Atmospheric trends of the halon gases from polar firn air
International audience Four halons (H-1301, H-1211, H-2402 and H-1202) have been measured in air samples collected from polar firn from Dome Concordia (Dome C), Antarctica, from Devon Island, Canada and the North Greenland Ice Core Project (NGRIP) site, Greenland. H-2402 and H-1202 are reported for...
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2005
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Online Access: | https://hal.archives-ouvertes.fr/hal-00327828 https://hal.archives-ouvertes.fr/hal-00327828/document https://hal.archives-ouvertes.fr/hal-00327828/file/acpd-5-937-2005.pdf |
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ftccsdartic:oai:HAL:hal-00327828v1 |
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record_format |
openpolar |
institution |
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 Reeves, C. E. Sturges, W. T. Sturrock, G. A. Preston, K. Oram, D. E. Schwander, J. Mulvaney, R. Barnola, J.-M. Chappellez, J. Atmospheric trends of the halon gases from polar firn air |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Four halons (H-1301, H-1211, H-2402 and H-1202) have been measured in air samples collected from polar firn from Dome Concordia (Dome C), Antarctica, from Devon Island, Canada and the North Greenland Ice Core Project (NGRIP) site, Greenland. H-2402 and H-1202 are reported for the first time in firn air. The depth profiles show the concentrations of all four halons to be zero at the base of the firn thus demonstrating their entirely anthropogenic origin. This is the first evidence of this for H-2402 and H-1202. A 2-D atmospheric model was run to produce historical trends in the atmospheric concentrations at the firn sites, which were then input into a firn diffusion model to produce concentration depth profiles for comparison with the measurements. The firn measurements provide constraints on the atmospheric concentrations in both hemispheres which allow the global emission rates and their latitudinal distribution in the atmospheric model to be evaluated. Global emission trends previously determined from measurements at Cape Grim are found to be consistent with the firn data. Further emissions of H-1202 in recent years (late 1980s onwards) are likely to have come from latitudes mostly south of 40° N, but emissions prior to that may have come from further north. Emissions of H-1211 may also have shifted to latitudes south of 40° N during the late 1980s. The firn data is used to derive atmospheric trends in total organic bromine in the form of halons for both polar regions. |
author2 |
School of Environmental Sciences Norwich University of East Anglia Norwich (UEA) Physics Institute British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Reeves, C. E. Sturges, W. T. Sturrock, G. A. Preston, K. Oram, D. E. Schwander, J. Mulvaney, R. Barnola, J.-M. Chappellez, J. |
author_facet |
Reeves, C. E. Sturges, W. T. Sturrock, G. A. Preston, K. Oram, D. E. Schwander, J. Mulvaney, R. Barnola, J.-M. Chappellez, J. |
author_sort |
Reeves, C. E. |
title |
Atmospheric trends of the halon gases from polar firn air |
title_short |
Atmospheric trends of the halon gases from polar firn air |
title_full |
Atmospheric trends of the halon gases from polar firn air |
title_fullStr |
Atmospheric trends of the halon gases from polar firn air |
title_full_unstemmed |
Atmospheric trends of the halon gases from polar firn air |
title_sort |
atmospheric trends of the halon gases from polar firn air |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.archives-ouvertes.fr/hal-00327828 https://hal.archives-ouvertes.fr/hal-00327828/document https://hal.archives-ouvertes.fr/hal-00327828/file/acpd-5-937-2005.pdf |
long_lat |
ENVELOPE(-88.000,-88.000,75.252,75.252) ENVELOPE(-64.486,-64.486,-65.379,-65.379) |
geographic |
Canada Devon Island Greenland Grim |
geographic_facet |
Canada Devon Island Greenland Grim |
genre |
Antarc* Antarctica Devon Island Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project |
genre_facet |
Antarc* Antarctica Devon Island Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.archives-ouvertes.fr/hal-00327828 Atmospheric Chemistry and Physics Discussions, European Geosciences Union, 2005, 5 (1), pp.937-960 |
op_relation |
hal-00327828 https://hal.archives-ouvertes.fr/hal-00327828 https://hal.archives-ouvertes.fr/hal-00327828/document https://hal.archives-ouvertes.fr/hal-00327828/file/acpd-5-937-2005.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766255330705014784 |
spelling |
ftccsdartic:oai:HAL:hal-00327828v1 2023-05-15T13:51:27+02:00 Atmospheric trends of the halon gases from polar firn air Reeves, C. E. Sturges, W. T. Sturrock, G. A. Preston, K. Oram, D. E. Schwander, J. Mulvaney, R. Barnola, J.-M. Chappellez, J. School of Environmental Sciences Norwich University of East Anglia Norwich (UEA) Physics Institute British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) 2005-02-18 https://hal.archives-ouvertes.fr/hal-00327828 https://hal.archives-ouvertes.fr/hal-00327828/document https://hal.archives-ouvertes.fr/hal-00327828/file/acpd-5-937-2005.pdf en eng HAL CCSD European Geosciences Union hal-00327828 https://hal.archives-ouvertes.fr/hal-00327828 https://hal.archives-ouvertes.fr/hal-00327828/document https://hal.archives-ouvertes.fr/hal-00327828/file/acpd-5-937-2005.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.archives-ouvertes.fr/hal-00327828 Atmospheric Chemistry and Physics Discussions, European Geosciences Union, 2005, 5 (1), pp.937-960 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2005 ftccsdartic 2021-10-24T20:43:42Z International audience Four halons (H-1301, H-1211, H-2402 and H-1202) have been measured in air samples collected from polar firn from Dome Concordia (Dome C), Antarctica, from Devon Island, Canada and the North Greenland Ice Core Project (NGRIP) site, Greenland. H-2402 and H-1202 are reported for the first time in firn air. The depth profiles show the concentrations of all four halons to be zero at the base of the firn thus demonstrating their entirely anthropogenic origin. This is the first evidence of this for H-2402 and H-1202. A 2-D atmospheric model was run to produce historical trends in the atmospheric concentrations at the firn sites, which were then input into a firn diffusion model to produce concentration depth profiles for comparison with the measurements. The firn measurements provide constraints on the atmospheric concentrations in both hemispheres which allow the global emission rates and their latitudinal distribution in the atmospheric model to be evaluated. Global emission trends previously determined from measurements at Cape Grim are found to be consistent with the firn data. Further emissions of H-1202 in recent years (late 1980s onwards) are likely to have come from latitudes mostly south of 40° N, but emissions prior to that may have come from further north. Emissions of H-1211 may also have shifted to latitudes south of 40° N during the late 1980s. The firn data is used to derive atmospheric trends in total organic bromine in the form of halons for both polar regions. Article in Journal/Newspaper Antarc* Antarctica Devon Island Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Canada Devon Island ENVELOPE(-88.000,-88.000,75.252,75.252) Greenland Grim ENVELOPE(-64.486,-64.486,-65.379,-65.379) |