Boundary-layer pollutant concentrations over complex terrain

✍ Scribed by Jacob Padro

• Book ID: 104629786
• Publisher: Springer
• Year: 1987
• Tongue: English
• Weight: 533 KB
• Volume: 38
• Category: Article
• ISSN: 0006-8314
• DOI: 10.1007/bf00121551

✦ Synopsis

Given the incident profiles of wind velocity and pollutant concentration, we seek to determine the 3-dimensional concentration field of a pollutant upon a region with complex terrain. The analytic solution ofthe wind velocity in a 3dimensional boundary-layer model by Walmsley et al. ( 1980) is utilized as a forcing function in the simplified concentration perturbation equation for a pollutant. The resulting solution applies to an isolated cosine-squared hill in a neutrally stratified boundary-layer Bow with a surface type which absorbs the pollutant totally. The solution shows that the concentration perturbation field is organized in accordance with the wind field. In particular, the east-west cross-section is 180" out of phase with the velocity perturbation field. The vertical profiles of the concentration perturbations for selected grid points approach the value of the upper boundary condition very rapidly.