HR: 08:00h
AN: G31A-01    [PDF]
TI: GRACE Gravity Field Analysis Results from JPL
AU: * Watkins, M
EM: Michael.Watkins@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Yuan, D
EM: Dah-Ning.Yuan@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Bertiger, W C
EM: willy.bertiger@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Kruizinga, G
EM: Gerhard.Kruizinga@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Romans, L C
EM: Larry.Romans@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Wu, S
EM: Sien.Wu@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AB: The Jet Propulsion Laboratory serves as the GRACE gravity field analysis verification center, generating independent gravity solutions for assessing the error characteristics of the fields through comparison with the other centers (UTCSR and GFZ), and performing studies to develop optimal parameterizations which may improve the field quality. In addition, we provide a quick gravity solution turnaround capability to assess the utility of alternate Level-1 algorithm implementations. In this presentation, we will present the most recent gravity field results from GRACE, with special attention to summarizing our best understanding of the Level-1 data quality and influence on the field characteristics, and the effects on the fields of varying parameterizations (orbital arc lengths, nuisance parameterization and sub-arc lengths, etc) in the Level-2 analysis.
DE: 1214 Geopotential theory and determination
DE: 1223 Ocean/Earth/atmosphere interactions (3339)
DE: 1234 Regional and global gravity anomalies and Earth structure
DE: 1241 Satellite orbits
SC: Geodesy [G]
MN: 2003 Fall Meeting