Data and Products
The atmospheric angular momentum is derived from the operational analysis
(4 epochs a day) as well as from 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 Synopsis / » 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 Synopsis / » 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 Synopsis / » 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 Synopsis / » APL Data and Documentation
A compilation of more than 7100 globally distributed, mean annual pressure tide estimates
at diurnal and semidiurnal periodicities has been deduced from 20 years of station and
marine barometric reports of the International Surface Pressure Databank version 2.
These data, referred to as IAP (In situ air pressure tides) are published together with
gridded climatologies inferred from multiquadric interpolation.
» Pressure Tide Synopsis / » IAP Data and Documentation