AN ALGEBRAIC EXPRESSION FOR THE EDDY DIFFUSIVITIES IN THE STABLE BOUNDARY-LAYER - A DESCRIPTION OF NEAR-SOURCE DIFFUSION

Authors
DEGRAZIA GA DEVILHENA MT MORAES OLL
Citation
Ga. Degrazia et al., AN ALGEBRAIC EXPRESSION FOR THE EDDY DIFFUSIVITIES IN THE STABLE BOUNDARY-LAYER - A DESCRIPTION OF NEAR-SOURCE DIFFUSION, Nuovo cimento della Societa italiana di fisica. C, Geophysics and space physics, 19(3), 1996, pp. 399-403
Citations number
9
Categorie Soggetti
Geochemitry & Geophysics","Astronomy & Astrophysics
Journal title
Nuovo cimento della Societa italiana di fisica. C, Geophysics and space physics → ACNP
ISSN journal
11241896
Volume
19
Issue
3
Year of publication
1996
Pages
399 - 403
Database
ISI
SICI code
1124-1896(1996)19:3<399:AAEFTE>2.0.ZU;2-S
Abstract
An algebraic formulation to evaluate the eddy diffusivities for a turb ulent Stable Boundary Layer (SBL) is described in this paper. The meth od is based on the local similarity and Taylor's diffusion theory. The eddy diffusivities are functions of distance from the source and repr esent correctly the near-source diffusion in weak winds. The agreement with the eddy diffusivities available by an integral formulation indi cates that the hypothesis of using an algebraic formulation as a surro gate for eddy diffusivities in the turbulent SBL is valid.