ostst meeting, hobart, australia, march 12-15, 2007 on the use of temporal gravity field models...
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OSTST Meeting, Hobart, Australia, March 12-15, 2007 EIGEN-GRACE05S modifications Reprocessed February 2003 to December 2006 with two-step method using GFZ-processed GPS constellations (EIGEN-GRACE05S, RL04). Instrument parameterization, drift rates for C20, C30 and C40 in the background gravity field and the arc length (1 day) were not changed. Major updates: Static background gravity model: EIGEN-GL04C (150x150) (Förste et al. 2006). Inclusion of secular rates for C21, S21 (IERS Conventions 2003). Reference epoch of models: 01-Jan-2000 (IERS Conventions 2003). Updated K2 and included M4 tide in FES2004 ocean tides. Usage of new atmospheric/oceanic de-aliasing product AOD1B-RL04 (mass- conserving baroclinic OMCT ocean model, improved bathymetry, …). Rectified usage of ocean pole tide model (Desai 2002). Relativity extended by Lense-Thirring & de Sitter effects (IERS Conventions 2003). Implementation of IERS 2003 nutation and precession model. Tidal and nutational corrections to EOP (local spline interpolation). Integration in CIS (Conventional Inertial System) instead of TDS (True of Date System). Az/El dependent phase center corrections for GPS-SST of GRACE-A/B (JPL)