Jet Propulsion Laboratory
California Institute of Technology
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In a recent study, scientists found that a previously unmeasured source – water percolating through soil and fractured rock below California’s Sierra Nevada mountains – delivers an average of 4 million acre feet (5 cubic kilometers) of water to the state’s Central Valley each year. This underground source accounts for about 10% of all the water that enters this highly productive farmland each year from every source (including river inflows and precipitation).
NASA Measures Underground Water Flowing From Sierra to Central Valley
Researchers have untangled puzzling patterns of sinking and rising land to pin down the underground locations where water is being pumped for irrigation.
NASA Finds New Way to Monitor Underground Water Loss
Decades of drought across the U.S. Southwest has led some scientists to classify the intense, prolonged dryness as a “megadrought.” But drought in North America took a different shape in 2021, affecting areas that do not face long-term or intense drought as often. The northern Great Plains has been coping with drought for months.
Drought in the Northern Great Plains
Focusing on the GRACE and GRACE-FO missions, the award cites the “outstanding leadership of the international consortium in the planning and implementation of the successful Earth gravity missions.”
International Cooperation Award for NASA JPL's Michael Watkins, Michael Gross
Scientists have gained new insights into the processes that have driven ocean level variations for over a century, helping us prepare for the rising seas of the future.
NASA-led Study Reveals the Causes of Sea Level Rise Since 1900
Continuous monitoring of glaciers and ice caps has provided unprecedented insights to global ice loss that could have serious socioeconomic impacts on some regions.
Ice Melt Linked to Accelerated Regional Freshwater Depletion