An Analytic Solution for Surface Source Sigma Z Calculations.
Abstract
An analytic method for calculating the standard deviation of cloud material vertical distribution (sigma z) has been developed. This method treats sigma z for a surface source as a function of travel distance and the vertical component of atmospheric turbulence, modified by a correction factor which represents the degree of sigma z departure from rectilinear expansion. The vertical component of atmospheric turbulence during lapse conditions is given as a function of stability parameters obtained from measured meteorological profile data. A regression equation was also developed to present turbulence as a function of stability for inversion conditions. The correction factor assumes the form of an arctangent equation which expands over a continuum of stability and travel distance. The correction factor equation fitted to Project Prairie Grass data has been successfully employed on independent sets of diffusion data collected at Dugway Proving Ground, Utah, and the National Reactor Testing Station, Idaho. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1981
- Accession Number
- ADA096041
Entities
People
- Christopher A. Biltoft