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Amazon Basin Monthly GRACE Data

Amazon color bar
This visualization displays monthly GRACE data in the Amazon basin. GRACE (Gravity Recovery and Climate Experiment) measures mass distribution and in this instance is used to demonstrate water storage and movement in the basin. Warmer colors like red and yellow reveal areas with greater mass, or more water, while cooler colors like blue and green indicate areas with lesser mass, or less water.

Credit

NASA/Goddard Space Flight Center Scientific Visualization Studio

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Illustration of GRACE-FO gravity data over Africa.
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Video for the GRACE-FO mission.
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The signal of the December 2004 earthquake in the Indian Ocean in GRACE observations of Earth's gravity field. 
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A simplified example of how the distance between the GRACE-FO satellites changes as they pass from the Caribbean Sea across Colombia and Peru.
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Water storage on Earth in 2007
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Depletion of groundwater in northwestern India between 2002 and 2008, measured by GRACE.
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The rainy and dry seasons in the Amazon Basin in 2004, revealed by gravity anomalies observed by GRACE. Reds and pinks show where and when mass was higher than average, a sign that more water was present, and blues show months when mass was lower.
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Variations in water storage in the Tigris and Euphrates river basins from 2003 to 2009, measured by GRACE. Reds represent drier conditions, while blues represent wetter conditions. The majority of ...
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Variations in water storage in the Tigris and Euphrates river basins from 2003 to 2009, measured by GRACE. Reds represent drier conditions, while blues represent wetter conditions. The majority of the water lost was due to reductions in groundwater caused by human activities.
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This map from September 2015 shows deep drought in California, Nevada and Texas. 
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GRACE-FO Mission Brochure

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