WTG cloud modeling with spectral decomposition of heating

  title={WTG cloud modeling with spectral decomposition of heating},
  author={Michael J. Herman and David J. Raymond},
A modified form of the relaxed weak temperature gradient (WTG) approximation is described and implemented in a cloud resolving model. In this scheme, the vertical heating profile is spectrally decomposed into normal modes. The relaxation time scale of each mode is set proportional to the corresponding vertical wave number of the mode, as would be expected if gravity waves were responsible for the relaxation. Buoyancy adjustment exhibits greater realism than in conventional relaxed WTG, with… CONTINUE READING
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