prognostic equation


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prognostic equation

[präg′näs·tik i′kwā·zhən]
(meteorology)
Any equation governing a system which contains a time derivative of a quantity and therefore can be used to determine the value of that quantity at a later time when the other terms in the equation are known (for example, the vorticity equation).
References in periodicals archive ?
FDDA, based on Newtonian relaxation or "nudging", adds artificial (non-physical) forcing functions to the WRF model's prognostic equations to nudge the solutions toward either a verifying analysis or toward observations.