Odd oxygen and its atmospheric lifetime

Resumo

The concept of “odd oxygen” is considered and its atmospheric lifetime is evaluated. It is demonstrated that the modern interpretation of this concept precludes obtaining reliable data on the atmospheric lifetime of odd oxygen, which is of fundamental importance in ozonosphere chemistry. An algorithm for correctly assessing the atmospheric lifetime of odd oxygen is presented and relevant estimates for the end of the XX century are made. It is also shown that, if the lifetime of odd oxygen is comparable to or greater than the time of vertical eddy transport, the former should be replaced by a combined lifetime, taking into account the action of both photochemical and dynamic factors.