Global models for the above 23 constituents are prepared. They are based on spherical harmonic decomposition of ocean tidal field up to degree and order 360. Sa loading models is developed using re-sampled 0.5deg map although their original resolution is 1.0deg for the sake of convenient calculation. Model region and resolution are the same as those for radial displacement model. The potential perturbation is the sum of the potential perturbation due to ocean self-attraction and that due to mass redistribution in the solid Earth caused by ocean tidal loading.
Units are in cm for amplitude and in degrees for location and phase.