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...
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1997
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craaas:10.1126/science.278.5335.93 2023-10-29T02:32:08+01:00 Midwinter Start to Antarctic Ozone Depletion: Evidence from Observations and Models Roscoe, H. K. Jones, A. E. Lee, A. M. 1997 http://dx.doi.org/10.1126/science.278.5335.93 https://syndication.highwire.org/content/doi/10.1126/science.278.5335.93 en eng American Association for the Advancement of Science (AAAS) Science volume 278, issue 5335, page 93-96 ISSN 0036-8075 1095-9203 Multidisciplinary journal-article 1997 craaas https://doi.org/10.1126/science.278.5335.93 2023-09-29T14:39:07Z 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 AAAS Resource Center (American Association for the Advancement of Science - via Crossref) Science 278 5335 93 96 |
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AAAS Resource Center (American Association for the Advancement of Science - via Crossref) |
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English |
topic |
Multidisciplinary |
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Multidisciplinary Roscoe, H. K. Jones, A. E. Lee, A. M. Midwinter Start to Antarctic Ozone Depletion: Evidence from Observations and Models |
topic_facet |
Multidisciplinary |
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. |
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 (AAAS) |
publishDate |
1997 |
url |
http://dx.doi.org/10.1126/science.278.5335.93 https://syndication.highwire.org/content/doi/10.1126/science.278.5335.93 |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Science volume 278, issue 5335, page 93-96 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.278.5335.93 |
container_title |
Science |
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278 |
container_issue |
5335 |
container_start_page |
93 |
op_container_end_page |
96 |
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1781053241453182976 |