Transport of snow by the wind: a comparison betweenobservations in Adélie Land, Antarctica, and simulationsmade with the Regional Climate Model MAR
For the first time a simulation of blowing snow events was validated in detail using one-month long observations (January 2010) made in Adélie Land, Antarctica. A regional climate model featuring a coupled atmosphere/blowing snow/snowpack model is forced laterally by meteorological re-analyses. The...
Published in: | Boundary-Layer Meteorology |
---|---|
Main Authors: | , , , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2013
|
Subjects: | |
Online Access: | https://irsteadoc.irstea.fr/cemoa/PUB00036216 |
id |
ftcemoa:oai:irsteadoc.irstea.fr:PUB00036216 |
---|---|
record_format |
openpolar |
spelling |
ftcemoa:oai:irsteadoc.irstea.fr:PUB00036216 2023-05-15T13:54:07+02:00 Transport of snow by the wind: a comparison betweenobservations in Adélie Land, Antarctica, and simulationsmade with the Regional Climate Model MAR Gallée, H. Trouvilliez, A. Agosta, C. Genthon, C. Favier, V. Naaim-Bouvet, F. UNIVERSITE DE GRENOBLE I CNRS UMR 5183 LGGE FRA IRSTEA GRENOBLE UR ETGR FRA ADELIE ANTARCTIQUE 2013 application/pdf https://irsteadoc.irstea.fr/cemoa/PUB00036216 Anglais eng http://dx.doi.org/10.1007/s10546-012-9764-z https://irsteadoc.irstea.fr/cemoa/PUB00036216 Date de dépôt: 2012-10-11 - Tous les documents et informations contenus dans la base CemOA Publications sont protégés en vertu du droit de propriété intellectuelle, en particulier par le droit d'auteur. La personne consultant la base CemOA Publications peut visualiser, reproduire, ou stocker des copies des publications, à condition que l'information soit seulement pour son usage personnel et non commercial. L'utilisation des travaux universitaires est soumise à autorisation préalable de leurs auteurs. Toute information relative au signalement d'une publication contenue dans CemOA Publications doit inclure la citation bibliographique usuelle : Nom du ou des auteurs, titre et source du document, date et URL de la notice (dc_identifier). 29931 TRANSPORT DE NEIGE PAR LE VENT MODELE REGIONALISE CLIMAT VALIDATION CLIMATE DRIFTING SNOW Article de revue scientifique à comité de lecture 2013 ftcemoa https://doi.org/10.1007/s10546-012-9764-z 2021-06-29T10:09:31Z For the first time a simulation of blowing snow events was validated in detail using one-month long observations (January 2010) made in Adélie Land, Antarctica. A regional climate model featuring a coupled atmosphere/blowing snow/snowpack model is forced laterally by meteorological re-analyses. The vertical grid spacing was 2 m from 2 to 20 m above the surface and the horizontal grid spacing was 5 km. The simulation was validated by comparing the occurrence of blowing snow events and other meteorological parameters at two automatic weather stations. The Nash test allowed us to compute efficiencies of the simulation. The regional climate model simulated the observed wind speed with a positive efficiency (0.69). Wind speeds higher than 12 m s-1 were underestimated. Positive efficiency of the simulated wind speed was a prerequisite for validating the blowing snow model. Temperatures were simulated with a slightly negative efficiency (-0.16) due to overestimation of the amplitude of the diurnal cycle during one week, probably because the cloud cover was underestimated at that location during the period concerned. Snowfall events were correctly simulated by our model, as confirmed by field reports. Because observations suggested that our instrument (an acoustic sounder) tends to overestimate the blowing snow flux, data were not sufficiently accurate to allow the complete validation of snow drift values. However, the simulation of blowing snow occurrence was in good agreement with the observations made during the first 20 days of January 2010, despite the fact that the blowing snow flux may be underestimated by the regional climate model during pure blowing snow events.We found that blowing snow occurs in Adélie Land only when the 30-min wind speed value at 2 m a.g.l. is >10 m s-1. The validation for the last 10 days of January 2010 was less satisfactory because of complications introduced by surface melting and refreezing. Article in Journal/Newspaper Antarc* Antarctica Antarctique* Irstea Publications et Bases documentaires (Irstea@doc/CemOA) Nash ENVELOPE(-62.350,-62.350,-74.233,-74.233) Boundary-Layer Meteorology 146 1 133 147 |
institution |
Open Polar |
collection |
Irstea Publications et Bases documentaires (Irstea@doc/CemOA) |
op_collection_id |
ftcemoa |
language |
English |
topic |
TRANSPORT DE NEIGE PAR LE VENT MODELE REGIONALISE CLIMAT VALIDATION CLIMATE DRIFTING SNOW |
spellingShingle |
TRANSPORT DE NEIGE PAR LE VENT MODELE REGIONALISE CLIMAT VALIDATION CLIMATE DRIFTING SNOW Gallée, H. Trouvilliez, A. Agosta, C. Genthon, C. Favier, V. Naaim-Bouvet, F. Transport of snow by the wind: a comparison betweenobservations in Adélie Land, Antarctica, and simulationsmade with the Regional Climate Model MAR |
