Midwinter start to Antarctic ozone depletion: evidence from observations and models
Measurements of total ozone at Faraday, Antarctica (65°S), by a visible spectrometer show a winter maximum. This new observation is consistent with the descent of air within the polar vortex during early winter, together with ozone depletion starting in midwinter. Chemical depletion at these latitud...
Published in: | Science |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
American Association for the Advancement of Science
1997
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/514694/ https://doi.org/10.1126/science.278.5335.93 |
id |
ftnerc:oai:nora.nerc.ac.uk:514694 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:514694 2023-05-15T13:49:33+02:00 Midwinter start to Antarctic ozone depletion: evidence from observations and models Roscoe, H.K. Jones, A.E. Lee, A.M. 1997-10 http://nora.nerc.ac.uk/id/eprint/514694/ https://doi.org/10.1126/science.278.5335.93 unknown American Association for the Advancement of Science Roscoe, H.K.; Jones, A.E. orcid:0000-0002-2040-4841 Lee, A.M. 1997 Midwinter start to Antarctic ozone depletion: evidence from observations and models. Science, 278 (5335). 93-96. https://doi.org/10.1126/science.278.5335.93 <https://doi.org/10.1126/science.278.5335.93> Publication - Article PeerReviewed 1997 ftnerc https://doi.org/10.1126/science.278.5335.93 2023-02-04T19:43:40Z Measurements of total ozone at Faraday, Antarctica (65°S), by a visible spectrometer show a winter maximum. This new observation is consistent with the descent of air within the polar vortex during early winter, together with ozone depletion starting in midwinter. Chemical depletion at these latitudes in midwinter is suggested by existing satellite observations of enhanced chlorine monoxide and reduced ozone above 100 hectapascals and by reduced ozone in sonde profiles. New three-dimensional model calculations for 1994 confirm that chemical ozone depletion started in June at the sunlit vortex edge and became substantial by late July. This would not have been observed by most previous techniques, which either could not operate in winter or were closer to the Pole. Article in Journal/Newspaper Antarc* Antarctic Antarctica Natural Environment Research Council: NERC Open Research Archive Antarctic Midwinter ENVELOPE(139.931,139.931,-66.690,-66.690) Faraday ENVELOPE(-64.256,-64.256,-65.246,-65.246) Science 278 5335 93 96 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
Measurements of total ozone at Faraday, Antarctica (65°S), by a visible spectrometer show a winter maximum. This new observation is consistent with the descent of air within the polar vortex during early winter, together with ozone depletion starting in midwinter. Chemical depletion at these latitudes in midwinter is suggested by existing satellite observations of enhanced chlorine monoxide and reduced ozone above 100 hectapascals and by reduced ozone in sonde profiles. New three-dimensional model calculations for 1994 confirm that chemical ozone depletion started in June at the sunlit vortex edge and became substantial by late July. This would not have been observed by most previous techniques, which either could not operate in winter or were closer to the Pole. |
format |
Article in Journal/Newspaper |
author |
Roscoe, H.K. Jones, A.E. Lee, A.M. |
spellingShingle |
Roscoe, H.K. Jones, A.E. Lee, A.M. Midwinter start to Antarctic ozone depletion: evidence from observations and models |
author_facet |
Roscoe, H.K. Jones, A.E. Lee, A.M. |
author_sort |
Roscoe, H.K. |
title |
Midwinter start to Antarctic ozone depletion: evidence from observations and models |
title_short |
Midwinter start to Antarctic ozone depletion: evidence from observations and models |
title_full |
Midwinter start to Antarctic ozone depletion: evidence from observations and models |
title_fullStr |
Midwinter start to Antarctic ozone depletion: evidence from observations and models |
title_full_unstemmed |
Midwinter start to Antarctic ozone depletion: evidence from observations and models |
title_sort |
midwinter start to antarctic ozone depletion: evidence from observations and models |
publisher |
American Association for the Advancement of Science |
publishDate |
1997 |
url |
http://nora.nerc.ac.uk/id/eprint/514694/ https://doi.org/10.1126/science.278.5335.93 |
long_lat |
ENVELOPE(139.931,139.931,-66.690,-66.690) ENVELOPE(-64.256,-64.256,-65.246,-65.246) |
geographic |
Antarctic Midwinter Faraday |
geographic_facet |
Antarctic Midwinter Faraday |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
Roscoe, H.K.; Jones, A.E. orcid:0000-0002-2040-4841 Lee, A.M. 1997 Midwinter start to Antarctic ozone depletion: evidence from observations and models. Science, 278 (5335). 93-96. https://doi.org/10.1126/science.278.5335.93 <https://doi.org/10.1126/science.278.5335.93> |
op_doi |
https://doi.org/10.1126/science.278.5335.93 |
container_title |
Science |
container_volume |
278 |
container_issue |
5335 |
container_start_page |
93 |
op_container_end_page |
96 |
_version_ |
1766251560609775616 |