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16:00
15 mins
ENTRAINMENT AND DETRAINMENT RATES FROM THE PIV MEASUREMENTS AT THE TOP OF LABORATORY ANALOGS OF STRATOCUMULUS AND CUMULUS CLOUDS
Anna Gorska, Szymon Piotr Malinowski, Jacob Peter Fugal
Session: Atmospheric turbulence 2
Session starts: Tuesday 25 August, 15:00
Presentation starts: 16:00
Room: Room C
Anna Gorska (Institute of Geophysics, Faculty of Physics, University of Warsaw, Warsaw, Poland; Max Planck Institute for Chemistry, Mainz, Germany)
Szymon Piotr Malinowski (Institute of Geophysics, Faculty of Physics, University of Warsaw, Warsaw, Poland; Johannes Gutenberg University of Mainz, Mainz, Germany)
Jacob Peter Fugal (Max Planck Institute for Chemistry, Mainz, Germany; Johannes Gutenberg University of Mainz, Mainz, Germany)
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.