Antarctica precipitation statistics
[Departement_IRSTEA]Eaux [TR1_IRSTEA]RIVAGE International audience 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 co...
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ftunivnantes:oai:HAL:hal-02595443v1 2023-05-15T13:31:26+02:00 Antarctica precipitation statistics Trouvilliez, A. Barandun, M. Genthon, G. Érosion torrentielle, neige et avalanches (UR ETGR (ETNA)) Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) Centre National de la Recherche Scientifique (CNRS) DEPARTMENT OF GEOSCIENCE FRIBOURG CHE Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) Melbourne, Australia 2011-06-27 https://hal.inrae.fr/hal-02595443 en eng HAL CCSD hal-02595443 https://hal.inrae.fr/hal-02595443 IRSTEA: PUB00032611 International Union of Geodesy and Geophysic (IUGG) https://hal.inrae.fr/hal-02595443 International Union of Geodesy and Geophysic (IUGG), Jun 2011, Melbourne, Australia. 2011 ANTARCTIQUE [SDE]Environmental Sciences info:eu-repo/semantics/conferenceObject Conference poster 2011 ftunivnantes 2022-12-07T01:34:25Z [Departement_IRSTEA]Eaux [TR1_IRSTEA]RIVAGE International audience 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. Conference Object Antarc* Antarctic Antarctica Antarctique* Université de Nantes: HAL-UNIV-NANTES Antarctic |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
ANTARCTIQUE [SDE]Environmental Sciences |
spellingShingle |
ANTARCTIQUE [SDE]Environmental Sciences Trouvilliez, A. Barandun, M. Genthon, G. Antarctica precipitation statistics |
topic_facet |
ANTARCTIQUE [SDE]Environmental Sciences |
description |
[Departement_IRSTEA]Eaux [TR1_IRSTEA]RIVAGE International audience 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 |
Érosion torrentielle, neige et avalanches (UR ETGR (ETNA)) Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) Centre National de la Recherche Scientifique (CNRS) DEPARTMENT OF GEOSCIENCE FRIBOURG CHE Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) |
format |
Conference Object |
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 |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.inrae.fr/hal-02595443 |
op_coverage |
Melbourne, Australia |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Antarctique* |
genre_facet |
Antarc* Antarctic Antarctica Antarctique* |
op_source |
International Union of Geodesy and Geophysic (IUGG) https://hal.inrae.fr/hal-02595443 International Union of Geodesy and Geophysic (IUGG), Jun 2011, Melbourne, Australia. 2011 |
op_relation |
hal-02595443 https://hal.inrae.fr/hal-02595443 IRSTEA: PUB00032611 |
_version_ |
1766018184226275328 |