The analysis of temporal variations in regional models of the Sargasso Sea from GEOS-3 altimetry
The dense coverage of short pulse mode GEOS-3 altimeter data in the western North Atlantic provides a basis for studying time variations in the sea surface heights in the Sargasso Sea. Two techniques are utilized: the method of regional models, and the analysis of overlapping passes. An 88 percent c...
Main Authors: | , , |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
1978
|
Subjects: | |
Online Access: | http://hdl.handle.net/2060/19780019782 |
id |
ftnasantrs:oai:casi.ntrs.nasa.gov:19780019782 |
---|---|
record_format |
openpolar |
spelling |
ftnasantrs:oai:casi.ntrs.nasa.gov:19780019782 2023-05-15T17:32:42+02:00 The analysis of temporal variations in regional models of the Sargasso Sea from GEOS-3 altimetry Mather, R. S. Hirsch, B. Coleman, R. Unclassified, Unlimited, Publicly available May 1, 1978 application/pdf http://hdl.handle.net/2060/19780019782 unknown Document ID: 19780019782 Accession ID: 78N27725 http://hdl.handle.net/2060/19780019782 No Copyright CASI OCEANOGRAPHY NASA-TM-79549 Intern. Symp. on The Use of Artificial Satellites for Geodesy and Geodynamics; 29 May - 3 Jun. 1978; Lagonissi; Greece 1978 ftnasantrs 2019-07-21T05:08:37Z The dense coverage of short pulse mode GEOS-3 altimeter data in the western North Atlantic provides a basis for studying time variations in the sea surface heights in the Sargasso Sea. Two techniques are utilized: the method of regional models, and the analysis of overlapping passes. An 88 percent correlation is obtained between the location of cyclonic eddies obtained from infrared imagery and sea surface height minima in the altimeter models. This figure drops to 59 percent in the case of correlations with maxima and minima of surface temperature fields. The analysis of overlapping passes provides a better picture of instantaneous sea state through wavelengths greater than 30 km. The variability of the Sargasso Sea through wavelengths between 150 km and 5000 km is estimated at + or - 28 cm. This value is in reasonable agreement with oceanographic estimates and is compatible with the eddy kinetic energy of a wind driven circulation. Other/Unknown Material North Atlantic NASA Technical Reports Server (NTRS) |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
OCEANOGRAPHY |
spellingShingle |
OCEANOGRAPHY Mather, R. S. Hirsch, B. Coleman, R. The analysis of temporal variations in regional models of the Sargasso Sea from GEOS-3 altimetry |
topic_facet |
OCEANOGRAPHY |
description |
The dense coverage of short pulse mode GEOS-3 altimeter data in the western North Atlantic provides a basis for studying time variations in the sea surface heights in the Sargasso Sea. Two techniques are utilized: the method of regional models, and the analysis of overlapping passes. An 88 percent correlation is obtained between the location of cyclonic eddies obtained from infrared imagery and sea surface height minima in the altimeter models. This figure drops to 59 percent in the case of correlations with maxima and minima of surface temperature fields. The analysis of overlapping passes provides a better picture of instantaneous sea state through wavelengths greater than 30 km. The variability of the Sargasso Sea through wavelengths between 150 km and 5000 km is estimated at + or - 28 cm. This value is in reasonable agreement with oceanographic estimates and is compatible with the eddy kinetic energy of a wind driven circulation. |
format |
Other/Unknown Material |
author |
Mather, R. S. Hirsch, B. Coleman, R. |
author_facet |
Mather, R. S. Hirsch, B. Coleman, R. |
author_sort |
Mather, R. S. |
title |
The analysis of temporal variations in regional models of the Sargasso Sea from GEOS-3 altimetry |
title_short |
The analysis of temporal variations in regional models of the Sargasso Sea from GEOS-3 altimetry |
title_full |
The analysis of temporal variations in regional models of the Sargasso Sea from GEOS-3 altimetry |
title_fullStr |
The analysis of temporal variations in regional models of the Sargasso Sea from GEOS-3 altimetry |
title_full_unstemmed |
The analysis of temporal variations in regional models of the Sargasso Sea from GEOS-3 altimetry |
title_sort |
analysis of temporal variations in regional models of the sargasso sea from geos-3 altimetry |
publishDate |
1978 |
url |
http://hdl.handle.net/2060/19780019782 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
CASI |
op_relation |
Document ID: 19780019782 Accession ID: 78N27725 http://hdl.handle.net/2060/19780019782 |
op_rights |
No Copyright |
_version_ |
1766130941098459136 |