Benefits and Cautions in Data Assimilation Strategies: An Example of Modeling Groundwater Recharge
Allen M. Shapiro,
Frederick D. Day‐Lewis
Abstract:Assimilating recent observations improves model outcomes for real‐time assessments of groundwater processes. This is demonstrated in estimating time‐varying recharge to a shallow fractured‐rock aquifer in response to precipitation. Results from estimating the time‐varying water‐table altitude (h) and recharge, and their error covariances, are compared for forecasting, filtering, and fixed‐lag smoothing (FLS), which are implemented using the Kalman Filter as applied to a data‐driven, mechanistic model of rechar… Show more
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