Aeronomic reactions of ozone in the trophosphere and stratosphere

Daytime rates of about 60 chemical and photochemical reactions, which can affect the concentration of ozone (03) in the troposphere and stratosphere, have been computed to examine the role of each of them in the production and destruction mechanisms of O3. Efficiency of various catalytic cycles causing O3 loss have also been studied. The behaviour of atomic oxygen, which is a key element in regulating O3 concentration in the atmosphere has been studied in detail. Results obtained show that, during daytime, the loss of O3 due to various chemical reactions can be neglected when compared to its loss due to photodissociation in different bands. Catalytic chains of NO, OH, HO2 and ClO are not much effective in sunlight