Open AccessGSFC00 mean sea surface, gravity anomaly, and vertical gravity gradient from satellite altimeter data
Author(s) -
Wang Yan Ming
Publication year - 2001
Publication title -
journal of geophysical research: oceans
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2000jc000470
Subject(s) - geoid , altimeter , geology , gravity anomaly , geodesy , free air gravity anomaly , anomaly (physics) , sea surface height , ocean surface topography , satellite , geophysics , bouguer anomaly , physics , measured depth , paleontology , condensed matter physics , astronomy , oil field
A mean sea surface, GSFC00, and its derivatives, the altimetry gravity anomaly and vertical gravity gradient fields, were computed using sea surface heights of TOPEX, ERS, and Geosat satellite altimeter missions provided by the NASA Ocean Altimeter Pathfinder Project [ Koblinsky et al. , 1998]. A new estimation method, distinct from the GSFC98 mean sea surface computation [ Wang , 2000a], was explored and used to reduce ocean variability in the mean sea surface heights. The gravity anomaly and vertical gravity gradient fields were then computed from the mean sea surface height implied geoid undulations. Validation of the GSFC00 mean sea surface and gravity anomaly was also performed.