Comparison of modelled and measured ozone concentrations and meteorology for a site in south-west Sweden: implications for ozone uptake calculations.
Measurements of ground-level ozone concentrations and meteorology (temperature, vapour pressure deficit (VPD), solar radiation) at the monitoring site Ostad (south-west Sweden) were compared to data from the corresponding grid in the EMEP photo-oxidant model for 1997, 1999 and 2000. The influence of synoptic weather on the agreement between model and measurements was studied. Implications of differences between modelled and observed inputs for ozone flux calculations for wheat and potato were investigated. The EMEP model output of ozone, temperature and VPD correlated well with measurements during daytime. Deviations were larger during the night, especially in calm conditions, attributed to local climatological conditions at the monitoring site deviating from average conditions of the grid. These differences did not lead to significant differences in calculated ozone uptake, which was reproduced remarkably well. The uptake calculations were sensitive to errors in the ozone and temperature input data, especially when including a flux threshold.
Klingberg
Jenny
J
Department of Plant and Environmental Sciences, Göteborg University, P.O. Box 461, 405 30 Göteborg, Sweden. jenny.klingberg@dpes.gu.se
Danielsson
Helena
H
Simpson
David
D
Pleijel
Håkan
H
D000392:Air Movements; D000393:Air Pollutants / Q000032:analysis* / Q000378:metabolism; D003198:Computer Simulation; D004784:Environmental Monitoring / Q000379:methods; D008685:Meteorological Concepts; D008962:Models, Theoretical; D010083:Oxidants, Photochemical / Q000032:analysis* / Q000378:metabolism; D010126:Ozone / Q000032:analysis* / Q000378:metabolism; D010944:Plants / Q000378:metabolism; D013548:Sweden
D000393:Air Pollutants; D010083:Oxidants, Photochemical; D010126:Ozone