BIPHOREP poster 2

Concentrations of biogenic VOCs and ozone at a North European site

FIGURE 0, measurement sites, 19.6K

Text and pictures are from a poster (Laurila et al. 1997b) presented in Seventh European Symposium on Physico-Chemical Behaviour of Atmospheric Pollutants in Venice, Italy, October 2.-4. 1996 by Tuomas Laurila, Hannele Hakola, Janne Rinne and Virpi Lindfors (1). .

Ozone and other photochemical oxidants are formed in the troposphere through complex interactions between the oxides of nitrogen (NOx) and volatile organic compounds (VOC). Boreal forests are a source of potentially high amounts of biogenic VOCs. As part of the BIPHOREP (Biogenic VOC Emissions and Photochemistry in the Boreal Regions of Europe, see Poster O-11), we have studied the concentrations of biogenic and anthropogenic VOC species in northern Europe. Here we present results on background isoprene and terpene concentrations, and discuss their variability according to the climatic conditions. Map from: Posch et al., Calculation and mapping of critical tresholds in Europe. RIVM report no 259101004, 1995.

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  1. Finnish Meteorological Institute, Sahaajankatu 20E, FIN-00810, Helsinki

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