Antarctic stratospheric ice crystals
Ice crystals were replicated over the Palmer Peninsula at approximately 72 deg S on six occasions during the 1987 Airboirne Antarctic Ozone Experiment. The sampling altitude was between 12.5 and 18.5 km (45-65 thousand ft pressure altitude) with the temperature between 190 and 201 K. The atmosphere...
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1989
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ftnasantrs:oai:casi.ntrs.nasa.gov:19900031872 2023-05-15T14:04:33+02:00 Antarctic stratospheric ice crystals Goodman, J. Toon, O. B. Pueschel, R. F. Snetsinger, K. G. Verma, S. Unclassified, Unlimited, Publicly available Nov 30, 1989 http://ntrs.nasa.gov/search.jsp?R=19900031872 unknown http://ntrs.nasa.gov/search.jsp?R=19900031872 Accession ID: 90A18927 Copyright Other Sources 46 Journal of Geophysical Research; 94; 16449-16 1989 ftnasantrs 2012-02-15T18:24:27Z Ice crystals were replicated over the Palmer Peninsula at approximately 72 deg S on six occasions during the 1987 Airboirne Antarctic Ozone Experiment. The sampling altitude was between 12.5 and 18.5 km (45-65 thousand ft pressure altitude) with the temperature between 190 and 201 K. The atmosphere was subsaturated with respect to ice in all cases. The collected crystals were predominantly solid and hollow columns. The largest crystals were sampled at lower altitudes where the potential temperature was below 400 K. While the crystals were larger than anticipated, their low concentration results in a total surface area that is less than one tenth of the total aerosol surface area. The large ice crystals may play an important role in the observed stratospheric dehydration processes through sedimentation. Evidence of scavenging of submicron particles further suggests that the ice crystals may be effective in the removal of stratospheric chemicals. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic |
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NASA Technical Reports Server (NTRS) |
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unknown |
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46 |
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46 Goodman, J. Toon, O. B. Pueschel, R. F. Snetsinger, K. G. Verma, S. Antarctic stratospheric ice crystals |
topic_facet |
46 |
description |
Ice crystals were replicated over the Palmer Peninsula at approximately 72 deg S on six occasions during the 1987 Airboirne Antarctic Ozone Experiment. The sampling altitude was between 12.5 and 18.5 km (45-65 thousand ft pressure altitude) with the temperature between 190 and 201 K. The atmosphere was subsaturated with respect to ice in all cases. The collected crystals were predominantly solid and hollow columns. The largest crystals were sampled at lower altitudes where the potential temperature was below 400 K. While the crystals were larger than anticipated, their low concentration results in a total surface area that is less than one tenth of the total aerosol surface area. The large ice crystals may play an important role in the observed stratospheric dehydration processes through sedimentation. Evidence of scavenging of submicron particles further suggests that the ice crystals may be effective in the removal of stratospheric chemicals. |
format |
Other/Unknown Material |
author |
Goodman, J. Toon, O. B. Pueschel, R. F. Snetsinger, K. G. Verma, S. |
author_facet |
Goodman, J. Toon, O. B. Pueschel, R. F. Snetsinger, K. G. Verma, S. |
author_sort |
Goodman, J. |
title |
Antarctic stratospheric ice crystals |
title_short |
Antarctic stratospheric ice crystals |
title_full |
Antarctic stratospheric ice crystals |
title_fullStr |
Antarctic stratospheric ice crystals |
title_full_unstemmed |
Antarctic stratospheric ice crystals |
title_sort |
antarctic stratospheric ice crystals |
publishDate |
1989 |
url |
http://ntrs.nasa.gov/search.jsp?R=19900031872 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19900031872 Accession ID: 90A18927 |
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Copyright |
_version_ |
1766275735629070336 |