Do climate models underestimate snow accumulation on the Antarctic plateau? A re-evaluation of/from in situ observations in East Wilkes and Victoria Lands
International audience It has been suggested that meteorological and climate models underestimate snow accumulation on the Antarctic plateau, because accumulation (or surface mass balance (SMB)) is dominated by clear-sky precipitation while this process is not properly taken into account in the mode...
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ftunivsavoie:oai:HAL:insu-00420638v1 2024-04-28T07:55:27+00:00 Do climate models underestimate snow accumulation on the Antarctic plateau? A re-evaluation of/from in situ observations in East Wilkes and Victoria Lands Genthon, Christophe Magand, Olivier Krinner, Gerhard Fily, Michel 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) 2009-03 https://insu.hal.science/insu-00420638 https://insu.hal.science/insu-00420638/document https://insu.hal.science/insu-00420638/file/do-climate-models-underestimate-snow-accumulation-on-the-antarctic-plateau-a-re-evaluation-offrom-in-situ-observations-in-east-wilkes-and-victoria-lands.pdf https://doi.org/10.3189/172756409787769735 en eng HAL CCSD Cambridge University Press info:eu-repo/semantics/altIdentifier/doi/10.3189/172756409787769735 insu-00420638 https://insu.hal.science/insu-00420638 https://insu.hal.science/insu-00420638/document https://insu.hal.science/insu-00420638/file/do-climate-models-underestimate-snow-accumulation-on-the-antarctic-plateau-a-re-evaluation-offrom-in-situ-observations-in-east-wilkes-and-victoria-lands.pdf doi:10.3189/172756409787769735 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0260-3055 EISSN: 1727-5644 Annals of Glaciology https://insu.hal.science/insu-00420638 Annals of Glaciology, 2009, 50 (50), pp.61-65. ⟨10.3189/172756409787769735⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2009 ftunivsavoie https://doi.org/10.3189/172756409787769735 2024-04-11T00:40:51Z International audience It has been suggested that meteorological and climate models underestimate snow accumulation on the Antarctic plateau, because accumulation (or surface mass balance (SMB)) is dominated by clear-sky precipitation while this process is not properly taken into account in the models. Here, we show that differences between model and field SMB data are much reduced when the in situ SMB reports used to evaluate the models are filtered through quality-control criteria and less reliable reports are subsequently left out. We thus argue that, although not necessarily unsupported, model biases and their interpretations in terms of clear-sky vs synoptic precipitation on the Antarctic plateau may have been overstated in the past. To avoid such misleading issues, it is important that in situ SMB reports of insufficient or unassessed reliability are discarded, even at the cost of a strong reduction in spatial sampling and coverage. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Université Savoie Mont Blanc: HAL Annals of Glaciology 50 50 61 65 |
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collection |
Université Savoie Mont Blanc: HAL |
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ftunivsavoie |
language |
English |
topic |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
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[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Genthon, Christophe Magand, Olivier Krinner, Gerhard Fily, Michel Do climate models underestimate snow accumulation on the Antarctic plateau? A re-evaluation of/from in situ observations in East Wilkes and Victoria Lands |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience It has been suggested that meteorological and climate models underestimate snow accumulation on the Antarctic plateau, because accumulation (or surface mass balance (SMB)) is dominated by clear-sky precipitation while this process is not properly taken into account in the models. Here, we show that differences between model and field SMB data are much reduced when the in situ SMB reports used to evaluate the models are filtered through quality-control criteria and less reliable reports are subsequently left out. We thus argue that, although not necessarily unsupported, model biases and their interpretations in terms of clear-sky vs synoptic precipitation on the Antarctic plateau may have been overstated in the past. To avoid such misleading issues, it is important that in situ SMB reports of insufficient or unassessed reliability are discarded, even at the cost of a strong reduction in spatial sampling and coverage. |
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) |
format |
Article in Journal/Newspaper |
author |
Genthon, Christophe Magand, Olivier Krinner, Gerhard Fily, Michel |
author_facet |
Genthon, Christophe Magand, Olivier Krinner, Gerhard Fily, Michel |
author_sort |
Genthon, Christophe |
title |
Do climate models underestimate snow accumulation on the Antarctic plateau? A re-evaluation of/from in situ observations in East Wilkes and Victoria Lands |
title_short |
Do climate models underestimate snow accumulation on the Antarctic plateau? A re-evaluation of/from in situ observations in East Wilkes and Victoria Lands |
title_full |
Do climate models underestimate snow accumulation on the Antarctic plateau? A re-evaluation of/from in situ observations in East Wilkes and Victoria Lands |
title_fullStr |
Do climate models underestimate snow accumulation on the Antarctic plateau? A re-evaluation of/from in situ observations in East Wilkes and Victoria Lands |
title_full_unstemmed |
Do climate models underestimate snow accumulation on the Antarctic plateau? A re-evaluation of/from in situ observations in East Wilkes and Victoria Lands |
title_sort |
do climate models underestimate snow accumulation on the antarctic plateau? a re-evaluation of/from in situ observations in east wilkes and victoria lands |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://insu.hal.science/insu-00420638 https://insu.hal.science/insu-00420638/document https://insu.hal.science/insu-00420638/file/do-climate-models-underestimate-snow-accumulation-on-the-antarctic-plateau-a-re-evaluation-offrom-in-situ-observations-in-east-wilkes-and-victoria-lands.pdf https://doi.org/10.3189/172756409787769735 |
genre |
Annals of Glaciology Antarc* Antarctic |
genre_facet |
Annals of Glaciology Antarc* Antarctic |
op_source |
ISSN: 0260-3055 EISSN: 1727-5644 Annals of Glaciology https://insu.hal.science/insu-00420638 Annals of Glaciology, 2009, 50 (50), pp.61-65. ⟨10.3189/172756409787769735⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3189/172756409787769735 insu-00420638 https://insu.hal.science/insu-00420638 https://insu.hal.science/insu-00420638/document https://insu.hal.science/insu-00420638/file/do-climate-models-underestimate-snow-accumulation-on-the-antarctic-plateau-a-re-evaluation-offrom-in-situ-observations-in-east-wilkes-and-victoria-lands.pdf doi:10.3189/172756409787769735 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3189/172756409787769735 |
container_title |
Annals of Glaciology |
container_volume |
50 |
container_issue |
50 |
container_start_page |
61 |
op_container_end_page |
65 |
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1797580068468293632 |