The International Centre for Global Earth Models (ICGEM) is one of five services coordinated by the International Gravity Field Service (IGFS) of the International Association of Geodesy (IAG). The primary task of the ICGEM is making all global gravity field models of the Earth available to the public. The models can be downloaded on the ICGEM website in a standardised self-explanatory format as spherical harmonic coefficients. ICGEM provides not only the most recent, but also historical models, and provides a Digital Object Identifier (DOI) services for gravitational models since 2015. Gravity field differences, their time variation, and different gravity field model functionals are available via a dedicated gravity function calculation service and visualization tool provided on the ICGEM website. In addition, the web site offers tutorials on spherical harmonics and the underlying theory of the calculation service.

Global gravitational models, static models, temporal models, topography related models

DOI Service, ICGEM Model Visualisation; ICGEM calculation service; tutorials

Global Geomonitoring and Gravity Field (1.2)