NASA satellites provide a new view from space of Brazil's ongoing drought.
Empty water reservoirs, severe water rationing, and electrical blackouts are the new status quo in major cities across eastern Brazil where the worst drought in 35 years has desiccated the region. A new NASA study estimates that eastern Brazil has lost an average 28 trillion gallons of water per year from 2012 to 2015. The findings are based on measurements from NASA's GRACE satellites. The two satellites orbit Earth in precise formation and detect changes in Earth's gravity field. Gravity field changes are caused by the movement of large masses of ice and water—including water in rivers and underground. By analyzing the amount of water stored in aquifers and rivers across Brazil from 2002 to 2015, scientists could better understand the depth of the current drought. Watch the video to learn more.