| This study uses the NO-NO2-O3 equilibrium to determine the peroxy radical mixing ratio by means of the Leighton Ratio during the PARADE 11 Measurement Campaign at the Taunus Observatorium from 15.08.2011 to 09.09.2011. Based on the NO and NO2 series of measurements gathered with an enhanced chemiluminescence detector (Eco Physics CLD SR 790), ozone measurements with an UV Photometer (Thermo Electron Model 49) and the measurements of the Photolysis rate of NO2 J(NO2) (Filter Radiometer FZ Jülich) the Photostationary State was determined. From this Data the peroxy radical mixing ratio was estimated via the advanced Leighton ratio. The yielded peroxy radical mixing ratios were examined towards their sensitivity regarding variations of the PSS and their dependence on the lower limit of radiation used for calculating the Leighton ratio. As a result the estimated peroxy radical mixing ratios fit approximately to former peroxy radical measurements at the Taunus Observatorium. |
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