Abstract: Although many scientists have focused on the spatiotemporal distribution of dust storm in Mongolia, there are a few studies have considered physical process. The atmospheric stability parameters such as Brunt-Vaisala frequency (N), Gradient Richardson Number (Ri) and Eady Growth Rate (σ_E) were evaluated on 3 different cases of heavy dust storms which are occurred from March to May 2020, covered almost all over Mongolia, using reanalysis data produced by European Centre for Medium-Range Weather Forecasts and radiosonde data from “Dalanzadgad” aerological station in Dalanzadgad, Umnugovi. Differential equations of N, Ri and σ_E are solved using finite difference method.