Browsing University of Hertfordshire by Author "Ritter, Georg"

Now showing items 1-4 of 4

    • Characterizing ice particles using two-dimensional reflections of a lidar beam 

      Goerke, Marissa; Ulanowski, Zbigniew; Ritter, Georg; Hesse, Evelyn; Neely, Ryan; Taylor, Laurence; Stillwell, Robert; Kaye, Paul (2017-07-01)
      We report a phenomenon manifesting itself as brief flashes of light on the snow surface near a lidar beam. The flashes are imaged and interpreted as specular reflection patterns from individual ice particles. Such patterns ...

    • The Growth and Morphology of Small Ice Crystals in a Diffusion Chamber 

      Ritter, Georg (2015-08-20)
      Small water ice crystals are the main component of cold tropospheric clouds such as cirrus. Because these clouds cover large areas of our planet, their role in the radiation budget of incoming and outgoing radiation to the ...

    • Surface roughness during depositional growth and sublimation of ice crystals 

      Chou, Cedric; Voigtländer, Jens; Ulanowski, Zbigniew; Herenz, Paul; Bieligk, Henner; Clauss, Tina; Niedermeier, Dennis; Hartmann, Susan; Ritter, Georg; Stratmann, F. (2018-09-27)
      Ice surface properties can modify the scattering properties of atmospheric ice crystals and therefore affect the radiative properties of mixed-phase and cirrus clouds. The Ice Roughness Investigation System (IRIS) is a new ...

    • Wigner flow reveals topological order in quantum phase space dynamics 

      Steuernagel, Ole; Kakofengitis, Dimitris; Ritter, Georg (2013-01)
      The behaviour of classical mechanical systems is characterised by their phase portraits, the collections of their trajectories. Heisenberg's uncertainty principle precludes the existence of sharply defned trajectories, ...