Author(s)

E.G. McDonald-Duller

Abstract

Dry deposition of acidic species and oxidants enhances the deterioration of vulnerable architectural materials. The dry deposition velocity is a net mass- transfer coefficient that can be used to compare dry deposition rates of atmospheric species under different surface and meteorological conditions. Photochemical reaction kinetics are typically not incorporated in conventional dry deposition resistance models. Rapid gas-phase reactions in urban environments may modify flux-gradient relationships and, hence, the dry deposition fluxes of acidic species and oxidants to vulnerable surfaces. The current study examines the effects of surface moisture, friction velocity, and photochemical reactions on the effective dry deposition velocities of nitrogen dioxide, nitri

Keywords