a generalized cumulus parameterization based upon higher order turbulence closure has been incorporated into one dimensional simulations. the scheme consists of a level 2.5w turbulence closure scheme mated with a convective adjustment scheme. the convective adjustment scheme includes a gradient term which can be interpreted as either a subsidence term when the scheme is used in large scale models or a mesoscale compensation term when the scheme is used in mesoscale models. the scheme also includes a convective adjustment term which is interpreted as a detrainment term in large scale models. in mesoscale models, the mesoscale compensation term and the advection by the mean vertical motions combine to yield no net advection which is desirable since the convective moistening and heating is now wholly accomplished by the convective adjustment term; double counting is then explicitly eliminated. one dimensional simulations indicate satisfactory performance of the cumulus parameterization scheme for a non-entraining updraft