ESRS is an old member in GRACE Science Team. The GRACE mission launched March 17, 2002. Since 2003, GRACE Science Team has developed innovative methods and approaches that enable continuous water mass (groundwater/surface water) change measurement among the GRACE and GRACE-FO observations (2002-present). Also, validation and verification of the methodologies and integration of different data sources (e.g. GRACE, geochemistry, geophysics, and field data). Another high priority focus is data assimilation of GRACE and GRACE-FO data in a broad range of Earth System models and modeling systems.