Rainfall nowcasting for flood early warning

Abstract

List of symbolsϵ k Perturbation field at spatial scale level k (-) λ ext k Ratio of the explained to the unexplained variance of the extrapolation component at scale level k (-) λ nwp k Ratio of the explained to the unexplained variance of the NWP component at scale level k (-) µ Mean of variable (L T −1 ) ρ Pearson's correlation (-) σ Standard deviation of variable (L T −1 ) a S Surface water area fraction in WALRUS (-) B Deterministic categorical bias (-) c D Channel depth parameter of WALRUS (L)