Questions involving the use of traditional convection parameterization in NWP models with a higher resolution

Article English OPEN
Hammarstrand, Ulla (2011)

Traditional schemes for parameterization of convection have mainly been developed and testedfor models with horizontal resolution of the order of 100 km. Experiments are undertaken totest the behaviour of a traditional parameterization scheme for convection, designed for a coarseresolution, in a numerical weather prediction model when the model resolution is increased. Itis shown that a more detailed forecast of convective precipitation and cloudiness is possiblewith the finer resolution and that the reason for this is a better simulation of the mesoscalecirculation and therefore areas with convergence of moisture, necessary for moist convectionto take place. The convergence of moisture is included in the closure assumption for the parameterizationscheme and the importance of the formulation of the closure is therefore studied.DOI: 10.1034/j.1600-0870.1998.t01-2-00002.x
  • References (15)
    15 references, page 1 of 2

    Andersson, T. and Gustafsson, N. 1994. Coast of departure and coast of arrival: two important concepts for the formation and structure of convective snowbands over seas and lakes. Mon Wea. Rev. 122, 1036-1049.

    Arakawa, A. and Schubert, W. H. 1974. Interaction of a cumulus cloud ensemble with the large-scale environment. Part I. J. Atmos. Sci. 31, 674-701.

    Arakawa, A. and Chen, J. M. 1987. Closure assumptions in the cumulus parameterization problem. Short and medium range numerical weather prediction (ed. T. Matsuno), J. Meteor. Soc. Japan. (special issue), 107-131.

    Betts, A. K. 1986. A new convective adjustment scheme. Part I: Observational and theoretical bases. Quart. J. Roy. Meteor. Soc. 112, 677-691.

    Bougeault, Ph. and Geleyn, F. 1989. Some problems of closure assumption and scale dependency in the parameterization of moist deep convection for numerical weather prediction. Meteorol. Atmos. Phys. 40, 123-135.

    Hammarstrand, U. 1987. Prediction of cloudiness using a scheme for consistent treatment of stratiform and convective condensation and cloudiness in a limited area model. Short and medium range numerical weather prediction (ed. T. Matsuno), J. Meteor. Soc. Japan. (special issue), 187-197.

    Kuo, H. L. 1965. On formation and intensification of tropical cyclones through latent heat release by cumulus convection. J. Atmos. Sci. 22, 40-63.

    Kuo, H. L. 1974. Further studies of the parameterization of the influence of cumulus convection on large scale flow. J. Atmos. Sci. 31, 1232-1240.

    Manabe, S., Smagorinsky, J. and Stickler, R. F. 1965. Simulated climatology of a general circulation model with a hydrological cycle. Mon. Wea. Rev. 93, 769-798.

    Molinari, J. 1993. An overview of cumulus parameterization in mesoscale models. T he representation of cumulus convection in numerical models (ed. K. A. Emanuel and D. J. Raymond). Meteorological Monographs, 24, no. 46, American Met. Soc.

  • Metrics
    No metrics available
Share - Bookmark