A novel attempt is made to quantify the qualitative interpretation of barotropic instability in terms of counterpropagating Rosssby waves (CRW) as proposed by Hoskins et al. (1985). Although many investigations have been devoted to this quantification in the past. a minimum resolution grid point model is chosen here as a tool where complete insight can be achieved with little effort. https://lecoureures.shop/product-category/course-a-pied-homme-chaussures-sentier/