NASA satellite tracks changes in Earth's freshwater distribution

(Image taken from the NASA page mentioned below)

The twin Grace satellites monitor tiny month-to-month changes in Earth's gravity field that are primarily caused by the movement of water in Earth's land, ocean, ice and atmosphere reservoirs. Hydrologists are analyzing Grace data to identify possible trends in precipitation changes, groundwater depletion and snow and glacier melt rates, and to understand their underlying causes.Read More: https://www.nasa.gov/vision/earth/lookingatearth/grace-20061212.html