What can we learn from Global Altimetry/Hydrography comparisons? - art. no. L10604

Type Article
Date 2006-05
Language English
Author(s) Guinehut S1, Le Traon Pierre-Yves2, Larnicol G1
Affiliation(s) 1 : CLS, Space Oceanog Div, F-31520 Ramonville St Agne, France.
2 : IFREMER, F-29280 Plouzane, France.
Source Geophysical Research Letters ( GRL ) (0094-8276) (American Geophysical Union), 2006-05 , Vol. 33 , N. 10 , P. NIL_39-NIL_43
DOI 10.1029/2005GL025551
WOS© Times Cited 56
Keyword(s) Physical Oceanography, Hydrography, Altimetry
Abstract Differences and complementarities between altimeter and hydrographic data are studied to describe the sea level and ocean circulation variations in terms of steric and non-steric contributions. Altimeter sea level anomalies (SLA) and hydrographic dynamic height anomalies (DHA) agree remarkably well. They also reveal, however, systematic large-scale differences in several areas of the Pacific and Indian oceans that are related to a barotropic, Sverdrup-like, response of the ocean to wind forcing. In addition, the use of the two data sets provides a good estimation of the partition between barotropic and baroclinic modes needed for data synthesis or assimilation studies.
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