Results from five-day GRACE/GRACE-FO mascon solutions from CSR

The Gravity Recovery and Climate Experiment (GRACE) and its Follow-On (GRACE-FO) missions have provided valuable insights in the fields of Hydrology, Oceanography, Cryosphere Sciences, Solid Earth etc. and improved our understanding of the changes in the Earth’s water cycle since 2002.

While the temporal resolution of the official GRACE/GRACE-FO products is 30 days, this study aims to push those boundaries. This study focuses on the 5-day global mascon solution produced from GRACE/GRACE-FO satellite tracking data. This paper discusses the techniques used and challenges encountered with production of such a global total water storage and ocean bottom pressure product with high temporal sampling. Analysis is performed over hydrological and ocean basins to validate the higher frequency signals captured in this product. An important goal for the production of this higher temporal resolution GRACE/GRACE-FO product is to be able to use these signals with a latency of a few days for ingestion into automated machine learning algorithms for early flood detection applications.