Joint Inversion of GNSS and GRACE for Terrestrial Water Storage Change in California.

ABSTRACT: Global Navigation Satellite System (GNSS) vertical displacements measuring the elastic response of Earth's crust to changes in hydrologic mass have been used to produce terrestrial water storage change (∆TWS) estimates for studying both annual ∆TWS as well as multi-year trends. However, these estimates require a high observation station density and minimal contamination by nonhydrologic deformation sources. The Gravity Recovery and Climate Experiment (GRACE) is another satellite-based measurement system that can be used to measure regional TWS fluctuations. The satellites provide highly accurate ∆TWS estimates with global coverage but have a low spatial resolution of ∼400 km. Here, we put forward the mathematical framework for a joint inversion of GNSS vertical displacement time series wit

SUBMITTER: Carlson G 

PROVIDER: S-EPMC9287077 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature