0000000000617526

AUTHOR

Thomas Schwitalla

showing 2 related works from this author

Initiation of deep convection at marginal instability in an ensemble of mesoscale models: a case-study from COPS

2011

The present study investigates the initiation of precipitating deep convection in an ensemble of convection-resolving mesoscale models. Results of eight different model runs from five non-hydrostatic models are compared for a case of the Convective and Orographically-induced Precipitation Study (COPS). An isolated convective cell initiated east of the Black Forest crest in southwest Germany, although convective available potential energy was only moderate and convective inhibition was high. Measurements revealed that, due to the absence of synoptic forcing, convection was initiated by local processes related to the orography. In particular, the lifting by low-level convergence in the planet…

Convection021110 strategic defence & security studiesAtmospheric ScienceConvective inhibition010504 meteorology & atmospheric sciencesMeteorologyPlanetary boundary layer0211 other engineering and technologiesMesoscale meteorologyOrography02 engineering and technologyForcing (mathematics)01 natural sciencesConvective available potential energyFree convective layerPhysics::Fluid Dynamics13. Climate actionClimatologyPhysics::Atmospheric and Oceanic PhysicsGeology0105 earth and related environmental sciencesQuarterly Journal of the Royal Meteorological Society
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Multi-model simulations of a convective situation in low-mountain terrain in central Europe

2008

The goal of the present study is to investigate the variability of simulated convective precipitation by three convection-resolving models using different set-ups and initial and boundary conditions. The COSMO, MM5 and WRF models have been used to simulate the atmospheric situation on 12 July 2006, when local convection occurred in central Europe under weak synoptic forcing. The focus of this investigation is on the convective precipitation in the northern Black Forest in South-West Germany. The precipitation fields from the nine model simulations differ considerably. Six simulations capture the convective character of the event. However, they differ considerably in the location and timing …

ConvectionAtmospheric ScienceMeteorologyAtmospheric convectionMiddle latitudesWeather Research and Forecasting ModelMM5Environmental sciencePrecipitationForcing (mathematics)Atmospheric sciencesConvection cellMeteorology and Atmospheric Physics
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