Author(s)

C.S. Christensen, P Hummelshoj, N.O. Jensen, B. Larseir, H. Skov, K. Pilegaard and C. Lohse

Abstract

An REA System for Measurements of Terpene Fluxes Guest contribution C.S. Christensen\ P Hummelsh0f, NO Jensen^, B Larseir*, H Skov\ K Pilegaard^ and C Lohse* * National Environmental Research Institute, DK-4000 Roskilde, Denmark ^Riso National Laboratory, DK-4000 Roskilde, Denmark * European Commission - Joint Research Centre, 21020 Ispra (VA), Italy 'University ofOdense, DK-5230 Odense M, Denmark Introduction Based on a limited number of field investigations the amount of biogenic NMHC released into the atmosphere exceeds the estimates of the anthropogenic emissions by a factor of at least seven on a global scale (Guenther et al, 1995). The emitted NMHC differ in both reactivity, atmospheric lifetimes and products and especially the biogenic compounds play an important role in the photochemical formation of ozone. However, large uncertainties exist in the emission inventor

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