Halogens and their role in polar boundary-layer ozone depletion
International audience During springtime in the polar regions, unique photochemistry converts inert halide salt ions (e.g. Br ? ) into reactive halogen species (e.g. Br atoms and BrO) that deplete ozone in the boundary layer to near zero levels. Since their discovery in the late 1980s, research on o...
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2007
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Subjects: | |
Online Access: | https://hal.science/hal-00296318 https://hal.science/hal-00296318/document https://hal.science/hal-00296318/file/acp-7-4375-2007.pdf |
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ftinsu:oai:HAL:hal-00296318v1 |
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institution |
Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Simpson, W. R. von Glasow, R. Riedel, K. Anderson, P. Ariya, P. Bottenheim, J. Burrows, J. Carpenter, L. J. Friess, U. Goodsite, M. E. Heard, D. Hutterli, M. Jacobi, H.-W. Kaleschke, L. Neff, B. Plane, J. Platt, U. Richter, A. Roscoe, H. Sander, R. Shepson, P. Sodeau, J. Steffen, A. Wagner, T. Wolff, E. Halogens and their role in polar boundary-layer ozone depletion |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience During springtime in the polar regions, unique photochemistry converts inert halide salt ions (e.g. Br ? ) into reactive halogen species (e.g. Br atoms and BrO) that deplete ozone in the boundary layer to near zero levels. Since their discovery in the late 1980s, research on ozone depletion events (ODEs) has made great advances; however many key processes remain poorly understood. In this article we review the history, chemistry, dependence on environmental conditions, and impacts of ODEs. This research has shown the central role of bromine photochemistry, but how salts are transported from the ocean and are oxidized to become reactive halogen species in the air is still not fully understood. Halogens other than bromine (chlorine and iodine) are also activated through incompletely understood mechanisms that are probably coupled to bromine chemistry. The main consequence of halogen activation is chemical destruction of ozone, which removes the primary precursor of atmospheric oxidation, and generation of reactive halogen atoms/oxides that become the primary oxidizing species. The different reactivity of halogens as compared to OH and ozone has broad impacts on atmospheric chemistry, including near complete removal and deposition of mercury, alteration of oxidation fates for organic gases, and export of bromine into the free troposphere. Recent changes in the climate of the Arctic and state of the Arctic sea ice cover are likely to have strong effects on halogen activation and ODEs; however, more research is needed to make meaningful predictions of these changes. |
author2 |
Geophysical Institute and Department of Chemistry University of Alaska Fairbanks (UAF) School of Environmental Sciences Norwich University of East Anglia Norwich (UEA) National Institute of Water and Atmospheric Research Wellington (NIWA) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) McGill University = Université McGill Montréal, Canada Environment and Climate Change Canada Institute of Environmental Physics Bremen (IUP) University of Bremen Dept. of Chemistry Institute of Environmental Physics Heidelberg (IUP) Universität Heidelberg Heidelberg = Heidelberg University University of Southern Denmark (SDU) School of Chemistry Leeds University of Leeds Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association Center for Marine and Atmospheric Research Institute of Oceanography NOAA Earth System Research Laboratory (ESRL) National Oceanic and Atmospheric Administration (NOAA) Atmospheric Chemistry Department MPIC Max Planck Institute for Chemistry (MPIC) Max-Planck-Gesellschaft-Max-Planck-Gesellschaft Purdue Climate Change Research Center Purdue University West Lafayette Department of Chemistry |
format |
Article in Journal/Newspaper |
author |
Simpson, W. R. von Glasow, R. Riedel, K. Anderson, P. Ariya, P. Bottenheim, J. Burrows, J. Carpenter, L. J. Friess, U. Goodsite, M. E. Heard, D. Hutterli, M. Jacobi, H.-W. Kaleschke, L. Neff, B. Plane, J. Platt, U. Richter, A. Roscoe, H. Sander, R. Shepson, P. Sodeau, J. Steffen, A. Wagner, T. Wolff, E. |
author_facet |
Simpson, W. R. von Glasow, R. Riedel, K. Anderson, P. Ariya, P. Bottenheim, J. Burrows, J. Carpenter, L. J. Friess, U. Goodsite, M. E. Heard, D. Hutterli, M. Jacobi, H.-W. Kaleschke, L. Neff, B. Plane, J. Platt, U. Richter, A. Roscoe, H. Sander, R. Shepson, P. Sodeau, J. Steffen, A. Wagner, T. Wolff, E. |
author_sort |
Simpson, W. R. |
title |
Halogens and their role in polar boundary-layer ozone depletion |
