Ozone photochemistry during the UK heat wave of August 2003

This is the authors' final draft of the paper subsequently published in a shortened form and with a modified title, as Atmospheric Environment, 2006, 40(39), pp.7598-7613. The definitive version ("Ozone photochemistry and elevated isoprene during the UK heatwave of August 2003") is available from http://www.sciencedirect.com/science/journal/13522310 ).