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Terrestrial Water Storage Anomaly 2002 - 2015
Animation showing Terrestrial Water Storage Anomaly (TWSA) data from 2002 to 2015. Browns indicate areas with less ground water than normal and greens are areas with more ground water than normal, which correlates to droughts and floods in these various regions.
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A pair of experimental twin satellites called the Gravity Recovery And Climate Experiment, or "GRACE", were launched in March 2002. Since then they have been collecting gravity measurements which scientists use to derive Terrestrial Water Storage Anomalies (TWSA). TWSA can then be used as an indicator for drought and flood conditions across the globe. For more information on the GRACE mission please visit http://www.nasa.gov/mission_pages/Grace/
Colorbar showing Terrestrial Water Storage Anomalies (in centimeters). Browns indicate lower than average ground water saturation, whereas greens represent areas with more ground water than normal.
Please give credit for this item to:
NASA's Scientific Visualization Studio
Datasets used in this visualization
Gravity Recovery and Climate Experiment (GRACE) TWS Anomaly (Terrestrial Water Storage Anomaly)ID: 889Analysis 1/2002 - 9/2015
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