Slayt 1 - RTC, Regional Training Centre - Turkey

Parameterizing Sub Grid-Scale ProcessesThe following examples of atmospheric processes illustrate the need to parameterize subgrid-scale processes in order to account for their effects on the larger-scale forecastvariables.Convective processes: Important vertical redistribution of heat and moisture byconvection can easily occur between mesoscale grid boxes. The animation shows thedevelopment of the rain shaft (white and gray) and the accompanying cold pool (blueshading). Notice that sub grid-scale variations in the convection will have an effect on themoisture and heating in some of the model grid boxes.