The atmospheric angular momentum is derived from the operational analysis
(4 epochs a day) as well as from the 10 day forecast of the ECMWF. The total mass
of the atmosphere and the cartesian coordinates of its center-of-mass are
also provided on an operational basis.
» AAM Data and Documentation
GGOS Atmosphere determines the coefficients of the Vienna Mapping
Functions 1 (VMF1) and hydrostatic zenith delays on global grids as
well as for selected sites. Furthermore, we provide analytical models
like the Global Mapping Functions (GMF) or the Global Pressure and
Temperature (GPT), as well as many other time series and models.
» Delay Data and Documentation
Within GGOS Atmosphere, atmospheric gravity field coefficients are computed up to degree
and order 100, using the 6-hourly operational stream of the ECMWF.
» AGC Data and Documentation
Radial and horizontal displacements of geodetic sites due to pressure loading effects
are available at 6-hourly intervals. The reference pressure values used within the
computation stem from the newly defined global reference pressure GRP and can be
downloaded on various regular grids.
» APL Data and Documentation