The Total Water Storage (TWS) Anomaly indicator that is implemented in the Copernicus Global Drought Observatory (GDO) is used for determining the occurrence of long-term hydrological drought conditions, which arise when the TWS reaches values lower than usual. This quantity is often used as a proxy of groundwater drought. The TWS Anomaly indicator in GDO is computed as anomalies of GRACE-derived TWS data - which are produced by the Center for Space Research (CSR) at the University of Texas at Austin, as scaled by the NASA Jet Propulsion Laboratory (JPL) (available at: https://podaac-tools.jpl.nasa.gov/drive/files/allData/tellus/L3/gracefo/land_mass/RL06/).
- EDO European and Global Drought Observatories
How to cite
European and Global Drought Observatories, EDO (2002): GDO GRACE Total Water Storage Anomaly (version 1.1.0). European Commission, Joint Research Centre (JRC) [Dataset] PID: http://data.europa.eu/89h/0fd62e28-241f-472c-8966-98744920e181
This Factsheet provides a detailed technical description of the indicator Total Water Storage (TWS) Anomaly, which is implemented in the Copernicus Global Drought Observatory (GDO), and used for detecting and monitoring long-term hydrological drought conditions
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