Analysis of recent LUH GRACE / GRACE-FO gravity field processing results

We show results of both the LUH operational GRACE-FO gravity field processing and of our recent reprocessing of the full GRACE mission. Since 2021, the LUH group at IfE is recognized as Analysis Center in the IAG Combination Service for Time Variable Gravity Fields (COST-G). Quality measures demonstrate that the LUH solutions are close to those of other analysis centers in COST-G and in the GRACE / GRACE-FO Science Data System (SDS). We discuss the current standards and strategy of our processing. We have studied range-rate residuals for the two complete missions, with a focus on specific spatial and temporal patterns. This helps to identify and analyze detailed signatures of anomalous systematic effects, such as shadow transition anomalies, star camera stray light effects, and KBR signal to noise ratio drops. Results could be used to reassess the system integration of the satellite-to-satellite tracking sensor system. We discuss the validation of our spherical harmonic solutions using specific geophysical signals, and we also show and discuss recent LUH LRI-based gravity solutions.