Terrestrial Water Storage Anomalies

Terrestrial Water Storage (TWS) variability as observed by GRACE/GRACE-FO is an integrated signal from a number of different processes. The following individual components are available:

GRACE: Water Storage
Water mass anomalies expressed in terms of equivalent water height from all water storage compartments including snow, surface water, soil moisture, and deep groundwater.

Errors: Water Storage
Time-variable component of the uncertainty estimate for the GRACE-based water storage variability.

Model: Atmospheric Mass
Atmospheric mass variability as represented in the non-tidal de-aliasing model AOD1B expressed in terms of equivalent water height.

Further information on the applied processing scheme and data products is available here as technical note.

The Level-3 TWS products are available here.