Antarctica precipitation statistics
Climate models predict a significant increase of Antarctic precipitation with global warming, with a negative contribution to sea-level. Direct observation of precipitation on the field is very difficult in Antarctica due to harsh conditions. Therefore very few such observations are available. Accum...
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ftcemoa:oai:irsteadoc.irstea.fr:PUB00032611 2023-05-15T13:54:06+02:00 Antarctica precipitation statistics Trouvilliez, A. Barandun, M. Genthon, G. CEMAGREF GRENOBLE ETGR DEPARTMENT OF GEOSCIENCE FRIBOURG CHE CNRS UNIVERSITE DE GRENOBLE I LGGE FRA ANTARCTIQUE 2011 application/pdf https://irsteadoc.irstea.fr/cemoa/PUB00032611 Anglais eng https://irsteadoc.irstea.fr/cemoa/PUB00032611 Date de dépôt: 2011-07-22 - 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). 27022 PRECIPITATION ANALYSE STATISTIQUE BILAN DE MASSE NEIGE SOUFFLEE TELEDETECTION DONNEE DE SATELLITE STATISTICAL METHODS REMOTE SENSING WEIGHT BREAKDOWN BLOWING SNOW SATELLITE DATA Poster 2011 ftcemoa 2021-06-29T09:48:08Z Climate models predict a significant increase of Antarctic precipitation with global warming, with a negative contribution to sea-level. Direct observation of precipitation on the field is very difficult in Antarctica due to harsh conditions. Therefore very few such observations are available. Accumulation, i.e. surface mass balance that can be evaluated using glaciological rather than meteorological approaches, is only a first order proxy. Even for accumulation, there are very few observations that can characterize the variability at the time scale of the precipitation events. However, detecting precipitation events and their statistics may be significantly more accessible than measuring quantities and their variability. We show that different climate models simulate significantly different statistics of precipitation events (e.g. number of events per year) over Antarctica. Field data are acquired by a drisdrometer capable of measuring precipitation and blowing snow. Acoustic snow gauges are then use to discriminate precipitation events and blowing snow events. We show that preliminary observations of precipitation events on the field only partially agree with the models. While satellite remote sensing of Antarctic precipitation quantities is less than convincing, teledetection of precipitation events may be possible, thus offering a large scale sensitive constraint on models ability to simulate and predict Antarctic precipitation. Still Image Antarc* Antarctic Antarctica Antarctique* Irstea Publications et Bases documentaires (Irstea@doc/CemOA) Antarctic |
institution |
Open Polar |
collection |
Irstea Publications et Bases documentaires (Irstea@doc/CemOA) |
op_collection_id |
ftcemoa |
language |
English |
topic |
PRECIPITATION ANALYSE STATISTIQUE BILAN DE MASSE NEIGE SOUFFLEE TELEDETECTION DONNEE DE SATELLITE STATISTICAL METHODS REMOTE SENSING WEIGHT BREAKDOWN BLOWING SNOW SATELLITE DATA |
spellingShingle |
PRECIPITATION ANALYSE STATISTIQUE BILAN DE MASSE NEIGE SOUFFLEE TELEDETECTION DONNEE DE SATELLITE STATISTICAL METHODS REMOTE SENSING WEIGHT BREAKDOWN BLOWING SNOW SATELLITE DATA Trouvilliez, A. Barandun, M. Genthon, G. Antarctica precipitation statistics |
topic_facet |
PRECIPITATION ANALYSE STATISTIQUE BILAN DE MASSE NEIGE SOUFFLEE TELEDETECTION DONNEE DE SATELLITE STATISTICAL METHODS REMOTE SENSING WEIGHT BREAKDOWN BLOWING SNOW SATELLITE DATA |
description |
Climate models predict a significant increase of Antarctic precipitation with global warming, with a negative contribution to sea-level. Direct observation of precipitation on the field is very difficult in Antarctica due to harsh conditions. Therefore very few such observations are available. Accumulation, i.e. surface mass balance that can be evaluated using glaciological rather than meteorological approaches, is only a first order proxy. Even for accumulation, there are very few observations that can characterize the variability at the time scale of the precipitation events. However, detecting precipitation events and their statistics may be significantly more accessible than measuring quantities and their variability. We show that different climate models simulate significantly different statistics of precipitation events (e.g. number of events per year) over Antarctica. Field data are acquired by a drisdrometer capable of measuring precipitation and blowing snow. Acoustic snow gauges are then use to discriminate precipitation events and blowing snow events. We show that preliminary observations of precipitation events on the field only partially agree with the models. While satellite remote sensing of Antarctic precipitation quantities is less than convincing, teledetection of precipitation events may be possible, thus offering a large scale sensitive constraint on models ability to simulate and predict Antarctic precipitation. |
author2 |
CEMAGREF GRENOBLE ETGR DEPARTMENT OF GEOSCIENCE FRIBOURG CHE CNRS UNIVERSITE DE GRENOBLE I LGGE FRA |
format |
Still Image |
author |
Trouvilliez, A. Barandun, M. Genthon, G. |
author_facet |
Trouvilliez, A. Barandun, M. Genthon, G. |
author_sort |
Trouvilliez, A. |
title |
Antarctica precipitation statistics |
title_short |
Antarctica precipitation statistics |
title_full |
Antarctica precipitation statistics |
title_fullStr |
Antarctica precipitation statistics |
title_full_unstemmed |
Antarctica precipitation statistics |
title_sort |
antarctica precipitation statistics |
publishDate |
2011 |
url |
https://irsteadoc.irstea.fr/cemoa/PUB00032611 |
op_coverage |
ANTARCTIQUE |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Antarctique* |
genre_facet |
Antarc* Antarctic Antarctica Antarctique* |
op_source |
27022 |
op_relation |
https://irsteadoc.irstea.fr/cemoa/PUB00032611 |
op_rights |
Date de dépôt: 2011-07-22 - 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). |
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