SPECTRAL TRANSFER OF CONCENTRATION WITH PHOTOCHEMICAL REACTION FOR URBAN AIR POLLUTION

摘要

Now a days it is well recognized that the transport of chemical species through the Planetary Boundary Layer of the atmosphere is a key of global change problem (Lenschow and Hicks, 1989) and needs more reliable parameterization (Wyngaard, 1999). Recently, in air pollution meteorology, the usual practice of neglecting the concentration correlation in photochemical reaction has been recognized as a source of serious error. The practical applications of concentrations of chemical flow occur whenever the process of turbulent flow and chemical reaction are merge, particularly when the reactant species are nonuniformly distributed. The urban air pollution is an interesting case of this problem because the pollutants are introduced in the atmosphere at the various locations so that large concentration inhomogeneities exist before the pollutants are brought together by movements and mixing large scale masses by atmospheric turbulent winds. This is common in the case of auto exhausts when the pollutants are discharged and subsequently mixed and react in the atmosphere. So it is important to study the various aspects of the concentration correlation with photochemical reaction.