Surface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records
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 Arcti...
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ftdoajarticles:oai:doaj.org/article:db1e06fa800a493d83af122918176934 2023-05-15T13:50:17+02:00 Surface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records D. W. Tarasick J. W. Bottenheim 2002-01-01T00:00:00Z https://doaj.org/article/db1e06fa800a493d83af122918176934 EN eng Copernicus Publications http://www.atmos-chem-phys.net/2/197/2002/acp-2-197-2002.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/db1e06fa800a493d83af122918176934 Atmospheric Chemistry and Physics, Vol 2, Iss 3, Pp 197-205 (2002) Physics QC1-999 Chemistry QD1-999 article 2002 ftdoajarticles 2022-12-31T16:06:49Z 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 related to differences in average springtime surface temperatures. The long record at Resolute shows depletions since 1966, but with an increase in their frequency over the period 1966--2000 of 0.66 ± 0.59% per year (95% confidence limits), explaining the apparent increase of Hg in Arctic biota in recent times. Article in Journal/Newspaper Antarc* Antarctic Arctic Directory of Open Access Journals: DOAJ Articles Antarctic Arctic Canada Eureka ENVELOPE(-85.940,-85.940,79.990,79.990) |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 D. W. Tarasick J. W. Bottenheim Surface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
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 related to differences in average springtime surface temperatures. The long record at Resolute shows depletions since 1966, but with an increase in their frequency over the period 1966--2000 of 0.66 ± 0.59% per year (95% confidence limits), explaining the apparent increase of Hg in Arctic biota in recent times. |
format |
Article in Journal/Newspaper |
author |
D. W. Tarasick J. W. Bottenheim |
author_facet |
D. W. Tarasick J. W. Bottenheim |
author_sort |
D. W. Tarasick |
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 |
Copernicus Publications |
publishDate |
2002 |
url |
https://doaj.org/article/db1e06fa800a493d83af122918176934 |
long_lat |
ENVELOPE(-85.940,-85.940,79.990,79.990) |
geographic |
Antarctic Arctic Canada Eureka |
geographic_facet |
Antarctic Arctic Canada Eureka |
genre |
Antarc* Antarctic Arctic |
genre_facet |
Antarc* Antarctic Arctic |
op_source |
Atmospheric Chemistry and Physics, Vol 2, Iss 3, Pp 197-205 (2002) |
op_relation |
http://www.atmos-chem-phys.net/2/197/2002/acp-2-197-2002.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/db1e06fa800a493d83af122918176934 |
_version_ |
1766253325274054656 |