Changes between Version 37 and Version 38 of doc/tec/bc


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Timestamp:
Jul 4, 2017 2:45:53 PM (8 years ago)
Author:
hoffmann
Comment:

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  • doc/tec/bc

    v37 v38  
    203203In order to prevent gravity waves from being reflected at the top boundary, a sponge layer (Rayleigh damping) can be applied to all prognostic variables in the upper part of the model domain ([#klemp1978 Klemp and Lilly, 1978]). Such a sponge layer should be applied only within the free atmosphere, where no turbulence is present.
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    205 The model is initialized by horizontally homogeneous vertical profiles of potential temperature, specific humidity (or a passive scalar), and
     205The model is initialized by horizontally homogeneous vertical profiles of potential temperature, water vapor mixing ratio (or a passive scalar), and
    206206the horizontal wind velocities. The latter can be also provided from a 1-D precursor run (see Sect.[wiki:doc/tec/1dmodel 1-D model for precursor runs]). Uniformly distributed random perturbations with a user-defined amplitude can be imposed to  the fields of the horizontal velocities components to initiate turbulence.
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