GRACE Archives ~ GIS Lounge

Changes in Earth’s gravity field resulting from loss of ice from West Antarctica between November 2009 and June 2012 (mE = 10–12 s–2). A combination of data from ESA’s GOCE mission and NASA’s Grace satellites shows the ‘vertical gravity gradient change’.

Measuring Small Variations in the Earth’s Gravity

September 29, 2014 by Caitlin Dempsey

Scientists can create higher resolution maps showing small variations in the earth’s gravity gradient by combining data from two different satellites. The NASA–German Grace satellites were … Read more

GRACE based shallow groundwater drought indicator map for July 7, 2014. Source: NASA.

Using Remote Sensing to Measure the Effect of Drought on Ground Water

February 19, 2020July 28, 2014 by Caitlin Dempsey

This map shows a comparison of modeled relative amount of water stored in underground aquifers in the continental United States for July 7, 2014 as compared to the average for comparable weeks for the sixty year average water storage.