Ozone deficit” problem

Ozone bleaching technology, 21 46 for recycled pulps, 21 51-52 Ozone contactors/dispersion devices, 17 801-802 Ozone decomposition in acidic solution, 17 773 hydroxyl ion initiated, 17 771—772 Ozone deficit problem, 17 785 Ozone delignification technology, 21 46 Ozone-depleting substances, in release agents, 21 598... 

Although there has been some controversy over whether there is indeed a true ozone deficit problem (e.g., Crutzen et al., 1995), a combination of measured concentrations of OH, HOz, and CIO with photochemical modeling seems to indicate that it may, indeed, exist (Osterman et al., 1997 Crtuzen, 1997), although the source of the discrepancy remains unclear. Measurements of CIO in the upper stratosphere have found concentrations that are much smaller (by a factor of 2) than predicted by the models (e.g., Dessler et al., 1996 Michelsen et al., 1996). Because of the chlorine chemistry discussed later, model overestimates of CIO will also result in larger predicted losses of 03 and hence smaller concentrations. 

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