Notes regarding: Outline of Air Pollution Dispersion -> Characterization of Atmospheric Turbulence
- I think it would be important/necessary to mention in this section that scale dependent dispersion is a fundamental principle
- Big plumes spread fast in x direction, medium in z direction
- Small plumes spread slowly in x, and very slow in z
- This can happen for any flow if the initial size of clouds are smaller than the largest eddies that are causing this mixing
- In the atmosphere, there is no limit on the size of the mixing motions, so bigger clouds will experience larger and stronger mixing motions This principle comes from the general properties governing variance = 2Kt, from [1]
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- ^ Walton, John (April 1973). "Scale-Dependent Diffusion". Journal of Applied Meteorlogy: 548.