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Water from on high

Data on changes in water storage in the Congo basin show how GRACE, a pair of satellites designed to record variations in Earth's gravitational field, is benefiting the study of the planet's water cycle.

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Figure 1: Estimates of terrestrial water storage in the Mississippi river basin.


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Lettenmaier, D., Famiglietti, J. Water from on high. Nature 444, 562–563 (2006).

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