Boxes ozone measurement

Box 3-2 Case Study Systematic Error in Ozone Measurement ... 

While detailed transport calculations of trace constituent distributions in the troposphere are not generally available, a number of simple box models have been fitted to measurements of seasonal fluctuations in carbon dioxide and ozone and tropospheric distributions of fission debris. These box models may not accurately represent the physical processes responsible for tropospheric motions and mixing, but the parameters used in the model do provide reasonable estimates of macroscopic mixing rates in the troposphere. 

The concentration of ozone in Tenderay process rooms and refrigerators has been determined by Ewell 9) using calibrated potassium iodide-starch paper. This method is not applicable for concentrations lower than 0.4 p,p.m. by volume. Measurement of concentrations below 0.1 p.p.m. by volume involved installing a large number of known lamps in a refrigerator and then dividing the reading to obtain a value for a box with a normal number of lamps. The potassiimi iodide-starch paper was later compared with the Crabtree and Kemp (3) atomized neutral potassium iodide method and... 

Herman and Mentall, 1982a Kylling et al., 1993 Minschwaner et al., 1995) as scattered radiation in many cases dominates the actinic flux and has an important effect on the photolysis of key chemical species (e.g., O3, NO2, HNO3). The measurement of scattered and absorbed solar radiation can provide information on the abundance of several chemical compounds (e.g., ozone, aerosols in the atmosphere) (see Box 4.2). 

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