Author(s)

J.W. Bottenheim

Abstract

A four week long intensive field study was undertaken in the summer of 1993 to determine the mechanisms by which high ozone concentrations are formed in the Lower Fraser Valley, British Columbia, Canada. In this paper some of the chemistry related observations are presented that confirm the occurrence of photochemical production in the region. Comparison of Og with products of NO% oxidation indicates that this process was limited by the concentration of hydrocarbons at the time. The largely biogenic hydrocarbon isoprene was found to be responsible for up to 15% of Og production. Important primary emission rather than photochemical production of carbonyl compounds is indicated from a statistical analysis. 1 Introduction The Lower Fraser Valley (LFV) is located on the wes

Keywords