The unusual persistence of an ozone hole over a southern mid-latitude station during the Antarctic spring 2009: A multi-instrument study
Record-low ozone column densities (with a minimum of 212 DU) persisted over three weeks at the Río Gallegos NDACC (Network for the Detection of Atmospheric Composition Change) station (51.5° S, 69.3° W) in November 2009. Total ozone remained two standard deviations below the climatological mean for...
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ftconicet:oai:ri.conicet.gov.ar:11336/81846 2023-10-09T21:45:50+02:00 The unusual persistence of an ozone hole over a southern mid-latitude station during the Antarctic spring 2009: A multi-instrument study Wolfram, Elian Augusto Salvador, Jacobo Omar Orte, Pablo Facundo D'elia, Raul Luis Godin Beekmann, S. Kuttippurath, J. Pazmiño, A. Goutail, F. Casiccia, C. Zamorano, F. Paes Leme, N. Quel, Eduardo Jaime application/pdf http://hdl.handle.net/11336/81846 eng eng Copernicus Publications info:eu-repo/semantics/altIdentifier/doi/10.5194/angeo-30-1435-2012 info:eu-repo/semantics/altIdentifier/url/https://www.ann-geophys.net/30/1435/2012/ http://hdl.handle.net/11336/81846 Wolfram, Elian Augusto; Salvador, Jacobo Omar; Orte, Pablo Facundo; D'elia, Raul Luis; Godin Beekmann, S.; et al.; The unusual persistence of an ozone hole over a southern mid-latitude station during the Antarctic spring 2009: A multi-instrument study; Copernicus Publications; Annales Geophysicae; 30; 10; 7-2012; 1435-1449 0992-7689 1432-0576 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ATMOSPHERIC COMPOSITION AND STRUCTURE (MIDDLE ATMOSPHERE - COMPOSITION AND CHEMISTRY) https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.5194/angeo-30-1435-2012 2023-09-24T19:36:03Z Record-low ozone column densities (with a minimum of 212 DU) persisted over three weeks at the Río Gallegos NDACC (Network for the Detection of Atmospheric Composition Change) station (51.5° S, 69.3° W) in November 2009. Total ozone remained two standard deviations below the climatological mean for five consecutive days during this period. The statistical analysis of 30 years of satellite data from the Multi Sensor Reanalysis (MSR) database for Río Gallegos revealed that such a long-lasting low-ozone episode is a rare occurrence. The event is examined using height-resolved ozone lidar measurements at Río Gallegos, and observations from satellite and groundbased instruments. The computed relative difference between the measured total ozone and the climatological monthly mean shows reductions varying between 10 and 30% with an average decrease of 25 %. The mean absolute difference of total ozone column with respect to climatological monthly mean ozone column is around 75 DU. Extreme values of the UV index (UVI) were measured at the ground for this period, with the daily maximum UVI of around 13 on 15 and 28 November. The high-resolution MIMOSACHIM (Modélisation Isentrope du transport Méso-échelle de l'Ozone Stratosphérique par Advection) model was used to interpret the ozone depletion event. An ozone decrease of about 2 ppmv was observed in mid-November at the 550K isentropic level (~22 km). The position of Río Gallegos relative to the polar vortex was classified using equivalent latitude maps. During the second week of November, the vortex was over the station at all isentropic levels, but after 20 November and until the end of the month, only the 10 lower levels in the stratosphere were affected by vortex overpasses with ozone poor air masses. A rapid recovery of the ozone column density was observed later, due to an ozone rich filament moving over Río Gallegos between 18 and 24 km in the first two weeks of December 2009. Fil: Wolfram, Elian Augusto. Consejo Nacional de Investigaciones Científicas y Técnicas. ... Article in Journal/Newspaper Antarc* Antarctic CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic The Antarctic Augusto ENVELOPE(-61.613,-61.613,-64.054,-64.054) Gallegos ENVELOPE(-67.150,-67.150,-68.133,-68.133) Annales Geophysicae 30 10 1435 1449 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ATMOSPHERIC COMPOSITION AND STRUCTURE (MIDDLE ATMOSPHERE - COMPOSITION AND CHEMISTRY) https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
ATMOSPHERIC COMPOSITION AND STRUCTURE (MIDDLE ATMOSPHERE - COMPOSITION AND CHEMISTRY) https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Wolfram, Elian Augusto Salvador, Jacobo Omar Orte, Pablo Facundo D'elia, Raul Luis Godin Beekmann, S. Kuttippurath, J. Pazmiño, A. Goutail, F. Casiccia, C. Zamorano, F. Paes Leme, N. Quel, Eduardo Jaime The unusual persistence of an ozone hole over a southern mid-latitude station during the Antarctic spring 2009: A multi-instrument study |
topic_facet |
