Surface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records
International audience Episodes of ozone depletion in the lowermost Arctic atmosphere (0--2 km) at polar sunrise have been intensively studied at Alert, Canada, and are thought to result from catalytic reactions involving bromine. Recent observations of high concentrations of tropospheric BrO over l...
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ftinsu:oai:HAL:hal-00300828v1 2023-11-12T04:03:52+01:00 Surface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records Tarasick, D. W. Bottenheim, J. W. Environment and Climate Change Canada 2002-04-03 https://hal.science/hal-00300828 https://hal.science/hal-00300828/document https://hal.science/hal-00300828/file/acpd-2-339-2002.pdf en eng HAL CCSD European Geosciences Union hal-00300828 https://hal.science/hal-00300828 https://hal.science/hal-00300828/document https://hal.science/hal-00300828/file/acpd-2-339-2002.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00300828 Atmospheric Chemistry and Physics Discussions, 2002, 2 (2), pp.339-356 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2002 ftinsu 2023-10-25T16:27:16Z International audience Episodes of ozone depletion in the lowermost Arctic atmosphere (0--2 km) at polar sunrise have been intensively studied at Alert, Canada, and are thought to result from catalytic reactions involving bromine. Recent observations of high concentrations of tropospheric BrO over large areas of the Arctic and Antarctic suggest that such depletion events should also be seen by ozonesondes at other polar stations. An examination of historical ozonesonde records shows that such events occur frequently at Alert, Eureka and Resolute, but much less frequently at Churchill and at other stations. The differences appear to be attributable to differences in surface meteorology. The long record at Resolute shows depletions since 1966, but with an apparent increase in their frequency since about 1985. This is surprising, since the Br involved in the depletion mechanism is believed to be entirely of natural origin. Article in Journal/Newspaper Antarc* Antarctic Arctic Institut national des sciences de l'Univers: HAL-INSU Arctic Antarctic Canada Eureka ENVELOPE(-85.940,-85.940,79.990,79.990) |
institution |
Open Polar |
collection |
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 Tarasick, D. W. Bottenheim, J. W. Surface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Episodes of ozone depletion in the lowermost Arctic atmosphere (0--2 km) at polar sunrise have been intensively studied at Alert, Canada, and are thought to result from catalytic reactions involving bromine. Recent observations of high concentrations of tropospheric BrO over large areas of the Arctic and Antarctic suggest that such depletion events should also be seen by ozonesondes at other polar stations. An examination of historical ozonesonde records shows that such events occur frequently at Alert, Eureka and Resolute, but much less frequently at Churchill and at other stations. The differences appear to be attributable to differences in surface meteorology. The long record at Resolute shows depletions since 1966, but with an apparent increase in their frequency since about 1985. This is surprising, since the Br involved in the depletion mechanism is believed to be entirely of natural origin. |
author2 |
Environment and Climate Change Canada |
format |
Article in Journal/Newspaper |
author |
Tarasick, D. W. Bottenheim, J. W. |
author_facet |
Tarasick, D. W. Bottenheim, J. W. |
author_sort |
Tarasick, D. W. |
title |
Surface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records |
title_short |
Surface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records |
title_full |
Surface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records |
title_fullStr |
Surface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records |
title_full_unstemmed |
Surface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records |
title_sort |
surface ozone depletion episodes in the arctic and antarctic from historical ozonesonde records |
publisher |
HAL CCSD |
publishDate |
2002 |
url |
https://hal.science/hal-00300828 https://hal.science/hal-00300828/document https://hal.science/hal-00300828/file/acpd-2-339-2002.pdf |
long_lat |
ENVELOPE(-85.940,-85.940,79.990,79.990) |
geographic |
Arctic Antarctic Canada Eureka |
geographic_facet |
Arctic Antarctic Canada Eureka |
genre |
Antarc* Antarctic Arctic |
genre_facet |
Antarc* Antarctic Arctic |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00300828 Atmospheric Chemistry and Physics Discussions, 2002, 2 (2), pp.339-356 |
op_relation |
hal-00300828 https://hal.science/hal-00300828 https://hal.science/hal-00300828/document https://hal.science/hal-00300828/file/acpd-2-339-2002.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782339435028807680 |