Sentences with phrase «monthly changes in mass»
The researchers used data from NASA's Gravity Recovery and Climate Experiment (GRACE) satellites to map monthly changes in mass within the watershed from 2003 to 2012.
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Monthly measurements in the change in water mass from December 2004 to November 2013 revealed the basin lost nearly 53 million acre feet (65 cubic kilometers) of freshwater, almost double the volume of the nation's largest reservoir, Nevada's Lake Mead.
So the researchers used monthly data from the satellite mission GRACE, or the Gravity Recovery and Climate Experiment, which measures components in the Earth's mass system such as ocean currents, earthquake - induced changes and melting ice.