title_short |
Halogens and their role in polar boundary-layer ozone depletion |
title_full |
Halogens and their role in polar boundary-layer ozone depletion |
title_fullStr |
Halogens and their role in polar boundary-layer ozone depletion |
title_full_unstemmed |
Halogens and their role in polar boundary-layer ozone depletion |
title_sort |
halogens and their role in polar boundary-layer ozone depletion |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00296318 https://hal.science/hal-00296318/document https://hal.science/hal-00296318/file/acp-7-4375-2007.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00296318 Atmospheric Chemistry and Physics, 2007, 7 (16), pp.4375-4418 |
op_relation |
hal-00296318 https://hal.science/hal-00296318 https://hal.science/hal-00296318/document https://hal.science/hal-00296318/file/acp-7-4375-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1790596776290418688 |
spelling |
ftinsu:oai:HAL:hal-00296318v1 2024-02-11T10:01:03+01:00 Halogens and their role in polar boundary-layer ozone depletion Simpson, W. R. von Glasow, R. Riedel, K. Anderson, P. Ariya, P. Bottenheim, J. Burrows, J. Carpenter, L. J. Friess, U. Goodsite, M. E. Heard, D. Hutterli, M. Jacobi, H.-W. Kaleschke, L. Neff, B. Plane, J. Platt, U. Richter, A. Roscoe, H. Sander, R. Shepson, P. Sodeau, J. Steffen, A. Wagner, T. Wolff, E. Geophysical Institute and Department of Chemistry University of Alaska Fairbanks (UAF) School of Environmental Sciences Norwich University of East Anglia Norwich (UEA) National Institute of Water and Atmospheric Research Wellington (NIWA) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) McGill University = Université McGill Montréal, Canada Environment and Climate Change Canada Institute of Environmental Physics Bremen (IUP) University of Bremen Dept. of Chemistry Institute of Environmental Physics Heidelberg (IUP) Universität Heidelberg Heidelberg = Heidelberg University University of Southern Denmark (SDU) School of Chemistry Leeds University of Leeds Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association Center for Marine and Atmospheric Research Institute of Oceanography NOAA Earth System Research Laboratory (ESRL) National Oceanic and Atmospheric Administration (NOAA) Atmospheric Chemistry Department MPIC Max Planck Institute for Chemistry (MPIC) Max-Planck-Gesellschaft-Max-Planck-Gesellschaft Purdue Climate Change Research Center Purdue University West Lafayette Department of Chemistry 2007-08-22 https://hal.science/hal-00296318 https://hal.science/hal-00296318/document https://hal.science/hal-00296318/file/acp-7-4375-2007.pdf en eng HAL CCSD European Geosciences Union hal-00296318 https://hal.science/hal-00296318 https://hal.science/hal-00296318/document https://hal.science/hal-00296318/file/acp-7-4375-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00296318 Atmospheric Chemistry and Physics, 2007, 7 (16), pp.4375-4418 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2007 ftinsu 2024-01-17T17:27:37Z International audience During springtime in the polar regions, unique photochemistry converts inert halide salt ions (e.g. Br ? ) into reactive halogen species (e.g. Br atoms and BrO) that deplete ozone in the boundary layer to near zero levels. Since their discovery in the late 1980s, research on ozone depletion events (ODEs) has made great advances; however many key processes remain poorly understood. In this article we review the history, chemistry, dependence on environmental conditions, and impacts of ODEs. This research has shown the central role of bromine photochemistry, but how salts are transported from the ocean and are oxidized to become reactive halogen species in the air is still not fully understood. Halogens other than bromine (chlorine and iodine) are also activated through incompletely understood mechanisms that are probably coupled to bromine chemistry. The main consequence of halogen activation is chemical destruction of ozone, which removes the primary precursor of atmospheric oxidation, and generation of reactive halogen atoms/oxides that become the primary oxidizing species. The different reactivity of halogens as compared to OH and ozone has broad impacts on atmospheric chemistry, including near complete removal and deposition of mercury, alteration of oxidation fates for organic gases, and export of bromine into the free troposphere. Recent changes in the climate of the Arctic and state of the Arctic sea ice cover are likely to have strong effects on halogen activation and ODEs; however, more research is needed to make meaningful predictions of these changes. Article in Journal/Newspaper Arctic Sea ice Institut national des sciences de l'Univers: HAL-INSU Arctic |