Physics – Geophysics
Scientific paper
Oct 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30toce6g&link_type=abstract
Geophysical Research Letters, Volume 30, Issue 20, pp. OCE 6-1, CiteID 2062, DOI 10.1029/2003GL018200
Physics
Geophysics
4
Oceanography: General: Equatorial Oceanography, Exploration Geophysics: Gravity Methods, Geodesy And Gravity: Space Geodetic Surveys, Oceanography: General: Descriptive And Regional Oceanography, Oceanography: Physical: Currents
Scientific paper
A new geoid model, combining the CHAMP satellite gravity data and an accurate altimetric mean sea surface, was used to investigate the 1993-1999 mean dynamic topography in the tropical Pacific Ocean. The mean dynamic topography, represented by a spherical harmonic expansion to degree 60 appear to be consistent with our knowledge of the tropical circulation, notably the South Equatorial Counter Current which is clearly visible in the western Pacific. This satellite solution, validated with in-situ data, is independent from any climatology and has a resolution similar to other classical mean dynamic topographies. Altimetry combined with geodesy can thus provide an absolute sea level which will be useful for data assimilation and tropical oceanography.
Gourdeau Lionel
Hernandez Fabrice
Lemoine Jean Michel
Rio Marie Hélène
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