Abstract:?Gravity Recovery and Climate Experiment (GRACE) intersatellite geopotential differences are in-situ gravimetric observables with explicit geophysical interpretation. Based on the improved energy balance equation and remove-compute-restore (RCR) technique, we estimated the precise intersatellite geopotential differences from April, 2002 to July, 2016 from GRACE Level-1B data (including K-band ranging (KBR) range-rate, satellite orbits, accelerometer and attitude measurements), and marked the estimate results by means of data quality control method. The dataset includes 155 data files with monthly interval, and each data file includes the positions of GRACE satellites A and B in Earth-centered Earth-fixed (ECEF) coordinate system, intersatellite geopotential difference after deducting the mean gravity field model (i.e., GGM05C), and the corresponding quality flags. Furthermore, the reliability of the dataset is validated by comparing the time variable gravity field and surface mass change models retrieved by GRACE intersatellite geopotential differences with the official released models. This dataset further enriches the GRACE data products, and can provide data support for static and time-varying gravity field modeling, global and regional surface mass change inversion, as well as related studies in geoscience.
Keywords:?GRACE;?intersatellite geopotential differences;?improved energy balance equation;?Level-1B data;?surface mass variations