The interannual variability of polar stratospheric clouds and related parameters in Antarctica during September and October
Antarctic polar stratospheric cloud (PSC) sightings by the orbiting SAM II sensor during September and October show a pronounced quasi-biennial oscillation (QBO) signal, and October sightings have increased markedly over the past 10 years in years of westerly QBO phase. The QBO in PSC frequency is l...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19900036085 2023-05-15T14:04:33+02:00 The interannual variability of polar stratospheric clouds and related parameters in Antarctica during September and October Poole, Lamont R. Mccormick, M. Patrick Solomon, Susan Pitts, Michael C. Unclassified, Unlimited, Publicly available Oct 1, 1989 http://ntrs.nasa.gov/search.jsp?R=19900036085 unknown http://ntrs.nasa.gov/search.jsp?R=19900036085 Accession ID: 90A23140 Copyright Other Sources 46 Geophysical Research Letters; 16; 1157-116 1989 ftnasantrs 2012-02-15T18:26:05Z Antarctic polar stratospheric cloud (PSC) sightings by the orbiting SAM II sensor during September and October show a pronounced quasi-biennial oscillation (QBO) signal, and October sightings have increased markedly over the past 10 years in years of westerly QBO phase. The QBO in PSC frequency is likely to affect the rate of Antarctic heterogeneous chemical processes and, hence, ozone depletion. Studies of the observed long-term temperature trend suggest that the decadal PSC trend probably results from the ozone decline, through its effect on stratospheric heating rates. A more detailed analysis of data from 1986 to 1987 shows that there were more PSCs in 1987, and that they persisted much later into the spring season as compared to 1986. Qualitatively similar behavior was found for the OClO column abundances and 18-km ozone depletion observed at McMurdo Station during these 2 years. These observations suggest that both the intensity and duration of heterogeneous chemical processes are likely greater during colder OBQ-westerly phase years. Other/Unknown Material Antarc* Antarctic Antarctica NASA Technical Reports Server (NTRS) Antarctic McMurdo Station ENVELOPE(166.667,166.667,-77.850,-77.850) |
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NASA Technical Reports Server (NTRS) |
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unknown |
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46 |
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46 Poole, Lamont R. Mccormick, M. Patrick Solomon, Susan Pitts, Michael C. The interannual variability of polar stratospheric clouds and related parameters in Antarctica during September and October |
topic_facet |
46 |
description |
Antarctic polar stratospheric cloud (PSC) sightings by the orbiting SAM II sensor during September and October show a pronounced quasi-biennial oscillation (QBO) signal, and October sightings have increased markedly over the past 10 years in years of westerly QBO phase. The QBO in PSC frequency is likely to affect the rate of Antarctic heterogeneous chemical processes and, hence, ozone depletion. Studies of the observed long-term temperature trend suggest that the decadal PSC trend probably results from the ozone decline, through its effect on stratospheric heating rates. A more detailed analysis of data from 1986 to 1987 shows that there were more PSCs in 1987, and that they persisted much later into the spring season as compared to 1986. Qualitatively similar behavior was found for the OClO column abundances and 18-km ozone depletion observed at McMurdo Station during these 2 years. These observations suggest that both the intensity and duration of heterogeneous chemical processes are likely greater during colder OBQ-westerly phase years. |
format |
Other/Unknown Material |
author |
Poole, Lamont R. Mccormick, M. Patrick Solomon, Susan Pitts, Michael C. |
author_facet |
Poole, Lamont R. Mccormick, M. Patrick Solomon, Susan Pitts, Michael C. |
author_sort |
Poole, Lamont R. |
title |
The interannual variability of polar stratospheric clouds and related parameters in Antarctica during September and October |
title_short |
The interannual variability of polar stratospheric clouds and related parameters in Antarctica during September and October |
title_full |
The interannual variability of polar stratospheric clouds and related parameters in Antarctica during September and October |
title_fullStr |
The interannual variability of polar stratospheric clouds and related parameters in Antarctica during September and October |
title_full_unstemmed |
The interannual variability of polar stratospheric clouds and related parameters in Antarctica during September and October |
title_sort |
interannual variability of polar stratospheric clouds and related parameters in antarctica during september and october |
publishDate |
1989 |
url |
http://ntrs.nasa.gov/search.jsp?R=19900036085 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(166.667,166.667,-77.850,-77.850) |
geographic |
Antarctic McMurdo Station |
geographic_facet |
Antarctic McMurdo Station |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19900036085 Accession ID: 90A23140 |
op_rights |
Copyright |
_version_ |
1766275742574837760 |