ATMOSPHERIC COMPOSITION AND STRUCTURE (MIDDLE ATMOSPHERE - COMPOSITION AND CHEMISTRY) https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
Record-low ozone column densities (with a minimum of 212 DU) persisted over three weeks at the Río Gallegos NDACC (Network for the Detection of Atmospheric Composition Change) station (51.5° S, 69.3° W) in November 2009. Total ozone remained two standard deviations below the climatological mean for five consecutive days during this period. The statistical analysis of 30 years of satellite data from the Multi Sensor Reanalysis (MSR) database for Río Gallegos revealed that such a long-lasting low-ozone episode is a rare occurrence. The event is examined using height-resolved ozone lidar measurements at Río Gallegos, and observations from satellite and groundbased instruments. The computed relative difference between the measured total ozone and the climatological monthly mean shows reductions varying between 10 and 30% with an average decrease of 25 %. The mean absolute difference of total ozone column with respect to climatological monthly mean ozone column is around 75 DU. Extreme values of the UV index (UVI) were measured at the ground for this period, with the daily maximum UVI of around 13 on 15 and 28 November. The high-resolution MIMOSACHIM (Modélisation Isentrope du transport Méso-échelle de l'Ozone Stratosphérique par Advection) model was used to interpret the ozone depletion event. An ozone decrease of about 2 ppmv was observed in mid-November at the 550K isentropic level (~22 km). The position of Río Gallegos relative to the polar vortex was classified using equivalent latitude maps. During the second week of November, the vortex was over the station at all isentropic levels, but after 20 November and until the end of the month, only the 10 lower levels in the stratosphere were affected by vortex overpasses with ozone poor air masses. A rapid recovery of the ozone column density was observed later, due to an ozone rich filament moving over Río Gallegos between 18 and 24 km in the first two weeks of December 2009. Fil: Wolfram, Elian Augusto. Consejo Nacional de Investigaciones Científicas y Técnicas. ... |
format |
Article in Journal/Newspaper |
author |
Wolfram, Elian Augusto Salvador, Jacobo Omar Orte, Pablo Facundo D'elia, Raul Luis Godin Beekmann, S. Kuttippurath, J. Pazmiño, A. Goutail, F. Casiccia, C. Zamorano, F. Paes Leme, N. Quel, Eduardo Jaime |
author_facet |
Wolfram, Elian Augusto Salvador, Jacobo Omar Orte, Pablo Facundo D'elia, Raul Luis Godin Beekmann, S. Kuttippurath, J. Pazmiño, A. Goutail, F. Casiccia, C. Zamorano, F. Paes Leme, N. Quel, Eduardo Jaime |
author_sort |
Wolfram, Elian Augusto |
title |
The unusual persistence of an ozone hole over a southern mid-latitude station during the Antarctic spring 2009: A multi-instrument study |
title_short |
The unusual persistence of an ozone hole over a southern mid-latitude station during the Antarctic spring 2009: A multi-instrument study |
title_full |
The unusual persistence of an ozone hole over a southern mid-latitude station during the Antarctic spring 2009: A multi-instrument study |
title_fullStr |
The unusual persistence of an ozone hole over a southern mid-latitude station during the Antarctic spring 2009: A multi-instrument study |
title_full_unstemmed |
The unusual persistence of an ozone hole over a southern mid-latitude station during the Antarctic spring 2009: A multi-instrument study |
title_sort |
unusual persistence of an ozone hole over a southern mid-latitude station during the antarctic spring 2009: a multi-instrument study |
publisher |
Copernicus Publications |
url |
http://hdl.handle.net/11336/81846 |
long_lat |
ENVELOPE(-61.613,-61.613,-64.054,-64.054) ENVELOPE(-67.150,-67.150,-68.133,-68.133) |
geographic |
Antarctic The Antarctic Augusto Gallegos |
geographic_facet |
Antarctic The Antarctic Augusto Gallegos |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/angeo-30-1435-2012 info:eu-repo/semantics/altIdentifier/url/https://www.ann-geophys.net/30/1435/2012/ http://hdl.handle.net/11336/81846 Wolfram, Elian Augusto; Salvador, Jacobo Omar; Orte, Pablo Facundo; D'elia, Raul Luis; Godin Beekmann, S.; et al.; The unusual persistence of an ozone hole over a southern mid-latitude station during the Antarctic spring 2009: A multi-instrument study; Copernicus Publications; Annales Geophysicae; 30; 10; 7-2012; 1435-1449 0992-7689 1432-0576 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.5194/angeo-30-1435-2012 |
container_title |
Annales Geophysicae |
container_volume |
30 |
container_issue |
10 |
container_start_page |
1435 |
op_container_end_page |
1449 |
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1779321482096148480 |