Large eddy simulations of weakly heated stratocumulus top boudary layer etc15 Tracking Number 328Presentation: Session: Atmospheric turbulence 3 Room: Room C Session start: 10:30 Wed 26 Aug 2015 Marta Kopec mtrzask@igf.fuw.edu.pl Affifliation: Institute of Geophysics, Faculty of Physics, University of Warsaw, Warsaw, Poland Szymon Malinowski malina@igf.fuw.edu.pl Affifliation: Institute of Geophysics, Faculty of Physics, University of Warsaw, Warsaw, Poland Zbigniew Piotrowski Zbigniew.Piotrowski@imgw.pl Affifliation: Institute of Meteorology and Water Management, Warsaw, Poland Topics: - Atmospheric turbulence, - Turbulence in multiphase and non-Newtonian flows, - Large eddy simulation and related techniques, - Thermally driven turbulence Abstract: Performing Large Eddy Simulations (LES) of marine stratocumulus in the weakly heated boundary layer is an opportunity to evaluate the relative importance of radiative cooling and of a wind shear in cloud top region on cloud structure. It is shown that cooling due to longwave radiation influences the convective circulation in the atmospheric boundary layer and counteracts dilution caused by the wind shear. |