Convective momentum transport usually describes a vertical flux of the momentum of horizontal winds or currents. That momentum is carried like a non-conserved flow tracer by vertical air motions in convection.
In the atmosphere, convective momentum transport by small but vigorous ( cumulus type) cloudy updrafts can be understood as an interplay of three main mechanisms:
The net effect of these interacting mechanisms depends on the detailed configuration or 'organization' of the convective cloud or storm system.