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  • Turbulence structure within an inclined laboratory convection tank

    Creator:
    Nance, Jon D.
    Abstract:
    A baroclinic, convective mixed-layer was modeled, using water, in a laboratory convection tank identical to that used in the free convection study of Deardorff and Willis (1985). Baroclinicity and mean-flow shearing were achieved by tilting the tank by an angle of 1O⁰. The resulting mechanical-production rate of turbulence kinetic energy...
    Resource Type:
    Masters Thesis
    Full Text:
    boundary layer in a state of free convection (Willis and Deardorff, 1974; Deardorff and Willis, 1985) For

  • Influence of stratification and accelerations on boundary production of vertical motion

    Creator:
    Park, Soon-Ung
    Abstract:
    The influence of boundary layer pumping on an externally-forced synoptic-scale flow is examined. The results follow earlier theories of stratified incompressible Boussinesq flow. These theories state that the spin-down time scale and the penetration depth of the influence of boundary layer pumping are inversely proportional to the stratification and directly...
    Resource Type:
    Dissertation
    Full Text:
    turbulent diffusion of vorticity. Thus, boundary layer pumping is thought to be an important feedback

  • A numerical study of mesoscale motion in the atmospheric mixed layer

    Creator:
    Ruscher, Paul Harold
    Abstract:
    The numerical modeling of motions in the atmosphere's planetary boundary layer (PBL) is a challenging task. In general, the boundary layer interacts with both the overlying atmosphere and the underlying land or water surface in a complex manner. Random turbulence is also present in the PBL which precludes exact prediction...
    Resource Type:
    Masters Thesis
    Full Text:
    interaction. The boundary layer is a turbulent fluid; turbulence is a random, small-scale flow phenomenon

  • Penetrative elements at the top of the atmospheric mixed layer

    Creator:
    Paumier, James
    Abstract:
    High resolution data of moisture, temperature and wind velocity collected by aircraft during the 1975 Air Mass Transformation Experiment (ANTEX '75) provide information for detailed investigations of the phenomena occurring at the top of a cloud-topped mixed layer. Joint frequency diagrams of humidity and temperature reveal that for parts of...
    Resource Type:
    Masters Thesis
    Full Text:
    Numerous statistical studies of the top of the atmospheric boundary layer have been conducted, both

  • Parameterization of shallow convection in the boundary layer

    Creator:
    Chu, Cheng-tsong
    Abstract:
    A shallow convection scheme is derived from several data sets (BOMEX, GATE, AMTEX, BLX83) and developed for the OSU 1-D boundary layer model. Results of the model structure and characteristics of the saturation point (SP) profile are compared against the constant cloud diffusivity scheme of Tiedtke (1983) and the ECMWF...
    Resource Type:
    Masters Thesis
    Full Text:
    lower boundary layer is the boundary layer turbulent flux and that the boundary turbulent mixing alone