Main purpose of this lecture is to present on Vertical Structure of Ozone Cycle. The ozone–oxygen cycle is the process by which ozone is continually regenerated in Earth’s stratosphere, converting ultraviolet radiation (UV) into heat. Ozone is produced naturally in the upper atmosphere (the Ozone layer) through ultraviolet radiation. As well, lightning will produce Ozone through electrical excitation of Oxygen molecules. Ozone Generators use both forms of producing Ozone.