A model for eddy diffusivity in a stable boundary layer |
| |
| Authors: | G A Degrazia O L L Moraes |
| |
| Institution: | (1) Departamento de Física, Universidade Federal de Santa Maria, 97119, Santa Maria, RS, Brasil;(2) Atmospheric Sciences Research Center, State University of New York at Albany, 100 Fuller Road, 12205 Albany, NY, USA |
| |
| Abstract: | Expressions for the vertical and the lateral diffusivity coefficients were derived from the Local Similarity Theory and the Statistical Diffusion Theory. For such, the spectral density energies for the turbulent velocities were used. The expressions here derived are compared with the diffusivity coefficients for momentum and heat suggested by Sorbjan (from the Minnesota experiments) and Nieuwstadt (from the Cabauw experiments). This comparison allows us to conclude that turbulence is equally efficient in transporting momentum, heat and contaminants in an ideally stable boundary layer. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
