Korttidsstudie av sammenhengen mellom luftforurensninger og helsevirkninger i Grenland. Beregning av romlige konsentrasjonsfordelinger basert på timesvise målinger. Datagrunnlag for eksponering.

The report describes the basis of pollution data for the evaluation of exposure. Hourly spatial distributions of concentration are calculated for NOx, particles (PM 2,5), SO2, CO and Cl based on data for emission and dispersion. Calculated concentration contribution from local sources is corrected by using measured values. Hourly O3 and NO2 distributions are developed based on measurements and calculated distributions of NOx. Further data are given for 12-hour distributions of nitrate and sulphate based on spatial interpolation of measured concentrations.