GRACE solves for mass change on 3 degree cells called mascons, and that is the true resolution of the data. Every 0.5 degree TWSa cell repeats the value of the mascon it sits in, and the 1.0 degree layers average those cells with GLDAS terms that vary from cell to cell. The finer grids add no GRACE detail.
When enabled, the global map's scale runs to the 95th percentile of |value| over all cells and months, so a few extreme cells saturate. In a region it runs to the largest |value| among the region's cells over all months. 0 is always the center color.
Delete all locally cached data (coordinates and the global animation). The next page refresh will reload everything from the network, simulating a first visit.
Upload a GeoJSON file containing polygon geometries to analyze GRACE groundwater data within the region boundary.
Drag and drop a GeoJSON file here
or
.geojson or .json files accepted