Method of small perturbations
From Glossary of Meteorology
method of small perturbations
(
Also called method of perturbations, perturbation method.) The linearization of the appropriate equations governing a system by the assumption of a steady state, with departures from that steady state limited to small perturbations.
Also called method of perturbations, perturbation method.) The linearization of the appropriate equations governing a system by the assumption of a steady state, with departures from that steady state limited to small perturbations.