The flux of isoprene from a willow coppice plantation and the effect on local air quality
Artikel i vetenskaplig tidskrift, 2005
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 mu g m(-2) s(-1) could be observed. A standard emission factor at 303 K and a PAR flux of 1000 mu mol m(-2) s(-1) was estimated to 0.98 mu g m(-2) s(-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.
MODEL
micrometeorology
RATE
TEMPERATURE
REA
ORGANIC-COMPOUND EMISSIONS
LIGHT
OZONE
VARIABILITY
TOXICITY
RELAXED EDDY ACCUMULATION
Salix viminalis
isoprene emission
GRADIENT
modelling
MECHANISM
Författare
Marcus Olofsson
Göteborgs universitet
B Ek-Olausson
N. O Jensen
Sarka Langer
Evert Ljungström
Göteborgs universitet
Atmospheric Environment
Vol. 39 11 2061-2070
Ämneskategorier
Kemi
DOI
10.1016/j.atmosenv.2004.12.015