U.S. Navy Geosat Enhanced JGM-3 GDRs Altimeter Data from the Geodetic Mission (GM) and from the Exact Repeat Missions (ERM) (CD-ROM)


Name Retail Price Online Store Price Quantity
Geosat JGM-3 Disc 1 (GM) (Day 090-227, 1985) $17.00 $13.00
Geosat JGM-3 Disc 2 (GM) (Day 228-265, 1985) $17.00 $13.00
Geosat JGM-3 Disc 3 (GM) (Day 001-138, 1986) $17.00 $13.00
Geosat JGM-3 Disc 4 (GM) (Day 139-273, 1986) $17.00 $13.00
Geosat JGM-3 Disc 5 (ERM) (Day 312, 1986-082, 1987) $17.00 $13.00
Geosat JGM-3 Disc 6 (ERM) (Day 083-235, 1987) $17.00 $13.00
Geosat JGM-3 Disc 7 (ERM) (Day 236, 1987-040, 1988) $17.00 $13.00
Geosat JGM-3 Disc 8 (ERM) (Day 041-210, 1988) $17.00 $13.00
Geosat JGM-3 Disc 9 (ERM) (Day 211, 1988-031, 1989) $17.00 $13.00
Geosat JGM-3 Disc 10 (ERM) (Day 032-364, 1989) $17.00 $13.00
Geosat JGM-3 Altimeter Data - U.S.Navy Geosat - complete 10-disc set $170.00 $130.00

This June 1997 release of satellite altimeter data collected by the U.S. Navy's Geosat mission represents a significant improvement over previous versions. The ten CD ROMs contain geophysical data records (GDRs) which span both the Geodetic Mission (GM: 3/85 - 9/86) and Exact Repeat Mission (ERM: 11/86 - 12/89). The GDRs incorporate a new 10-cm satellite orbit computed by the NASA Goddard Space Flight Center using the JGM-3 gravity model. In addition, the overall accuracy of the data is increased by new geophysical corrections (CSR 3.0 tides; model troposphere from the NCEP/NCAR reanalysis; IRI95 ionosphere; a new sea state bias based on wind, wave and satellite attitude; and corrections for clock drift and timing bias). The GDRs are stored in daily files using the same 78-byte, integer binary format as previous releases of the Geosat GDRs. CD#1 (first GM) and CD#5 (first ERM) contain documentation, tabular data, "high-precision" corrections, figures, and the CD-ROM handbook which can be viewed using standard Web browsers.