Ozone photochemistry in the antarctic stratosphere in summer
Abstract Ozone photochemistry over Antarctica in summer has been examined using a 1‐D model. With diffusive transport alone, the predicted ozone decay rates from the December (summer) solstice to the March (autumn) equinox were found greatly to exceed observed rates. In order to obtain broad agreeme...
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crwiley:10.1002/qj.49711147006 2024-06-02T07:57:52+00:00 Ozone photochemistry in the antarctic stratosphere in summer Farman, J. C. Murgatroyd, R. J. Silnickas, A. M. Thrush, B. A. 1985 http://dx.doi.org/10.1002/qj.49711147006 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.49711147006 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.49711147006 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Quarterly Journal of the Royal Meteorological Society volume 111, issue 470, page 1013-1025 ISSN 0035-9009 1477-870X journal-article 1985 crwiley https://doi.org/10.1002/qj.49711147006 2024-05-03T11:28:27Z Abstract Ozone photochemistry over Antarctica in summer has been examined using a 1‐D model. With diffusive transport alone, the predicted ozone decay rates from the December (summer) solstice to the March (autumn) equinox were found greatly to exceed observed rates. In order to obtain broad agreement between calculated and observed ozone amounts, it was necessary to include the effects of a slow downward mean velocity. the velocities used, a few tens of metres per day, are compatible with a Lagrangian mean circulation pattern derived from thermodynamic considerations and from GCMs. The rates of change of ozone amounts computed for 75°S decrease abruptly following the change from continuous to interrupted photolysis when the sun first sets (in mid‐February) after the long polar day of midsummer. In the polar day regime, N 2 O 5 concentrations are depressed strongly, and CIONO 2 concentrations moderately, relative to those in regions subjected to diurnal interruption of photolysis. the effects on the diurnal variations of ozone and other minor constituents are described. Article in Journal/Newspaper Antarc* Antarctic Antarctica Wiley Online Library Antarctic The Antarctic Quarterly Journal of the Royal Meteorological Society 111 470 1013 1025 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Ozone photochemistry over Antarctica in summer has been examined using a 1‐D model. With diffusive transport alone, the predicted ozone decay rates from the December (summer) solstice to the March (autumn) equinox were found greatly to exceed observed rates. In order to obtain broad agreement between calculated and observed ozone amounts, it was necessary to include the effects of a slow downward mean velocity. the velocities used, a few tens of metres per day, are compatible with a Lagrangian mean circulation pattern derived from thermodynamic considerations and from GCMs. The rates of change of ozone amounts computed for 75°S decrease abruptly following the change from continuous to interrupted photolysis when the sun first sets (in mid‐February) after the long polar day of midsummer. In the polar day regime, N 2 O 5 concentrations are depressed strongly, and CIONO 2 concentrations moderately, relative to those in regions subjected to diurnal interruption of photolysis. the effects on the diurnal variations of ozone and other minor constituents are described. |
format |
Article in Journal/Newspaper |
author |
Farman, J. C. Murgatroyd, R. J. Silnickas, A. M. Thrush, B. A. |
spellingShingle |
Farman, J. C. Murgatroyd, R. J. Silnickas, A. M. Thrush, B. A. Ozone photochemistry in the antarctic stratosphere in summer |
author_facet |
Farman, J. C. Murgatroyd, R. J. Silnickas, A. M. Thrush, B. A. |
author_sort |
Farman, J. C. |
title |
Ozone photochemistry in the antarctic stratosphere in summer |
title_short |
Ozone photochemistry in the antarctic stratosphere in summer |
title_full |
Ozone photochemistry in the antarctic stratosphere in summer |
title_fullStr |
Ozone photochemistry in the antarctic stratosphere in summer |
title_full_unstemmed |
Ozone photochemistry in the antarctic stratosphere in summer |
title_sort |
ozone photochemistry in the antarctic stratosphere in summer |
publisher |
Wiley |
publishDate |
1985 |
url |
http://dx.doi.org/10.1002/qj.49711147006 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.49711147006 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.49711147006 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Quarterly Journal of the Royal Meteorological Society volume 111, issue 470, page 1013-1025 ISSN 0035-9009 1477-870X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/qj.49711147006 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
111 |
container_issue |
470 |
container_start_page |
1013 |
op_container_end_page |
1025 |
_version_ |
1800741084773482496 |