Accession Number : AD0742829

Title :   Effect of NO(x) on Stratospheric Ozone.

Descriptive Note : Technical memo.,

Corporate Author : JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s) : Westenberg,A. A.

Report Date : MAR 1972

Pagination or Media Count : 25

Abstract : The chemical reactions of significance in determining the photochemical equilibrium concentration of O3 in the dry stratosphere when NO(x) (i.e., the total of NO and NO2) is present are discussed. The appropriate rate equations are put into compact, nondimensional form for calculating the reduction in O3 caused by NO(x), and numerical solutions are given for a range of parameters likely to cover all cases of practical interest. A strongly catalytic effect of NO(x) in reducing O3 is indicated. Specific calculations for typical atmospheric conditions are presented which show that the inclusion of naturally present NO(x) at a mole fraction of about 10 to the -8th improves considerably the agreement between theoretical and experimental O3 profiles. The possible effects of the artificial addition of NO(x) (as by large-scale SST operations) is considered, and it is emphasized that the relative importance of this is crucially dependent on the amount of NO(x) already present naturally. (Author)

Descriptors :   (*STRATOSPHERE, *NITROGEN OXIDES), (*PHOTOLYSIS, OZONE), (*OZONE, STRATOSPHERE), REACTION KINETICS, REDUCTION(CHEMISTRY), CATALYSTS, CONCENTRATION(CHEMISTRY), SUPERSONIC AIRCRAFT

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE