Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4444816 | Atmospheric Environment | 2006 | 12 Pages |
Abstract
A simple Gaussian dispersion model was used to interpret the ground-level concentrations measured in the experiment. The model uses expressions for plume spreads that depend on meteorological information at a height of 50Â m from the surface. The vertical spread of the plume is limited to the height of the shear generated boundary layer. The height of this boundary layer is proportional to Ïw/N, where Ïw is the standard deviation of the vertical velocity fluctuations, and N is the Brunt-Vaisala frequency of the stable layer capping the surface-based convective layer. This result is based on indirect evidence: model performance improves significantly when vertical plume spread is limited to this height.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Atmospheric Science
Authors
Jing Yuan, Akula Venkatram, Vlad Isakov,