Data and Products

Atmosphere Angular Momentum

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

Atmosphere Delays

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

Atmospheric Gravity Field Coefficients

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

Atmosphere Pressure Loading

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

Air Pressure Tides

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