Controls on Pollution Ozone Production Measurable from Surface, Aircraft, and Satellite Monitors

Robert B. Chatfield, Xinrong Ren, William H. Brune, James H. Crawford, Robert Esswein, Alan Fried, Jennifer R. Olson, Richard E. Shetter

Widespread airborne sampling of HO 2 and more broadly measurable species over North America suggests empirical measures of regional ozone production. Two variables are important: the well-known n = [NO], and f = j HCHO [HCHO], a gauge of organic oxidation rate. Ozone production functions as a semi-parametric fit F 2 ( f , n ), or a more theoretically based Q 2 ( f , n ), serve in different contexts. F 2 and Q 2 both give traditional empirical kinetic model assessment (EKMA) insights a measurable, local expression, and help define control strategies. At low f · n , O 3 production is described as f 1 ( f · n ), starting linear and dropping to sub-linear. We expect that similar f , n analysis may help separate O 3 transport from photochemistry, providing a language to express generalizations about complex kinetic systems and observations. We suggest: (i) a network of moderate-technology rural sampling stations; (ii) more broadly, analysis derived from remote sensing, mapping near-surface j HCHO , HCHO and NO 2 (related to NO).