Surface melting derived from microwave radiometers: a climatic indicator in Antarctica
International audience This paper aims at presenting a new dataset including the melt events derived from microwave remote sensing occurring in Antarctica from summer 1979/80 to 2005/06. The method for detecting melt events and sources of error is presented, and then trends in melt duration for ever...
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ftinsu:oai:HAL:insu-00377235v1 2024-04-28T07:55:25+00:00 Surface melting derived from microwave radiometers: a climatic indicator in Antarctica Picard, Ghislain Fily, Michel Gallée, Hubert 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) 2007 https://insu.hal.science/insu-00377235 https://insu.hal.science/insu-00377235/document https://insu.hal.science/insu-00377235/file/surface-melting-derived-from-microwave-radiometers-a-climatic-indicator-in-antarctica.pdf https://doi.org/10.3189/172756407782871684 en eng HAL CCSD Cambridge University Press info:eu-repo/semantics/altIdentifier/doi/10.3189/172756407782871684 insu-00377235 https://insu.hal.science/insu-00377235 https://insu.hal.science/insu-00377235/document https://insu.hal.science/insu-00377235/file/surface-melting-derived-from-microwave-radiometers-a-climatic-indicator-in-antarctica.pdf doi:10.3189/172756407782871684 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0260-3055 EISSN: 1727-5644 Annals of Glaciology https://insu.hal.science/insu-00377235 Annals of Glaciology, 2007, 46 (1), pp.29 à 34. ⟨10.3189/172756407782871684⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2007 ftinsu https://doi.org/10.3189/172756407782871684 2024-04-05T00:38:11Z International audience This paper aims at presenting a new dataset including the melt events derived from microwave remote sensing occurring in Antarctica from summer 1979/80 to 2005/06. The method for detecting melt events and sources of error is presented, and then trends in melt duration for every pixel are extracted from the dataset, mapped and analyzed. The analysis focuses on two particular cases, and the main results show that: (1) the trends over the period 1980-2006 in the Antarctic Peninsula match with lengthening of the melt season on the ice shelves and, surprisingly, shortening of the melt season in the mountainous area of the peninsula; and (2) the trends over the period 1996-2006 on the entire continent show a dipolar pattern, with the western regions experiencing decreasing melt duration, whereas East Antarctica and the Ross Ice Shelf experience increasing melt duration. This pattern closely mirrors the temperature pattern expected when the Southern Annular Mode is in a decreasing trend, as it is over the period 1996-2006. For further analysis and validation, the dataset has been made available at http://www-lgge.obs.ujf-grenoble.fr/∼picard/melting/. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Shelf Ice Shelves Ross Ice Shelf Institut national des sciences de l'Univers: HAL-INSU Annals of Glaciology 46 29 34 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Picard, Ghislain Fily, Michel Gallée, Hubert Surface melting derived from microwave radiometers: a climatic indicator in Antarctica |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience This paper aims at presenting a new dataset including the melt events derived from microwave remote sensing occurring in Antarctica from summer 1979/80 to 2005/06. The method for detecting melt events and sources of error is presented, and then trends in melt duration for every pixel are extracted from the dataset, mapped and analyzed. The analysis focuses on two particular cases, and the main results show that: (1) the trends over the period 1980-2006 in the Antarctic Peninsula match with lengthening of the melt season on the ice shelves and, surprisingly, shortening of the melt season in the mountainous area of the peninsula; and (2) the trends over the period 1996-2006 on the entire continent show a dipolar pattern, with the western regions experiencing decreasing melt duration, whereas East Antarctica and the Ross Ice Shelf experience increasing melt duration. This pattern closely mirrors the temperature pattern expected when the Southern Annular Mode is in a decreasing trend, as it is over the period 1996-2006. For further analysis and validation, the dataset has been made available at http://www-lgge.obs.ujf-grenoble.fr/∼picard/melting/. |
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 |
Picard, Ghislain Fily, Michel Gallée, Hubert |
author_facet |
Picard, Ghislain Fily, Michel Gallée, Hubert |
author_sort |
Picard, Ghislain |
title |
Surface melting derived from microwave radiometers: a climatic indicator in Antarctica |
title_short |
Surface melting derived from microwave radiometers: a climatic indicator in Antarctica |
title_full |
Surface melting derived from microwave radiometers: a climatic indicator in Antarctica |
title_fullStr |
Surface melting derived from microwave radiometers: a climatic indicator in Antarctica |
title_full_unstemmed |
Surface melting derived from microwave radiometers: a climatic indicator in Antarctica |
title_sort |
surface melting derived from microwave radiometers: a climatic indicator in antarctica |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://insu.hal.science/insu-00377235 https://insu.hal.science/insu-00377235/document https://insu.hal.science/insu-00377235/file/surface-melting-derived-from-microwave-radiometers-a-climatic-indicator-in-antarctica.pdf https://doi.org/10.3189/172756407782871684 |
genre |
Annals of Glaciology Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Shelf Ice Shelves Ross Ice Shelf |
genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Shelf Ice Shelves Ross Ice Shelf |
op_source |
ISSN: 0260-3055 EISSN: 1727-5644 Annals of Glaciology https://insu.hal.science/insu-00377235 Annals of Glaciology, 2007, 46 (1), pp.29 à 34. ⟨10.3189/172756407782871684⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3189/172756407782871684 insu-00377235 https://insu.hal.science/insu-00377235 https://insu.hal.science/insu-00377235/document https://insu.hal.science/insu-00377235/file/surface-melting-derived-from-microwave-radiometers-a-climatic-indicator-in-antarctica.pdf doi:10.3189/172756407782871684 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3189/172756407782871684 |
container_title |
Annals of Glaciology |
container_volume |
46 |
container_start_page |
29 |
op_container_end_page |
34 |
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1797579904899874816 |