Tidal gravity factors for known locations in the world

Three main tidal gravity prediction programs are available through the ICET WEB site: PREDICT from ETERNA 3.4, MT80W, T-soft. The characteristics of these programs are discussed in Ducarme B., 2006 Comparison of some tidal prediction programs and accuracy assessment of tidal gravity predictions. Bull. Inf. Marées Terrestres, 141, 11175-11184 The input format of the three programs is really different, so that we must provide here 3 different sets of input parameters. We provide values of the tidal parameters on the 0.5°x0.5° template used by Zahran et al., 2005. The ocean tides loading vector is computed according to the longitude, latitude and elevation of the nodes of the grid. It is then added to a body tides model to provide modeled tidal parameters as explained in the following section. We propose here two different approaches: Zhou J.C. (2007) used the CSR3 ocean tides model together with a purely elastic Earth model. Ocean load vectors have been computed using the Agnew (1996, 1997) software. The NAO99 model was used at ICET with the Melchior et al. (1980) software. The computed load vectors were associated to a non hydrostatic/inelastic Earth model (Dehant et al., 1999) to compute modeled tidal parameters.