12-11 https://hal.archives-ouvertes.fr/hal-01985072 en eng HAL CCSD hal-01985072 https://hal.archives-ouvertes.fr/hal-01985072 American Geophysical Union, Fall Meeting 2017 https://hal.archives-ouvertes.fr/hal-01985072 American Geophysical Union, Fall Meeting 2017, Dec 2017, New Orleans, United States [SDU]Sciences of the Universe [physics] [SDE]Environmental Sciences info:eu-repo/semantics/conferenceObject Conference papers 2017 ftccsdartic 2021-11-07T02:21:34Z International audience In alpine terrain, wind-induced snow transport strongly influences the spatial and temporal variability of the snow cover. During their transport, blown snow particles undergo sublimation with an intensity depending on atmospheric conditions (air temperature and humidity). The mass loss due to blowing snow sublimation is a source of uncertainty for the mass balance of the alpine snowpack. Additionally, blowing snow sublimation modifies humidity and temperature in the surface boundary layer. To better quantify these effects in alpine terrain, a dedicated measurement setup has been deployed at the experimental site of Col du Lac Blanc (2720 m a.s.l., French Alps, Cryobs-Clim network) since winter 2015/2016. It consists in three vertical masts measuring the near-surface vertical profiles (0.2-5 m) of wind speed, air temperature and humidity and blowing snow fluxes and size distribution. Observations collected during blowing snow events without concurrent snowfall show only a slight increase in relative humidity (10-20%) and near-surface saturation is never observed. Estimation of blowing snow sublimation rates are then obtained from these measurements. They range between 0 and 5 mmSWE day-1 for blowing snow events without snowfall in agreement with previous studies in different environments (North American prairies, Antarctica). Finally, an estimation of the mass loss due to blowing snow sublimation at our experimental site is proposed for two consecutive winters. Future use of the database collected in this study includes the evaluation of blowing snow models in alpine terrain Conference Object Antarc* Antarctica Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Lac Blanc ENVELOPE(68.917,68.917,-49.217,-49.217) Orleans ENVELOPE(-60.667,-60.667,-63.950,-63.950) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] [SDE]Environmental Sciences |
spellingShingle |
[SDU]Sciences of the Universe [physics] [SDE]Environmental Sciences Vionnet, Vincent Guyomarc’h, Gilbert Sicart, Jean Emmanuel Déliot, Yannick Naaim-Bouvet, F. Bellot, Hervé Hugo, Merzisen Blowing snow sublimation at high altitude and effects on the surface boundary layer |
topic_facet |
[SDU]Sciences of the Universe [physics] [SDE]Environmental Sciences |
description |
International audience In alpine terrain, wind-induced snow transport strongly influences the spatial and temporal variability of the snow cover. During their transport, blown snow particles undergo sublimation with an intensity depending on atmospheric conditions (air temperature and humidity). The mass loss due to blowing snow sublimation is a source of uncertainty for the mass balance of the alpine snowpack. Additionally, blowing snow sublimation modifies humidity and temperature in the surface boundary layer. To better quantify these effects in alpine terrain, a dedicated measurement setup has been deployed at the experimental site of Col du Lac Blanc (2720 m a.s.l., French Alps, Cryobs-Clim network) since winter 2015/2016. It consists in three vertical masts measuring the near-surface vertical profiles (0.2-5 m) of wind speed, air temperature and humidity and blowing snow fluxes and size distribution. Observations collected during blowing snow events without concurrent snowfall show only a slight increase in relative humidity (10-20%) and near-surface saturation is never observed. Estimation of blowing snow sublimation rates are then obtained from these measurements. They range between 0 and 5 mmSWE day-1 for blowing snow events without snowfall in agreement with previous studies in different environments (North American prairies, Antarctica). Finally, an estimation of the mass loss due to blowing snow sublimation at our experimental site is proposed for two consecutive winters. Future use of the database collected in this study includes the evaluation of blowing snow models in alpine terrain |
author2 |
Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Centre National de la Recherche Scientifique (CNRS) University of Saskatchewan Saskatoon (U of S) Institut des Géosciences de l’Environnement (IGE) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Recherche pour le Développement (IRD)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Erosion torrentielle neige et avalanches (UR ETGR (ETNA)) Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) |
format |
Conference Object |
author |
Vionnet, Vincent Guyomarc’h, Gilbert Sicart, Jean Emmanuel Déliot, Yannick Naaim-Bouvet, F. Bellot, Hervé Hugo, Merzisen |
author_facet |
Vionnet, Vincent Guyomarc’h, Gilbert Sicart, Jean Emmanuel Déliot, Yannick Naaim-Bouvet, F. Bellot, Hervé Hugo, Merzisen |
author_sort |
Vionnet, Vincent |
title |
Blowing snow sublimation at high altitude and effects on the surface boundary layer |
title_short |
Blowing snow sublimation at high altitude and effects on the surface boundary layer |
title_full |
Blowing snow sublimation at high altitude and effects on the surface boundary layer |
title_fullStr |
Blowing snow sublimation at high altitude and effects on the surface boundary layer |
title_full_unstemmed |
Blowing snow sublimation at high altitude and effects on the surface boundary layer |
title_sort |
blowing snow sublimation at high altitude and effects on the surface boundary layer |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.archives-ouvertes.fr/hal-01985072 |
op_coverage |
New Orleans, United States |
long_lat |
ENVELOPE(68.917,68.917,-49.217,-49.217) ENVELOPE(-60.667,-60.667,-63.950,-63.950) |
geographic |
Lac Blanc Orleans |
geographic_facet |
Lac Blanc Orleans |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
American Geophysical Union, Fall Meeting 2017 https://hal.archives-ouvertes.fr/hal-01985072 American Geophysical Union, Fall Meeting 2017, Dec 2017, New Orleans, United States |
op_relation |
hal-01985072 https://hal.archives-ouvertes.fr/hal-01985072 |
_version_ |
1766272339418284032 |