10 years of Polar Stratospheric Clouds lidar measurements at the French antarctic station Dumont d'Urville
International audience Polar Stratospheric Clouds (PSCs) play a primary role in polar stratospheric ozone depletion processes. Aside from recent improvements in both spaceborne monitoring as well as investigations on microphysics and modeling, there are still caveats on building a comprehensive pict...
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ftsorbonneuniv:oai:HAL:insu-03189456v1 2024-09-15T17:44:32+00:00 10 years of Polar Stratospheric Clouds lidar measurements at the French antarctic station Dumont d'Urville Jumelet, Julien Tencé, Florent Sarkissian, Alain Bekki, Slimane Keckhut, Philippe STRATO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Online, Germany 2021-04 https://insu.hal.science/insu-03189456 https://doi.org/10.5194/egusphere-egu21-12508 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/egusphere-egu21-12508 insu-03189456 https://insu.hal.science/insu-03189456 doi:10.5194/egusphere-egu21-12508 EGU General Assembly 2021 https://insu.hal.science/insu-03189456 EGU General Assembly 2021, Apr 2021, Online, Germany. pp.EGU21-12508, ⟨10.5194/egusphere-egu21-12508⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/conferenceObject Conference papers 2021 ftsorbonneuniv https://doi.org/10.5194/egusphere-egu21-12508 2024-07-25T23:47:55Z International audience Polar Stratospheric Clouds (PSCs) play a primary role in polar stratospheric ozone depletion processes. Aside from recent improvements in both spaceborne monitoring as well as investigations on microphysics and modeling, there are still caveats on building a comprehensive picture of the PSC particle population, especially considering the fine optical signatures of some particles. In that regard, groundbased instruments provide fine and long term reference measurements that complement the global spaceborne coverage.Operated at the French antarctic station Dumont d’Urville (DDU) in the frame of the international Network for the Detection of Atmospheric Composition Change (NDACC), the Rayleigh/Mie/Raman lidar provides over the years a solid dataset to feed both process and classification studies, by monitoring cloud and aerosol occurrences in the upper troposphere and lower stratosphere. Located on antarctic shore (66°S - 140°E), the station has a privileged access to polar vortex dynamics. Measurements are weather-dependent with a yearly average of 130 nights of monitoring. Expected PSC formation temperatures are used to evaluate the whole PSC season occurrence statistics.We hereby present a consolidated dataset from 10 years of lidar measurements using the 532nm backscatter ratio, the aerosol depolarisation and local atmospheric conditions to help in building an aerosol/cloud classification. Overall, the DDU PSC pattern is very consistent with expected typical temperature controlled thresholds. Supercooled Ternary Solution (STS) particles are the most observed particle type, closely followed by Nitric Acid Trihydrate (NAT). ICE clouds are more rarely observed. The measurements also feature significant and detailed signatures of various aerosols events having reached the polar antarctic stratosphere, like the Calbuco eruption (2015) or the 2 australian wildfires episodes (2009 and 2019). We aim at refining the identification of those aerosols to include their impact in the scope of the ... Conference Object Antarc* Antarctic HAL Sorbonne Université |
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Open Polar |
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HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
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[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Jumelet, Julien Tencé, Florent Sarkissian, Alain Bekki, Slimane Keckhut, Philippe 10 years of Polar Stratospheric Clouds lidar measurements at the French antarctic station Dumont d'Urville |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
International audience Polar Stratospheric Clouds (PSCs) play a primary role in polar stratospheric ozone depletion processes. Aside from recent improvements in both spaceborne monitoring as well as investigations on microphysics and modeling, there are still caveats on building a comprehensive picture of the PSC particle population, especially considering the fine optical signatures of some particles. In that regard, groundbased instruments provide fine and long term reference measurements that complement the global spaceborne coverage.Operated at the French antarctic station Dumont d’Urville (DDU) in the frame of the international Network for the Detection of Atmospheric Composition Change (NDACC), the Rayleigh/Mie/Raman lidar provides over the years a solid dataset to feed both process and classification studies, by monitoring cloud and aerosol occurrences in the upper troposphere and lower stratosphere. Located on antarctic shore (66°S - 140°E), the station has a privileged access to polar vortex dynamics. Measurements are weather-dependent with a yearly average of 130 nights of monitoring. Expected PSC formation temperatures are used to evaluate the whole PSC season occurrence statistics.We hereby present a consolidated dataset from 10 years of lidar measurements using the 532nm backscatter ratio, the aerosol depolarisation and local atmospheric conditions to help in building an aerosol/cloud classification. Overall, the DDU PSC pattern is very consistent with expected typical temperature controlled thresholds. Supercooled Ternary Solution (STS) particles are the most observed particle type, closely followed by Nitric Acid Trihydrate (NAT). ICE clouds are more rarely observed. The measurements also feature significant and detailed signatures of various aerosols events having reached the polar antarctic stratosphere, like the Calbuco eruption (2015) or the 2 australian wildfires episodes (2009 and 2019). We aim at refining the identification of those aerosols to include their impact in the scope of the ... |
author2 |
STRATO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Conference Object |
author |
Jumelet, Julien Tencé, Florent Sarkissian, Alain Bekki, Slimane Keckhut, Philippe |
author_facet |
Jumelet, Julien Tencé, Florent Sarkissian, Alain Bekki, Slimane Keckhut, Philippe |
author_sort |
Jumelet, Julien |
title |
10 years of Polar Stratospheric Clouds lidar measurements at the French antarctic station Dumont d'Urville |
title_short |
10 years of Polar Stratospheric Clouds lidar measurements at the French antarctic station Dumont d'Urville |
title_full |
10 years of Polar Stratospheric Clouds lidar measurements at the French antarctic station Dumont d'Urville |
title_fullStr |
10 years of Polar Stratospheric Clouds lidar measurements at the French antarctic station Dumont d'Urville |
title_full_unstemmed |
10 years of Polar Stratospheric Clouds lidar measurements at the French antarctic station Dumont d'Urville |
title_sort |
10 years of polar stratospheric clouds lidar measurements at the french antarctic station dumont d'urville |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://insu.hal.science/insu-03189456 https://doi.org/10.5194/egusphere-egu21-12508 |
op_coverage |
Online, Germany |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
EGU General Assembly 2021 https://insu.hal.science/insu-03189456 EGU General Assembly 2021, Apr 2021, Online, Germany. pp.EGU21-12508, ⟨10.5194/egusphere-egu21-12508⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/egusphere-egu21-12508 insu-03189456 https://insu.hal.science/insu-03189456 doi:10.5194/egusphere-egu21-12508 |
op_doi |
https://doi.org/10.5194/egusphere-egu21-12508 |
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1810492169361817600 |