GDO Total Water Storage Anomaly (TWSA) (GRACE) (version 2.1.1)

Description

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 with respect to the long-term average 2002-2023 for data from 2002 to 2024 and to the long-term average 2002-2024 for data of year 2025. TWS data 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).

Contact

Email: JRC-EMS-DROUGHT (at) ec.europa.eu

Contributors

European and Global Drought Observatories, EDO

How to cite

European Commission, Joint Research Centre (JRC) (2002): GDO Total Water Storage Anomaly (TWSA) (GRACE) (version 2.1.1). European Commission, Joint Research Centre (JRC) [Dataset] PID: http://data.europa.eu/89h/0fd62e28-241f-472c-8966-98744920e181

Keywords

CEMS Copernicus European Drought Observatory (EDO) Global Drought Observatory (GDO) GRACE Groundwater

Data access

Data Download URL

Use conditions: Creative Commons Attribution 4.0 International
Access conditions: No limitations

URL

Data Download Service (NetCDF)

Use conditions: Creative Commons Attribution 4.0 International
Access conditions: No limitations

URL

Data Download Service (GeoTIFF)

Use conditions: Creative Commons Attribution 4.0 International
Access conditions: No limitations

URL

GRACE Total Water Storage (TWS) Anomaly Factsheet

Use conditions: European Commission reuse notice
Access conditions: No limitations

Download

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

Publications

Publication

Analysing the Relationship between Multiple-Timescale SPI and GRACE Terrestrial Water Storage in the Framework of Drought Monitoring

Cammalleri, C., Barbosa, P., Vogt, J.V., 2019. Analysing the Relationship between Multiple-Timescale SPI and GRACE Terrestrial Water Storage in the Framework of Drought Monitoring. Water 11(8), 1672, https://doi.org/10.3390/w11081672.

DOI

10.3390/w11081672

Geographic areas

World

Spatial coverage

GML

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GML

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WKT

POLYGON ((-180 90, 180 90, 180 -90, -180 -90, -180 90))

Temporal coverage

From date	To date
2012-04-01	N/A

Additional information

Published by: European Commission, Joint Research Centre
Created date: 2020-12-09
Modified date: 2025-02-21
Issued date: 2002-04-01
Landing page: https://drought.emergency.copernicus.eu/
Language(s): English
Data theme(s): Environment
Update frequency: monthly
Identifier: http://data.europa.eu/89h/0fd62e28-241f-472c-8966-98744920e181
Popularity