Global GRACE Data Assimilation for Groundwater and Drought Monitoring: Advances and Challenges
Goddard Space Flight Center · Earth System Science Interdisciplinary Center · +18 more institutions
Abstract
Abstract The scarcity of groundwater storage change data at the global scale hinders our ability to monitor groundwater resources effectively. In this study, we assimilate a state‐of‐the‐art terrestrial water storage product derived from Gravity Recovery and Climate Experiment (GRACE) satellite observations into NASA's Catchment land surface model (CLSM) at the global scale, with the goal of generating groundwater storage time series that are useful for drought monitoring and other applications. Evaluation using in situ data from nearly 4,000 wells shows that GRACE data assimilation improves the simulation of groundwater, with estimation errors reduced by 36% and 10% and correlation improved by 16% and 22% at…
Citation impact
- FWCI
- 31.22
- Percentile
- 100%
- References
- 103
Authors
24- BLBailing LiCorresponding
Goddard Space Flight Center, Earth System Science Interdisciplinary Center, University of Maryland, College Park
- MRMatthew Rodell
Goddard Space Flight Center
- SVSujay V. Kumar
Goddard Space Flight Center
- HKH. K. Beaudoing
Goddard Space Flight Center, Earth System Science Interdisciplinary Center, University of Maryland, College Park
- AGAugusto Getirana
Goddard Space Flight Center, Earth System Science Interdisciplinary Center, University of Maryland, College Park
Topics & keywords
- Groundwater
- Data assimilation
- Environmental science
- Precipitation
- Hydrology (agriculture)
- Assimilation (phonology)
- Groundwater flow
- Streamflow