Observations and modelisation of blowing and drifting snow over Antarctica
Predicted accumulation by global numerical climate models for the next century increases in East Antarctica and negatively contributes to the mean sea level rise. None of the climate models integrates a blowing snow parametrisation. However few smaller scale regional climate models include a blowing...
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Other Authors: | , , , , , |
Format: | Doctoral or Postdoctoral Thesis |
Language: | French |
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HAL CCSD
2013
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Online Access: | https://theses.hal.science/tel-01072241 https://theses.hal.science/tel-01072241/document https://theses.hal.science/tel-01072241/file/pdf2star-1412676831-34027_TROUVILLIEZ_2013_archivage.pdf |
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ftunivsavoie:oai:HAL:tel-01072241v1 |
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openpolar |
institution |
Open Polar |
collection |
Université Savoie Mont Blanc: HAL |
op_collection_id |
ftunivsavoie |
language |
French |
topic |
Physical process Modelisation Antarctica Blowing snow Drifting snow Neige soufflée Chasse neige Processus physiques Modélisation Antarctique [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
Physical process Modelisation Antarctica Blowing snow Drifting snow Neige soufflée Chasse neige Processus physiques Modélisation Antarctique [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Trouvilliez, Alexandre Observations and modelisation of blowing and drifting snow over Antarctica |
topic_facet |
Physical process Modelisation Antarctica Blowing snow Drifting snow Neige soufflée Chasse neige Processus physiques Modélisation Antarctique [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
Predicted accumulation by global numerical climate models for the next century increases in East Antarctica and negatively contributes to the mean sea level rise. None of the climate models integrates a blowing snow parametrisation. However few smaller scale regional climate models include a blowing snow parametrisation and thus can assess the climate models uncertainty on the mean sea level rise by not representing this process. Yet none of the blowing snow data available in Antarctica allows for a precise validation of a regional climate model. In this context, this PhD described the establishment of an Antarctica blowing snow database and the validation of a regional climate model including a blowing snow parametrisation. An acoustic blowing snow sensor, the FlowCapt, has been chosen to collect data in Antarctica. A comparison with an optic blowing snow sensor, the Snow Particle Counter, has been conducted in the French Alps. The capacity of the two existing FlowCapt generation has been determined on the blowing snow event and the flux quantification. A three years blowing snow model-oriented database is now available in Adélie Land, Antarctica. The threshold friction velocity and the roughness height have been calculated with their uncertainty. Blowing snow variability has been determined as well as the minimum transport rate at one field point. Two comparisons have been done with the Modèle Atmosphérique Regional (MAR), a regional climate model including a blowing snow parametrisation. Both simulations represent a small domain with a high vertical and horizontal resolution over one month. The model is able to reproduce the blowing snow event except when melting occurs or when the blowing snow height is encompassed within the first fifty centimetres above the ground. The model underestimate the snow quantity transported at the field measurement point. L'augmentation de l'accumulation de neige simulée en Antarctique de l'Est pour le siècle à venir est une contribution négative à la hausse du niveau ... |
author2 |
Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Université de Grenoble Hubert Gallée Florence Naaim-Bouvet |
format |
Doctoral or Postdoctoral Thesis |
author |
Trouvilliez, Alexandre |
author_facet |
Trouvilliez, Alexandre |
author_sort |
Trouvilliez, Alexandre |
title |
Observations and modelisation of blowing and drifting snow over Antarctica |
title_short |
Observations and modelisation of blowing and drifting snow over Antarctica |
title_full |
Observations and modelisation of blowing and drifting snow over Antarctica |
title_fullStr |
Observations and modelisation of blowing and drifting snow over Antarctica |
title_full_unstemmed |
Observations and modelisation of blowing and drifting snow over Antarctica |
title_sort |
observations and modelisation of blowing and drifting snow over antarctica |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://theses.hal.science/tel-01072241 https://theses.hal.science/tel-01072241/document https://theses.hal.science/tel-01072241/file/pdf2star-1412676831-34027_TROUVILLIEZ_2013_archivage.pdf |
genre |
Antarc* Antarctica Antarctique* East Antarctica |
genre_facet |
Antarc* Antarctica Antarctique* East Antarctica |
op_source |
https://theses.hal.science/tel-01072241 Sciences de la Terre. Université de Grenoble, 2013. Français. ⟨NNT : 2013GRENU023⟩ |
op_relation |
NNT: 2013GRENU023 tel-01072241 https://theses.hal.science/tel-01072241 https://theses.hal.science/tel-01072241/document https://theses.hal.science/tel-01072241/file/pdf2star-1412676831-34027_TROUVILLIEZ_2013_archivage.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1797573613110427648 |
spelling |
ftunivsavoie:oai:HAL:tel-01072241v1 2024-04-28T08:02:10+00:00 Observations and modelisation of blowing and drifting snow over Antarctica Observations et modélisation de la neige soufflée en Antarctique Trouvilliez, Alexandre Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Université de Grenoble Hubert Gallée Florence Naaim-Bouvet 2013-10-14 https://theses.hal.science/tel-01072241 https://theses.hal.science/tel-01072241/document https://theses.hal.science/tel-01072241/file/pdf2star-1412676831-34027_TROUVILLIEZ_2013_archivage.pdf fr fre HAL CCSD NNT: 2013GRENU023 tel-01072241 https://theses.hal.science/tel-01072241 https://theses.hal.science/tel-01072241/document https://theses.hal.science/tel-01072241/file/pdf2star-1412676831-34027_TROUVILLIEZ_2013_archivage.pdf info:eu-repo/semantics/OpenAccess https://theses.hal.science/tel-01072241 Sciences de la Terre. Université de Grenoble, 2013. Français. ⟨NNT : 2013GRENU023⟩ Physical process Modelisation Antarctica Blowing snow Drifting snow Neige soufflée Chasse neige Processus physiques Modélisation Antarctique [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/doctoralThesis Theses 2013 ftunivsavoie 2024-04-11T01:03:13Z Predicted accumulation by global numerical climate models for the next century increases in East Antarctica and negatively contributes to the mean sea level rise. None of the climate models integrates a blowing snow parametrisation. However few smaller scale regional climate models include a blowing snow parametrisation and thus can assess the climate models uncertainty on the mean sea level rise by not representing this process. Yet none of the blowing snow data available in Antarctica allows for a precise validation of a regional climate model. In this context, this PhD described the establishment of an Antarctica blowing snow database and the validation of a regional climate model including a blowing snow parametrisation. An acoustic blowing snow sensor, the FlowCapt, has been chosen to collect data in Antarctica. A comparison with an optic blowing snow sensor, the Snow Particle Counter, has been conducted in the French Alps. The capacity of the two existing FlowCapt generation has been determined on the blowing snow event and the flux quantification. A three years blowing snow model-oriented database is now available in Adélie Land, Antarctica. The threshold friction velocity and the roughness height have been calculated with their uncertainty. Blowing snow variability has been determined as well as the minimum transport rate at one field point. Two comparisons have been done with the Modèle Atmosphérique Regional (MAR), a regional climate model including a blowing snow parametrisation. Both simulations represent a small domain with a high vertical and horizontal resolution over one month. The model is able to reproduce the blowing snow event except when melting occurs or when the blowing snow height is encompassed within the first fifty centimetres above the ground. The model underestimate the snow quantity transported at the field measurement point. L'augmentation de l'accumulation de neige simulée en Antarctique de l'Est pour le siècle à venir est une contribution négative à la hausse du niveau ... Doctoral or Postdoctoral Thesis Antarc* Antarctica Antarctique* East Antarctica Université Savoie Mont Blanc: HAL |