… The ITSG-Grace2018 release is based on Level-1B Release 03 data and the AOD1B
Release 06 dealiasing product. It includes unconstrained monthly and Kalman smoothed
daily solutions, as well as a static gravity field, covering the complete GRACE observation
period. Inaccuracies in background models contribute a significant amount of noise towards
the overall error budget of this solution. We mitigate this effect by co-estimating unmodeled
signals at various tidal frequencies, and high-frequency temporal variations in the …

Compared to the ITSG-Grace2016 release, multiple improvements within the processing
chain have been implemented: updated background models, co-estimation of tides and
stochastic modeling of satellite orientation measurements. The ITSG-Grace2018 release is
based on Level-1B Release 03 data and the AOD1B Release 06 dealiasing product. It
includes unconstrained monthly and Kalman smoothed daily solutions, as well as a static
gravity field, covering the complete GRACE observation period. Inaccuracies in background …