Author(s)

J. Plaza, B. Artmano, M. Pujadas, S.N. Crespi & H. Cabal

Abstract

Analysis of ozone measurements in the Madrid airshed J. Plaza, B. Artmano, M. Pujadas, S.N. Crespi, H. Cabal - C/mcW (fe Me^zo Madrid, Spain ABSTRACT This paper focuses on the results of an experimental study about the formation and transport of ozone in the Madrid airshed. Data from a year survey on three rural stations show a transport of ozone, with concentrations often exceeding hourly values of 90 ppb, generated from daily photochemical reactions of precursors emitted in the metropolitan area, mainly during late spring and summer months. The mean ozone production within the urban plume is calculated on the basis of maximum downwind and upwind values on polluted days. The knowledge of prevailing surface wind flows during episodic summer conditions leads to a preliminary characterization of the dynamics of the polluted airmass. Finally, the vertical meteorological and ozone structure in episodic summer conditions is presented from soundings

Keywords