Evaluation of total ozone recovery inside the Antarctic vortex
International audience The latest assessment report on the state of the ozone layer (WMO 2014) confirmed the stabilization of the ozone loss in Antarctica since 2000. Several studies have been made in order to quantify the increase in total ozone column (TOC) in the Antarctic polar vortex in spring...
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Language: | English |
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HAL CCSD
2016
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Online Access: | https://insu.hal.science/insu-01353816 |
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ftecoleponts:oai:HAL:insu-01353816v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
École des Ponts ParisTech: HAL |
op_collection_id |
ftecoleponts |
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] Pazmino, Andrea Godin-Beekmann, Sophie Hauchecorne, Alain Claud, Chantal Lefèvre, Franck Khaykin, Sergey Goutail, Florence Pommereau, Jean-Pierre Boonne, Cathy Wolfram, E. Salvador, J. Quel, E. Evaluation of total ozone recovery inside the Antarctic vortex |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
International audience The latest assessment report on the state of the ozone layer (WMO 2014) confirmed the stabilization of the ozone loss in Antarctica since 2000. Several studies have been made in order to quantify the increase in total ozone column (TOC) in the Antarctic polar vortex in spring directly linked to the small decrease of ozone depleting substances levels in the polar stratosphere. These studies generally show a significant increase of TOC averaged inside the vortex since 2000 but they differ on the proxies used for the quantification of ozone interannual variability.In this study, the trend of TOC inside the vortex is analyzed over the 1980-2015 period using multilinear regression model based on various proxies (heat flux, QBO, solar flux, AAO and aerosols). The ozone trend is simulated by a piecewise linear trend (PWLT) before and after the break year in 2000, corresponding to the change of slope in ozone long-term evolution. The originality of this study is to take into account the baroclinicity of the vortex. For this, two different methods are used to classify TOC values inside the vortex as a function of Equivalent Latitude (EL). In the first standard one, the Nash criterion (Nash et al., 1996) is applied at a single isentropic level (475K or 550K). In the second one it is applied to a range of isentropic levels between 400K and 600K with a step of 25K.The study is focused on the period September 15 - October 15, the most representative of low ozone levels inside the vortex. The trend model is applied to SAOZ UV-Vis spectrometer data at Dumont d’Urville (66.7 ̊S, 140 ̊E) and also to TOMS/OMI above Antarctica and the trend results are presented for the different classification methods. |
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) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) Institut Pierre-Simon-Laplace (IPSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS) Centro de Investigaciones en Láseres y Aplicaciones Buenos Aires (CEILAP) Consejo Nacional de Investigaciones Científicas y Técnicas Buenos Aires (CONICET)-Instituto de Investigaciones Científicas y Técnicas para la Defensa (CITEDEF) |
format |
Conference Object |
author |
Pazmino, Andrea Godin-Beekmann, Sophie Hauchecorne, Alain Claud, Chantal Lefèvre, Franck Khaykin, Sergey Goutail, Florence Pommereau, Jean-Pierre Boonne, Cathy Wolfram, E. Salvador, J. Quel, E. |
author_facet |
Pazmino, Andrea Godin-Beekmann, Sophie Hauchecorne, Alain Claud, Chantal Lefèvre, Franck Khaykin, Sergey Goutail, Florence Pommereau, Jean-Pierre Boonne, Cathy Wolfram, E. Salvador, J. Quel, E. |
author_sort |
Pazmino, Andrea |
title |
Evaluation of total ozone recovery inside the Antarctic vortex |
title_short |
Evaluation of total ozone recovery inside the Antarctic vortex |
title_full |
Evaluation of total ozone recovery inside the Antarctic vortex |
title_fullStr |
Evaluation of total ozone recovery inside the Antarctic vortex |
title_full_unstemmed |
Evaluation of total ozone recovery inside the Antarctic vortex |
title_sort |
evaluation of total ozone recovery inside the antarctic vortex |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://insu.hal.science/insu-01353816 |
op_coverage |
Edinburgh, United Kingdom |
long_lat |
ENVELOPE(-62.350,-62.350,-74.233,-74.233) ENVELOPE(140.000,140.000,-66.667,-66.667) |
geographic |
Antarctic The Antarctic Nash Dumont d’Urville |
geographic_facet |
Antarctic The Antarctic Nash Dumont d’Urville |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Quadrennial Ozone Symposium 2016 https://insu.hal.science/insu-01353816 Quadrennial Ozone Symposium 2016, Sep 2016, Edinburgh, United Kingdom |
op_relation |
insu-01353816 https://insu.hal.science/insu-01353816 |
_version_ |
1801384028030369792 |
spelling |
ftecoleponts:oai:HAL:insu-01353816v1 2024-06-09T07:40:40+00:00 Evaluation of total ozone recovery inside the Antarctic vortex Pazmino, Andrea Godin-Beekmann, Sophie Hauchecorne, Alain Claud, Chantal Lefèvre, Franck Khaykin, Sergey Goutail, Florence Pommereau, Jean-Pierre Boonne, Cathy Wolfram, E. Salvador, J. Quel, E. 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) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL) Institut Pierre-Simon-Laplace (IPSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS) Centro de Investigaciones en Láseres y Aplicaciones Buenos Aires (CEILAP) Consejo Nacional de Investigaciones Científicas y Técnicas Buenos Aires (CONICET)-Instituto de Investigaciones Científicas y Técnicas para la Defensa (CITEDEF) Edinburgh, United Kingdom 2016-09-04 https://insu.hal.science/insu-01353816 en eng HAL CCSD insu-01353816 https://insu.hal.science/insu-01353816 Quadrennial Ozone Symposium 2016 https://insu.hal.science/insu-01353816 Quadrennial Ozone Symposium 2016, Sep 2016, Edinburgh, United Kingdom [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/conferenceObject Conference poster 2016 ftecoleponts 2024-05-16T13:26:06Z International audience The latest assessment report on the state of the ozone layer (WMO 2014) confirmed the stabilization of the ozone loss in Antarctica since 2000. Several studies have been made in order to quantify the increase in total ozone column (TOC) in the Antarctic polar vortex in spring directly linked to the small decrease of ozone depleting substances levels in the polar stratosphere. These studies generally show a significant increase of TOC averaged inside the vortex since 2000 but they differ on the proxies used for the quantification of ozone interannual variability.In this study, the trend of TOC inside the vortex is analyzed over the 1980-2015 period using multilinear regression model based on various proxies (heat flux, QBO, solar flux, AAO and aerosols). The ozone trend is simulated by a piecewise linear trend (PWLT) before and after the break year in 2000, corresponding to the change of slope in ozone long-term evolution. The originality of this study is to take into account the baroclinicity of the vortex. For this, two different methods are used to classify TOC values inside the vortex as a function of Equivalent Latitude (EL). In the first standard one, the Nash criterion (Nash et al., 1996) is applied at a single isentropic level (475K or 550K). In the second one it is applied to a range of isentropic levels between 400K and 600K with a step of 25K.The study is focused on the period September 15 - October 15, the most representative of low ozone levels inside the vortex. The trend model is applied to SAOZ UV-Vis spectrometer data at Dumont d’Urville (66.7 ̊S, 140 ̊E) and also to TOMS/OMI above Antarctica and the trend results are presented for the different classification methods. Conference Object Antarc* Antarctic Antarctica École des Ponts ParisTech: HAL Antarctic The Antarctic Nash ENVELOPE(-62.350,-62.350,-74.233,-74.233) Dumont d’Urville ENVELOPE(140.000,140.000,-66.667,-66.667) |