Fakultät für Mathematik und Physik

 

Recent Submissions

  • Zopf, Michael; Keil, Robert; Chen, Yan; Yang, Jingzhong; Chen, Disheng; Ding, Fei; Schmidt, Oliver G. (College Park, MA : American Physical Society, 2019)
    Transferring entangled states between photon pairs is essential in quantum communication. Semiconductor quantum dots are the leading candidate for generating polarization-entangled photons deterministically. Here we show ...
  • Tafferner, A.; Hauf, T.; Leifeld, C.; Hafner, T.; Leykauf, H.; Voigt, U. (Boston, Massachusetts : American Meteorological Society, 2003)
    This paper describes the design of the Advanced Diagnosis and Warning System for Aircraft Icing Environments (ADWICE) and presents results for two different icing weather situations with typical icing conditions. ADWICE ...
  • Hauf, Thomas (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)
    no abstract available
  • Hauf, Thomas (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)
    no abstract available
  • Noh, Y.; Kang, I.S.; Herold, M.; Raasch, S. (College Park, MD : American Institute of Physics, 2006)
    The settling process of suspended particles in the turbulent flow was investigated by analyzing the Lagrangian motion of a large number of particles in the ocean mixed layer simulated by large eddy simulation (LES), focusing ...
  • Raasch, S.; Etling D. (Boston, Massachusetts : American Meteorological Society, 1998)
    A large-eddy simulation model (LES) has been applied to study deep convective processes in a stratified ocean driven by the energetic cooling at the ocean surface. Closely related to a recent laboratory experiment, the ...
  • Noh, Y.; Cheon, W.G.; Raasch, S. (Boston, Massachusetts : American Meteorological Society, 2003)
    Large-eddy simulation of open-ocean deep convection shows that the evolution of convection appears in a fundamentally different pattern, depending on the precondition of the ocean and the magnitude of the surface buoyancy ...
  • Noh, Y.; Min, H.S.; Raasch, Siegfried (Boston, Massachusetts : American Meteorological Society, 2004)
    Large eddy simulation (LES) of the ocean mixed layer was performed in which both wave breaking and Langmuir circulation are realized. Wave breaking was represented by random forcing consistent with the observed near-surface ...
  • Hoffmann, Fabian; Noh, Yign; Raasch, Siegfried (Boston, Massachusetts : American Meteorological Society, 2017)
    The mechanism of raindrop formation in a shallow cumulus cloud is investigated using a Lagrangian cloud model (LCM). The analysis is focused on how and under which conditions a cloud droplet grows to a raindrop by tracking ...
  • Letzel, M.O.; Raasch, S. (Boston, Massachusetts : American Meteorological Society, 2003)
    Mesoscale circulations induced by differential boundary layer heating due to surface inhomogeneities on scales of 5 km and more can significantly change the average properties and the structure of the convective boundary ...
  • Noh, Y.; Goh, G.; Raasch, S. (Boston, Massachusetts : American Meteorological Society, 2011)
    Analysis of large eddy simulation data reveals that Langmuir circulation (LC) induces a significant enhancement of the mixed layer deepening, only if the mixed layer depth (MLD) h is shallow and the buoyancy jump across ...
  • Park, S.-B.; Baik, J.-J.; Raasch, S.; Letzel, M.O. (Boston, Massachusetts : American Meteorological Society, 2012)
    Thermal effects on turbulent flow and dispersion in and above an idealized street canyon with a street aspect ratio of 1 are numerically investigated using the parallelized large-eddy simulation model (“PALM”). Each of ...
  • Schröter, M.; Raasch, S.; Jansen, H. (Boston, Massachusetts : American Meteorological Society, 2005)
    Large-eddy simulations (LES) have been carried out in order to investigate the structure and development of organized mesoscale cellular convection (MCC) during cold air outbreaks (CAOB) and to reevaluate results by Müller ...
  • Noh, Y.; Goh, G.; Raasch, S. (Boston, Massachusetts : American Meteorological Society, 2010)
    Analysis of large-eddy simulation data of the ocean mixed layer under convection reveals that the contribution from wind stress decreases with time as a result of inertial oscillation in the extratropical ocean and that ...
  • Gryanik, V.M.; Hartmann, J.; Raasch, S.; Schröter, M. (Boston, Massachusetts : American Meteorological Society, 2005)
    The Millionshchikov hypothesis of quasi-normal distribution of fourth-order moments fails for convective conditions where the probability density functions of temperature and vertical velocity fluctuations are skewed. This ...
  • Noh, Y.; Goh, G.; Raasch, S.; Gryschka, M. (Boston, Massachusetts : American Meteorological Society, 2009)
    The formation of a diurnal thermocline in the ocean mixed layer under a stabilizing buoyancy flux was simulated successfully by large-eddy simulation, reproducing various features consistent with observation. The analysis ...
  • Mengelkamp, H.-T.; Beyrich, F.; Heinemann, G.; Ament, F.; Bange, J.; Berger, F.; Bösenberg, J.; Foken, T.; Hennemuth, B.; Heret, C.; Huneke, C.; Johnsen, K.-P.; Kerschgens, M.; Kohsiek, W.; Leps, J.-P.; Liebethal, C.; Lohse, H.; Mauder, M.; Meijninger, W.; Raasch, S.; Simmer, C.; Spieß, T. A.; Tittebrand, A.; Uhlenbrock, J.; Zittel, P. (Boston, Massachusetts : American Meteorological Society, 2006)
    The representation of subgrid-scale surface heterogeneities in numerical weather and climate models has been a challenging problem for more than a decade. The Evaporation at Grid and Pixel Scale (EVA-GRIPS) project adds ...
  • Noh, Yign; Oh, Donggu; Hoffmann, Fabian; Raasch, Siegfried (Boston, Massachusetts : American Meteorological Society, 2018)
    Cloud microphysics parameterizations for shallow cumulus clouds are analyzed based on Lagrangian cloud model (LCM) data, focusing on autoconversion and accretion. The autoconversion and accretion rates,A and C, respectively, ...
  • Wulfmeyer, Volker; Turner, David D.; Baker, B.; Banta, R.; Behrendt, A.; Bonin, T.; Brewer, W.A.; Buban, M.; Choukulkar, A.; Dumas, E.; Hardesty, R.M.; Heus, T.; Ingwersen, J.; Lange, D.; Metzendorf, S.; Muppa, S.K.; Meyers, T.; Newsom, R.; Osman, M.; Raasch, S.; Santanello, J.C.; Senff, F.; Späth, F.; Wagner, T.; Weckwerth, T. (Boston, Massachusetts : American Meteorological Society, 2018)
    Forecast errors with respect to wind, temperature, moisture, clouds, and precipitation largely correspond to the limited capability of current Earth system models to capture and simulate land–atmosphere feedback. To ...
  • Li, Yuan; Ding, Fei; Schmidt, Oliver G. (Bristol, UK : Institute of Physics (IOP), 2018)
    Entanglement between particles is a crucial resource in quantum information processing, an important example of which is the exploitation of entangled photons in quantum communication protocols. Among the different available ...

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