Stratospheric Turbulence and Vertical Effective Diffusion Coefficients
Environmental research papers
AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA
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Computations of the observed frequency distribution of the magnitudes of vertical shears of horizontal winds between 5 and 20 km altitude are reported. The probability distribution of turbulent layers for various values of vertical thickness is discussed. An effective vertical-diffusion coefficient, Ke, is estimated from a simple model using this empirical turbulence probability distribution. Specifically, the authors calculate the effect of clear-air turbulence CAT upon vertical transport, using a model consisting of a vertical column of thin, randomly-spaced mixing turbulent layers separated by thick non-mixing atmospheric layers.
- Atmospheric Physics