We are pleased to announce that a new Terrestrial Water Storage Anomaly (TWSA) product has been prepared on behalf of C3S. The product will be published on the Climate Data Store (CDS) as part of the new Essential Climate Variable (ECV) Service Terrestrial Water Storage and Groundwater.
The TWSA data will represent deviations from the long-term average of water stored on or below the Earth’s surface in the form of soil moisture, groundwater, surface water, snow and ice. Data will be available from April 2002 to present, and is derived from observations of the Gravity Recovery and Climate Experiment (GRACE) satellite mission and its follow on mission, GRACE-FO.
Designated as an ECV as defined by the Global Climate Observing System (GCOS), TWSA is considered essential for contributing to a comprehensive view of Earth’s climate, its variability, and trends. Possible applications include assessments of change in drought and flood magnitude and frequency, investigation of regional hydrological processes, and the quantification of large glacier and ice sheet ice mass loss. TWSA will also be the basis for the upcoming C3S Groundwater Storage Change (GWSC) product.
Watch this space for further announcements regarding the dataset publication.
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ECMWF Support