Water storage declines (mm equivalent water height) in several of the world’s major aquifers in Earth’s arid and semi-arid mid-latitudes, derived from the NASA GRACE satellite mission. The monthly storage changes are shown as anomalies for the period April 2002–May 2013, with 24-month smoothing. Image from J. S. Famiglietti, The Global Groundwater Crisis, Nature Climate Change, November, 2014

Author:Jay Famiglietti

Jay Famiglietti is a hydrologist, a Global Futures Professor at Arizona State University, and a science communicator. He is Executive Director Emeritus of the Global Institute for Water Security at the University of Saskatchewan, where he held the Canada 150 Research Chair in Hydrology and Remote Sensing. He was founding Chief Scientist of the Silicon Valley tech startup, Waterplan, which he continues to advise. Before moving to Saskatchewan, he served as the Senior Water Scientist at the NASA Jet Propulsion Laboratory at the California Institute of Technology. Famiglietti and his research team use satellites and develop computer models to track changing freshwater availability and groundwater depletion around the world. He is an active speaker, a frequent advisor to national and international government officials on water issues, and avid writer for the general public.


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