Earth  ID: 4415

Terrestrial Water Storage Anomaly 2002 - 2015

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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

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Visualization Credits

Alex Kekesi (GST): Lead Visualizer
Cindy Starr (GST): Visualizer
Kel Elkins (USRA): Visualizer
Doug C. Morton (NASA/GSFC): Lead Scientist
Yang Chen (University of California, Irvine): Lead Scientist
Jim Randerson (University of California, Irvine): Lead Scientist
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NASA's Scientific Visualization Studio

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Gravity Recovery and Climate Experiment (GRACE)
Fire and Smoke

Data Used:
Gravity Recovery and Climate Experiment (GRACE)/Terrestrial Water Storage Anomaly also referred to as: TWS Anomaly
Analysis - 1/2002 - 9/2015
Note: While we identify the data sets used in these visualizations, we do not store any further details nor the data sets themselves on our site.

GCMD >> Earth Science >> Terrestrial Hydrosphere
GCMD >> Earth Science >> Climate Indicators >> Terrestrial Hydrosphere Indicators
NASA Science >> Earth
SVS >> Hyperwall
DLESE >> Natural hazards
DLESE >> Ecology

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version