ENTRAINMENT AND DETRAINMENT RATES FROM THE PIV MEASUREMENTS AT THE TOP OF LABORATORY ANALOGS OF STRATOCUMULUS AND CUMULUS CLOUDS etc15 Tracking Number 288Presentation: Session: Atmospheric turbulence 2 Room: Room C Session start: 15:00 Tue 25 Aug 2015 Anna Gorska anna.gorska@igf.fuw.edu.pl Affifliation: Institute of Geophysics, Faculty of Physics, University of Warsaw, Warsaw, Poland; Max Planck Institute for Chemistry, Mainz, Germany Szymon Piotr Malinowski malina@igf.fuw.edu.pl Affifliation: Institute of Geophysics, Faculty of Physics, University of Warsaw, Warsaw, Poland; Johannes Gutenberg University of Mainz, Mainz, Germany Jacob Peter Fugal jacob.fugal@mpic.de Affifliation: Max Planck Institute for Chemistry, Mainz, Germany; Johannes Gutenberg University of Mainz, Mainz, Germany Topics: - Atmospheric turbulence, - Geophysical and astrophysical turbulence Abstract: We analyze mixing at the top of laboratory analogs of convective clouds: stratocumulus and cumulus to investigate entrainment of environmental air into the cloud. We retrieve two components of air velocity using Particle Image Velocimetry technique. Suitable image processing allows to determine cloud–clear air interface. Using velocity differences between cloudy and clear sides of the interface we calculate entrainment / detrainment rates. |