Determining parameters of hydrological model

Sergey Zasukhin, Elena Zasukhina


The study considers a problem of determining parameters of hydro-physical characteristics included in many hydrological models of runoff formation in the catchment area. The problem of parameters determination is formulated as an optimal control problem. The object function is standard deviation of modeled soil moisture profiles from some prescribed values, and the control is defined parameters. The discretized optimal control problem is solved numerically by gradient method and exact values of gradient of the objective function are calculated by fast automatic differentiation method.

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