Parcels of air moving through the atmosphere are called wind,
convection, I'm glad you have heard of
convection, it is one of the three
modes of transport for heat, as thermal energy
on the move.
But a reminder, you are doing V&V
on the dynamic core, the bottom boundary conditions (like orography), each individual parameterization (e.g. radiative transfer,
convection, boundary layer, clouds, etc), and in the case of coupled models the ocean module, the sea ice module, the land process module, the aerosol module (and in future the ice sheet module), in stand alone
mode as well as when coupled in the climate model.