Earth System Model for Gravity Mission Simulation Studies

A new synthetic model of the time-variable gravity field of the Earth suitable for satellite gravity mission simulation studies is now available. The model is an update of the ESA Earth System Model as described by Gruber et al. (2011), and is also given in spherical harmonics up to degree and order 180 for the years 1995 to 2006 with a time sampling of 6 hours. File formats and conventions follow the ICGEM standards.

The updated ESA Earth System Model features the following changes and improvements:

  • Atmospheric mass anomalies from ECMWF ERA-Interim reanalysis
  • Terrestrial Water Storage Variations from LSDM
  • Greenland and Antarctica surface mass balance from RACMO2
  • Large-scale ocean variability from OMCT (GRACE AOD1B RL05 configuration)
  • Meso-scale ocean variability from the MPIOM STORM experiment
  • Consistent forcing of all hydrospheric models with ECMWF ERA-Interim
  • Land - Ocean - Mask identical to GRACE AOD1B RL05
  • Mass fluxes are modeled implicitly by adding the sum of the mass anomalies in the atmosphere, cryosphere, and terrestrially hydrosphere additive-inversely to the ocean as globally homogeneous barystatic sea-level anomaly
  • Revised spatial pattern of the Sumatra-Andaman earthquake's co- and post-seismic deformation
  • Elastic Load Love Number according to the Earth’s Center of Figure (CF) frame degree 1 terms from GIA included

Reference Paper

Paper describing the realistically perturbed De-Aliasing Model



Dr. Henryk Dobslaw
Earth System Modelling