In DepthRemote Sensing

Death watch for climate probe

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Science  22 Sep 2017:
Vol. 357, Issue 6357, pp. 1225
DOI: 10.1126/science.357.6357.1225-a

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The Gravity Recovery and Climate Experiment (GRACE), which has monitored minute shifts in Earth's gravity to reveal the unexpectedly rapid melt of polar ice sheets and the drawdown of underground aquifers, will soon make its final science run, NASA announced last week. After running a decade beyond its planned life, one of its tandem satellites is nearly out of fuel. In October, GRACE will begin its final measures before going dark a month later. Its delayed successor, the $550 million GRACE Follow-On, will launch no sooner than next year thanks to troubled launch plans, leaving a gap in climate records.