Author(s)

J.C. Guerra, J.P. Diaz, A. Diaz & F. Exposito

Abstract

We report the first simultaneous measurements of Og and NOx under the inversion layer in the Canary Islands, where the local pollution affects the level of ozone and parents substances. The composition of the mixture in this layer is characterized by a lower ozone concentration than the background level, due to the destruction process from precursor constituents. On average, this destruction process can produce a sink of Og greater than 6 ppbv in the daily average ozone concentration. This ozone drop has a seasonal variation, which is attributed to the different strengths of the photochemical mechanism of Og production and destruction can have during the year. This last hypothesis is accor

Keywords