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Hammarstrand, Ulla (2011)
Publisher: Co-Action Publishing
Journal: Tellus A
Languages: English
Types: Article
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
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