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GRACE, twin satellites launched in March 2002, are making detailed measurements of Earth's gravity field which will lead to discoveries about gravity and Earth's natural systems. These discoveries could have far-reaching benefits to society and the world's population.

Orbiting twins - The GRACE satellites
Orbiting Twins - The GRACE satellites

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Current Orbit Data
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GRACE in the News

World’s Aquifers Losing Replenishment Race, Researchers Say

From the Arabian Peninsula to northern India to California’s Central Valley, nearly a third of the world’s 37 largest aquifers are being drained faster than they are being replenished, according to a recent study led by scientists at the University of California, Irvine. The aquifers are concentrated in food-producing regions that support up to two billion people.

A companion study indicates that the total amount of water in the aquifers, and how long it will last at current depletion rates, is still uncertain. “In most cases, we do not know how much groundwater exists in storage” to cover unsustainable pumping, the study said. Historical estimates, it argues, probably have unrealistically overstated total groundwater volume.

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The GRACE mission is jointly implemented by NASA and DLR under
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Last Modified: Tue Aug 04, 2015
CSR/TSGC Team Web