Lidar measurement of stratospheric aerosol at Syowa Station, Antarctica
Lidar measurement on Antarctic aerosols were made during the Antarctic Middle Atmosphere (AMA) period, 1983 to 1985, at Syowa Station. Topics measured are winter enhancement aerosol layer and volcanic effect of El Chichon on the Antarctic stratosphere aerosols. The large depolarization ratio (maximu...
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1986
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ftnasantrs:oai:casi.ntrs.nasa.gov:19870000881 2023-05-15T13:53:27+02:00 Lidar measurement of stratospheric aerosol at Syowa Station, Antarctica Ono, T. Fukunishi, H. Nomura, A. Hirasawa, T. Iwasaka, Y. Unclassified, Unlimited, Publicly available Aug 1, 1986 application/pdf http://hdl.handle.net/2060/19870000881 unknown Document ID: 19870000881 Accession ID: 87N10314 http://hdl.handle.net/2060/19870000881 No Copyright CASI GEOPHYSICS NASA. Langley Research Center 13th International Laser Radar Conference; 4 p 1986 ftnasantrs 2016-06-11T22:51:55Z Lidar measurement on Antarctic aerosols were made during the Antarctic Middle Atmosphere (AMA) period, 1983 to 1985, at Syowa Station. Topics measured are winter enhancement aerosol layer and volcanic effect of El Chichon on the Antarctic stratosphere aerosols. The large depolarization ratio (maximum value was about 0.8) seems to support sublimation growth of ice crystals. The lidar measurements showed a meaningful time lag between aerosol content increase and depolarization ratio increase. Considering the balloon observations made in early winter, it was speculated that an increase in large particle number concentration also contributed to the winter enhancement. The El Chichon cloud spread to the Antarctic region by the beginning of 1983. The temporal change of integrated backscatter coefficient shows a clear decay pattern, although strong winter enhancement superposes. Other/Unknown Material Antarc* Antarctic Antarctica NASA Technical Reports Server (NTRS) Antarctic Syowa Station The Antarctic |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
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topic |
GEOPHYSICS |
spellingShingle |
GEOPHYSICS Ono, T. Fukunishi, H. Nomura, A. Hirasawa, T. Iwasaka, Y. Lidar measurement of stratospheric aerosol at Syowa Station, Antarctica |
topic_facet |
GEOPHYSICS |
description |
Lidar measurement on Antarctic aerosols were made during the Antarctic Middle Atmosphere (AMA) period, 1983 to 1985, at Syowa Station. Topics measured are winter enhancement aerosol layer and volcanic effect of El Chichon on the Antarctic stratosphere aerosols. The large depolarization ratio (maximum value was about 0.8) seems to support sublimation growth of ice crystals. The lidar measurements showed a meaningful time lag between aerosol content increase and depolarization ratio increase. Considering the balloon observations made in early winter, it was speculated that an increase in large particle number concentration also contributed to the winter enhancement. The El Chichon cloud spread to the Antarctic region by the beginning of 1983. The temporal change of integrated backscatter coefficient shows a clear decay pattern, although strong winter enhancement superposes. |
format |
Other/Unknown Material |
author |
Ono, T. Fukunishi, H. Nomura, A. Hirasawa, T. Iwasaka, Y. |
author_facet |
Ono, T. Fukunishi, H. Nomura, A. Hirasawa, T. Iwasaka, Y. |
author_sort |
Ono, T. |
title |
Lidar measurement of stratospheric aerosol at Syowa Station, Antarctica |
title_short |
Lidar measurement of stratospheric aerosol at Syowa Station, Antarctica |
title_full |
Lidar measurement of stratospheric aerosol at Syowa Station, Antarctica |
title_fullStr |
Lidar measurement of stratospheric aerosol at Syowa Station, Antarctica |
title_full_unstemmed |
Lidar measurement of stratospheric aerosol at Syowa Station, Antarctica |
title_sort |
lidar measurement of stratospheric aerosol at syowa station, antarctica |
publishDate |
1986 |
url |
http://hdl.handle.net/2060/19870000881 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic Syowa Station The Antarctic |
geographic_facet |
Antarctic Syowa Station The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
CASI |
op_relation |
Document ID: 19870000881 Accession ID: 87N10314 http://hdl.handle.net/2060/19870000881 |
op_rights |
No Copyright |
_version_ |
1766258548504788992 |