The impact of mid-latitude intrusions into the polar vortex on ozone loss estimates
International audience Current stratospheric chemical model simulations underestimate substantially the large ozone loss rates that are derived for the Arctic from ozone sondes for January of some years. Until now, no explanation for this discrepancy has been found. Here, we examine the influence of...
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ftccsdartic:oai:HAL:hal-00301024v1 2023-05-15T15:05:57+02:00 The impact of mid-latitude intrusions into the polar vortex on ozone loss estimates Grooß, J.-U. Müller, R. Institut für Chemie und Dynamik der Geosphäre - Stratosphäre (ICG-1) Forschungszentrum Jülich GmbH Helmholtz-Gemeinschaft = Helmholtz Association-Helmholtz-Gemeinschaft = Helmholtz Association 2002-12-16 https://hal.archives-ouvertes.fr/hal-00301024 https://hal.archives-ouvertes.fr/hal-00301024/document https://hal.archives-ouvertes.fr/hal-00301024/file/acpd-2-2489-2002.pdf en eng HAL CCSD European Geosciences Union hal-00301024 https://hal.archives-ouvertes.fr/hal-00301024 https://hal.archives-ouvertes.fr/hal-00301024/document https://hal.archives-ouvertes.fr/hal-00301024/file/acpd-2-2489-2002.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.archives-ouvertes.fr/hal-00301024 Atmospheric Chemistry and Physics Discussions, European Geosciences Union, 2002, 2 (6), pp.2489-2506 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2002 ftccsdartic 2021-12-19T04:10:59Z International audience Current stratospheric chemical model simulations underestimate substantially the large ozone loss rates that are derived for the Arctic from ozone sondes for January of some years. Until now, no explanation for this discrepancy has been found. Here, we examine the influence of intrusions of mid-latitude air into the polar vortex on these ozone loss estimates. This study focuses on the winter 1991/92. It is based on simulations performed with the Chemical Lagrangian Model of the Stratosphere (CLaMS). The simulations for January 1992 show that the intrusions induce a reduction of vortex average ozone mixing ratio corresponding to a systematic offset of the ozone loss rate of about 12 ppb per day. Further, the results of the Match method are influenced by the intrusions, since the intruded air masses are deformed and reach dimensions below the Match radius. From our calculations we deduce a systematic offset of the Match ozone loss rate by about 10 ppb/day, which may explain about 28% of the published discrepancy between Match and box model simulations for the winter 1991/92. Article in Journal/Newspaper Arctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Grooß, J.-U. Müller, R. The impact of mid-latitude intrusions into the polar vortex on ozone loss estimates |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Current stratospheric chemical model simulations underestimate substantially the large ozone loss rates that are derived for the Arctic from ozone sondes for January of some years. Until now, no explanation for this discrepancy has been found. Here, we examine the influence of intrusions of mid-latitude air into the polar vortex on these ozone loss estimates. This study focuses on the winter 1991/92. It is based on simulations performed with the Chemical Lagrangian Model of the Stratosphere (CLaMS). The simulations for January 1992 show that the intrusions induce a reduction of vortex average ozone mixing ratio corresponding to a systematic offset of the ozone loss rate of about 12 ppb per day. Further, the results of the Match method are influenced by the intrusions, since the intruded air masses are deformed and reach dimensions below the Match radius. From our calculations we deduce a systematic offset of the Match ozone loss rate by about 10 ppb/day, which may explain about 28% of the published discrepancy between Match and box model simulations for the winter 1991/92. |
author2 |
Institut für Chemie und Dynamik der Geosphäre - Stratosphäre (ICG-1) Forschungszentrum Jülich GmbH Helmholtz-Gemeinschaft = Helmholtz Association-Helmholtz-Gemeinschaft = Helmholtz Association |
format |
Article in Journal/Newspaper |
author |
Grooß, J.-U. Müller, R. |
author_facet |
Grooß, J.-U. Müller, R. |
author_sort |
Grooß, J.-U. |
title |
The impact of mid-latitude intrusions into the polar vortex on ozone loss estimates |
title_short |
The impact of mid-latitude intrusions into the polar vortex on ozone loss estimates |
title_full |
The impact of mid-latitude intrusions into the polar vortex on ozone loss estimates |
title_fullStr |
The impact of mid-latitude intrusions into the polar vortex on ozone loss estimates |
title_full_unstemmed |
The impact of mid-latitude intrusions into the polar vortex on ozone loss estimates |
title_sort |
impact of mid-latitude intrusions into the polar vortex on ozone loss estimates |
publisher |
HAL CCSD |
publishDate |
2002 |
url |
https://hal.archives-ouvertes.fr/hal-00301024 https://hal.archives-ouvertes.fr/hal-00301024/document https://hal.archives-ouvertes.fr/hal-00301024/file/acpd-2-2489-2002.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.archives-ouvertes.fr/hal-00301024 Atmospheric Chemistry and Physics Discussions, European Geosciences Union, 2002, 2 (6), pp.2489-2506 |
op_relation |
hal-00301024 https://hal.archives-ouvertes.fr/hal-00301024 https://hal.archives-ouvertes.fr/hal-00301024/document https://hal.archives-ouvertes.fr/hal-00301024/file/acpd-2-2489-2002.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766337628391604224 |