Ozone concentrations in South-East England during the summer of 1976

Surface ozone concentrations at five sites in South-East England were measured during the heat wave of 1976 from 22 June to 12 July. At all sites peak hourly concentrations were the highest ever recorded in the UK and the elevated levels persisted for periods longer than any previously measured. Some discussion of the significance of the results is given together with an analysis of back-track air mass trajectories in the context of oxidant formation in North-West Europe.