topic_facet |
TRANSPORT DE NEIGE PAR LE VENT MODELE REGIONALISE CLIMAT VALIDATION CLIMATE DRIFTING SNOW |
description |
For the first time a simulation of blowing snow events was validated in detail using one-month long observations (January 2010) made in Adélie Land, Antarctica. A regional climate model featuring a coupled atmosphere/blowing snow/snowpack model is forced laterally by meteorological re-analyses. The vertical grid spacing was 2 m from 2 to 20 m above the surface and the horizontal grid spacing was 5 km. The simulation was validated by comparing the occurrence of blowing snow events and other meteorological parameters at two automatic weather stations. The Nash test allowed us to compute efficiencies of the simulation. The regional climate model simulated the observed wind speed with a positive efficiency (0.69). Wind speeds higher than 12 m s-1 were underestimated. Positive efficiency of the simulated wind speed was a prerequisite for validating the blowing snow model. Temperatures were simulated with a slightly negative efficiency (-0.16) due to overestimation of the amplitude of the diurnal cycle during one week, probably because the cloud cover was underestimated at that location during the period concerned. Snowfall events were correctly simulated by our model, as confirmed by field reports. Because observations suggested that our instrument (an acoustic sounder) tends to overestimate the blowing snow flux, data were not sufficiently accurate to allow the complete validation of snow drift values. However, the simulation of blowing snow occurrence was in good agreement with the observations made during the first 20 days of January 2010, despite the fact that the blowing snow flux may be underestimated by the regional climate model during pure blowing snow events.We found that blowing snow occurs in Adélie Land only when the 30-min wind speed value at 2 m a.g.l. is >10 m s-1. The validation for the last 10 days of January 2010 was less satisfactory because of complications introduced by surface melting and refreezing. |
author2 |
UNIVERSITE DE GRENOBLE I CNRS UMR 5183 LGGE FRA IRSTEA GRENOBLE UR ETGR FRA |
format |
Article in Journal/Newspaper |
author |
Gallée, H. Trouvilliez, A. Agosta, C. Genthon, C. Favier, V. Naaim-Bouvet, F. |
author_facet |
Gallée, H. Trouvilliez, A. Agosta, C. Genthon, C. Favier, V. Naaim-Bouvet, F. |
author_sort |
Gallée, H. |
title |
Transport of snow by the wind: a comparison betweenobservations in Adélie Land, Antarctica, and simulationsmade with the Regional Climate Model MAR |
title_short |
Transport of snow by the wind: a comparison betweenobservations in Adélie Land, Antarctica, and simulationsmade with the Regional Climate Model MAR |
title_full |
Transport of snow by the wind: a comparison betweenobservations in Adélie Land, Antarctica, and simulationsmade with the Regional Climate Model MAR |
title_fullStr |
Transport of snow by the wind: a comparison betweenobservations in Adélie Land, Antarctica, and simulationsmade with the Regional Climate Model MAR |
title_full_unstemmed |
Transport of snow by the wind: a comparison betweenobservations in Adélie Land, Antarctica, and simulationsmade with the Regional Climate Model MAR |
title_sort |
transport of snow by the wind: a comparison betweenobservations in adélie land, antarctica, and simulationsmade with the regional climate model mar |
publishDate |
2013 |
url |
https://irsteadoc.irstea.fr/cemoa/PUB00036216 |
op_coverage |
ADELIE ANTARCTIQUE |
long_lat |
ENVELOPE(-62.350,-62.350,-74.233,-74.233) |
geographic |
Nash |
geographic_facet |
Nash |
genre |
Antarc* Antarctica Antarctique* |
genre_facet |
Antarc* Antarctica Antarctique* |
op_source |
29931 |
op_relation |
http://dx.doi.org/10.1007/s10546-012-9764-z https://irsteadoc.irstea.fr/cemoa/PUB00036216 |
op_rights |
Date de dépôt: 2012-10-11 - Tous les documents et informations contenus dans la base CemOA Publications sont protégés en vertu du droit de propriété intellectuelle, en particulier par le droit d'auteur. La personne consultant la base CemOA Publications peut visualiser, reproduire, ou stocker des copies des publications, à condition que l'information soit seulement pour son usage personnel et non commercial. L'utilisation des travaux universitaires est soumise à autorisation préalable de leurs auteurs. Toute information relative au signalement d'une publication contenue dans CemOA Publications doit inclure la citation bibliographique usuelle : Nom du ou des auteurs, titre et source du document, date et URL de la notice (dc_identifier). |
op_doi |
https://doi.org/10.1007/s10546-012-9764-z |
container_title |
Boundary-Layer Meteorology |
container_volume |
146 |
container_issue |
1 |
container_start_page |
133 |
op_container_end_page |
147 |
_version_ |
1766259761989287936 |