The flux of isoprene from a willow coppice plantation and the effect on local air quality [An article from: Atmospheric Environment]

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Description:
Isoprene fluxes from a Salix viminalis (willow) plantation in western Sweden were measured using the relaxed eddy accumulation (REA) technique. Fluxes of up to 0.23@mgm^-^2s^-^1 could be observed. A standard emission factor at 303K and a PAR flux of 1000@mmolm^-^2 s^-^1 was estimated to 0.98@mgm^-^2s^-^1 by using the G93 algorithm. The chemistry of an air parcel passing over a willow coppice plantation was investigated utilising a Lagrangian box model in which the measured isoprene fluxes were used as input data. Dispersion after the field was accounted for by a procedure based on the Gaussian plume model. The calculations indicate that, in most cases, the isoprene emissions have a small effect on the local air quality.