Radiosonde stratospheric temperatures at Dumont d'Urville (Antarctica): trends and link with polar stratospheric clouds
International audience Temperature profiles measurements are performed daily (00:00 UT) in Dumont d'Urville (66°40' S, 140°01' E) by Météo-France, using standard radiosondes, since the International Geophysical Year in 1957. Yet, due to a 16 years data gap between 1963 and 1978, the e...
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Online Access: | https://hal.science/hal-00438205 https://hal.science/hal-00438205/document https://hal.science/hal-00438205/file/acp-10-3813-2010.pdf https://doi.org/10.5194/acp-10-3813-2010 |
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ftanrparis:oai:HAL:hal-00438205v1 2024-09-15T17:46:07+00:00 Radiosonde stratospheric temperatures at Dumont d'Urville (Antarctica): trends and link with polar stratospheric clouds David, Christine Keckhut, Philippe Armetta, Anthony Jumelet, Julien Snels, Marcellinus Marchand, Marion Bekki, Slimane STRATO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Istituto di Scienze dell'Atmosfera e del Clima (ISAC) National Research Council of Italy ANR-06-BLAN-0246,ORACLE-France,Ozone layer and UV Radiation in a changing CLimate Evaluated during IPY France contribution(2006) European Project: GEOMON 2010 https://hal.science/hal-00438205 https://hal.science/hal-00438205/document https://hal.science/hal-00438205/file/acp-10-3813-2010.pdf https://doi.org/10.5194/acp-10-3813-2010 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-10-3813-2010 hal-00438205 https://hal.science/hal-00438205 https://hal.science/hal-00438205/document https://hal.science/hal-00438205/file/acp-10-3813-2010.pdf doi:10.5194/acp-10-3813-2010 info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00438205 Atmospheric Chemistry and Physics, 2010, 10 (8), pp.3813-3825. ⟨10.5194/acp-10-3813-2010⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2010 ftanrparis https://doi.org/10.5194/acp-10-3813-2010 2024-07-12T11:36:01Z International audience Temperature profiles measurements are performed daily (00:00 UT) in Dumont d'Urville (66°40' S, 140°01' E) by Météo-France, using standard radiosondes, since the International Geophysical Year in 1957. Yet, due to a 16 years data gap between 1963 and 1978, the entire dataset is only used for a qualitative overview. Only the most recent series, between 1979 and 2008, is used to investigate the inter-annual stratospheric temperatures variability. Over Dumont d'Urville, at the edge of the vortex, the annual mean temperature cooling of about 1 K/decade at 20 km is the result of the cooling trends between 0.5 and 1.4 K/decade, in summer and autumn and a warming of about 1.1 K/decade in spring. These values are consistent with values obtained using data from inner vortex stations, but with smaller amplitude. No statistically significant trend is detected in winter. We propose here the first attempt to link stratospheric temperature trends to Polar Stratospheric Cloud (PSC) trends in Antarctica based on the only continuous 20 years database of PSC lidar detection. Despite the absence of mean temperature trend during winter, the occurrence of temperatures below the NAT threshold between 1989 and 2008 reveals a significant trend of about +6%/decade. The PSCs occurrences frequency exhibits a concomitant trend of about +3%/decade, although not statistically significant. Yet, this is consistent with results obtained in the Northern Hemisphere. Such a possible positive trend in PSC occurrence has to be further explored to be confirmed or invalidated. If confirmed, this PSC trend is likely to have strong impacts, both on ozone recovery and climate evolution in Antarctica. The study also reveals the importance of trends on extreme temperatures, and not only on mean temperatures. Article in Journal/Newspaper Antarc* Antarctica Portail HAL-ANR (Agence Nationale de la Recherche) Atmospheric Chemistry and Physics 10 8 3813 3825 |
institution |
Open Polar |
collection |
Portail HAL-ANR (Agence Nationale de la Recherche) |
op_collection_id |
ftanrparis |
language |
English |
topic |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] David, Christine Keckhut, Philippe Armetta, Anthony Jumelet, Julien Snels, Marcellinus Marchand, Marion Bekki, Slimane Radiosonde stratospheric temperatures at Dumont d'Urville (Antarctica): trends and link with polar stratospheric clouds |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
