Geosat altimeter observations of the surface circulation of the Southern Ocean
Using Geosat altimeter data for 26 months from November 1986 to December 1988 and a newly developed technique for the analysis of height data, the variability of the sea level and the surface geostrophic currents in the Southern Ocean is investigated. The processed Geosat data are used to examine th...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19910028109 2023-05-15T18:24:24+02:00 Geosat altimeter observations of the surface circulation of the Southern Ocean Chelton, Dudley B. Schlax, Michael G. Witter, Donna L. Richman, James G. Unclassified, Unlimited, Publicly available Oct 15, 1990 http://ntrs.nasa.gov/search.jsp?R=19910028109 unknown http://ntrs.nasa.gov/search.jsp?R=19910028109 Accession ID: 91A12732 Copyright Other Sources 48 Journal of Geophysical Research; 95; 17877-17 1990 ftnasantrs 2012-02-15T18:53:32Z Using Geosat altimeter data for 26 months from November 1986 to December 1988 and a newly developed technique for the analysis of height data, the variability of the sea level and the surface geostrophic currents in the Southern Ocean is investigated. The processed Geosat data are used to examine the relationship between the mesoscale variability and the values of mean circulation, determined from historical hydrographic data. It is shown that the geographical patterns of both the mean flow and the mesoscale variability are correlated. An efficient objective-analysis algorithm for generating smoothed fields from observations randomly distributed in time and two space dimensions is developed and applied to 26 months of Geosat data. The smoothed fields are then used to investigate the large-scale low-frequency variability of the sea level and the surface geostrophic velocity in the Southern Ocean, in order to identify the mode of the observed variations. Other/Unknown Material Southern Ocean NASA Technical Reports Server (NTRS) Southern Ocean |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
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48 |
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48 Chelton, Dudley B. Schlax, Michael G. Witter, Donna L. Richman, James G. Geosat altimeter observations of the surface circulation of the Southern Ocean |
topic_facet |
48 |
description |
Using Geosat altimeter data for 26 months from November 1986 to December 1988 and a newly developed technique for the analysis of height data, the variability of the sea level and the surface geostrophic currents in the Southern Ocean is investigated. The processed Geosat data are used to examine the relationship between the mesoscale variability and the values of mean circulation, determined from historical hydrographic data. It is shown that the geographical patterns of both the mean flow and the mesoscale variability are correlated. An efficient objective-analysis algorithm for generating smoothed fields from observations randomly distributed in time and two space dimensions is developed and applied to 26 months of Geosat data. The smoothed fields are then used to investigate the large-scale low-frequency variability of the sea level and the surface geostrophic velocity in the Southern Ocean, in order to identify the mode of the observed variations. |
format |
Other/Unknown Material |
author |
Chelton, Dudley B. Schlax, Michael G. Witter, Donna L. Richman, James G. |
author_facet |
Chelton, Dudley B. Schlax, Michael G. Witter, Donna L. Richman, James G. |
author_sort |
Chelton, Dudley B. |
title |
Geosat altimeter observations of the surface circulation of the Southern Ocean |
title_short |
Geosat altimeter observations of the surface circulation of the Southern Ocean |
title_full |
Geosat altimeter observations of the surface circulation of the Southern Ocean |
title_fullStr |
Geosat altimeter observations of the surface circulation of the Southern Ocean |
title_full_unstemmed |
Geosat altimeter observations of the surface circulation of the Southern Ocean |
title_sort |
geosat altimeter observations of the surface circulation of the southern ocean |
publishDate |
1990 |
url |
http://ntrs.nasa.gov/search.jsp?R=19910028109 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19910028109 Accession ID: 91A12732 |
op_rights |
Copyright |
_version_ |
1766204898739748864 |