How friction velocity is related to the air pollution
dispersion in complex mountain valleys?
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Explanation:
Within the lowest portion of the planetary boundary layer a semi-empirical log wind profile is commonly used to describe the vertical distribution of horizontal mean wind speeds. Therefore, friction velocity can be extract by knowing the wind velocity at two levels (z) (See attached figure). I am interested to know how we can relate the friction velocity with pollution dispersion in closed mountain valleys over a period of time.
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