International audience Temperature profiles measurements are performed daily (00:00 UT) in Dumont d'Urville (66°40' S, 140°01' E) by Météo-France, using standard radiosondes, since the International Geophysical Year in 1957. Yet, due to a 16 years data gap between 1963 and 1978, the entire dataset is only used for a qualitative overview. Only the most recent series, between 1979 and 2008, is used to investigate the inter-annual stratospheric temperatures variability. Over Dumont d'Urville, at the edge of the vortex, the annual mean temperature cooling of about 1 K/decade at 20 km is the result of the cooling trends between 0.5 and 1.4 K/decade, in summer and autumn and a warming of about 1.1 K/decade in spring. These values are consistent with values obtained using data from inner vortex stations, but with smaller amplitude. No statistically significant trend is detected in winter. We propose here the first attempt to link stratospheric temperature trends to Polar Stratospheric Cloud (PSC) trends in Antarctica based on the only continuous 20 years database of PSC lidar detection. Despite the absence of mean temperature trend during winter, the occurrence of temperatures below the NAT threshold between 1989 and 2008 reveals a significant trend of about +6%/decade. The PSCs occurrences frequency exhibits a concomitant trend of about +3%/decade, although not statistically significant. Yet, this is consistent with results obtained in the Northern Hemisphere. Such a possible positive trend in PSC occurrence has to be further explored to be confirmed or invalidated. If confirmed, this PSC trend is likely to have strong impacts, both on ozone recovery and climate evolution in Antarctica. The study also reveals the importance of trends on extreme temperatures, and not only on mean temperatures. |
author2 |
STRATO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Istituto di Scienze dell'Atmosfera e del Clima (ISAC) National Research Council of Italy ANR-06-BLAN-0246,ORACLE-France,Ozone layer and UV Radiation in a changing CLimate Evaluated during IPY France contribution(2006) European Project: GEOMON |
format |
Article in Journal/Newspaper |
author |
David, Christine Keckhut, Philippe Armetta, Anthony Jumelet, Julien Snels, Marcellinus Marchand, Marion Bekki, Slimane |
author_facet |
David, Christine Keckhut, Philippe Armetta, Anthony Jumelet, Julien Snels, Marcellinus Marchand, Marion Bekki, Slimane |
author_sort |
David, Christine |
title |
Radiosonde stratospheric temperatures at Dumont d'Urville (Antarctica): trends and link with polar stratospheric clouds |
title_short |
Radiosonde stratospheric temperatures at Dumont d'Urville (Antarctica): trends and link with polar stratospheric clouds |
title_full |
Radiosonde stratospheric temperatures at Dumont d'Urville (Antarctica): trends and link with polar stratospheric clouds |
title_fullStr |
Radiosonde stratospheric temperatures at Dumont d'Urville (Antarctica): trends and link with polar stratospheric clouds |
title_full_unstemmed |
Radiosonde stratospheric temperatures at Dumont d'Urville (Antarctica): trends and link with polar stratospheric clouds |
title_sort |
radiosonde stratospheric temperatures at dumont d'urville (antarctica): trends and link with polar stratospheric clouds |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-00438205 https://hal.science/hal-00438205/document https://hal.science/hal-00438205/file/acp-10-3813-2010.pdf https://doi.org/10.5194/acp-10-3813-2010 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00438205 Atmospheric Chemistry and Physics, 2010, 10 (8), pp.3813-3825. ⟨10.5194/acp-10-3813-2010⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-10-3813-2010 hal-00438205 https://hal.science/hal-00438205 https://hal.science/hal-00438205/document https://hal.science/hal-00438205/file/acp-10-3813-2010.pdf doi:10.5194/acp-10-3813-2010 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-10-3813-2010 |
container_title |
Atmospheric Chemistry and Physics |
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10 |
container_issue |
8 |
container_start_page |
3813 |
op_container_end_page |
3825 |
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1810494101830762496 |