Authors: Sergio Barbosa, Norm Jones, Gus Williams – Brigham Young University
Title: GRACE Groundwater Subsetting Tool
Abstract: The GGST (GRACE Groundwater Subsetting Tool) employs information gathered from the GRACE (NASA Gravity Recovery And Climate Experiment) mission to examine alterations in long-term groundwater storage for particular areas. This tool can detect and describe circumstances in locations lacking data, as well as trends in other areas that could be dominated by noise originating from well data. The GGST tool employs data from both the GRACE and GRACE-FO missions to compute and exhibit alterations in water storage in a web-based mapping system. It employs surface water data from NASA GLDAS models to calculate changes in groundwater storage with a mass balance. The tool accepts shapefiles that indicate areas, such as countries, basins, or aquifers, and calculates the volume of water alterations in those regions. It subsequently displays the outcomes as time series graphs for the whole region or specific points. Additionally, it presents a map animation illustrating the storage change anomalies.