Ozone Evolution in the Past and Future (2nd Edition)

Dear Colleagues,

The ozone layer plays a key role in the protection of the biosphere from dangerous solar ultraviolet radiation. It also defines stratospheric temperature structure and therefore has a direct influence on the general circulation and surface climate. The discovery of the ozone hole in 1987 led to limitations in the production of halogen-containing, ozone-depleting substances (ODSs) by the Montreal Protocol and its amendments (MPAs). Thus, this measure prevented catastrophic ozone layer depletion, and most chemistry–climate models predict the recovery of the ozone layer in the middle of the 21st century. However, the ozone layer state and the effectiveness of ODS limitations by the MPAs still require continuous observations and modeling efforts to avoid any undesirable surprises. Besides ODSs, the ozone layer is sensitive to several factors such as the acceleration of meridional circulation caused by global warming; changes in solar irradiance; space weather-related events; emissions of very short-lived halogen-containing species; uncertainties in stratospheric aerosol loading caused by unpredictable volcanic eruption as well as climate intervention via artificial aerosol injections. The influence of these factors on the ozone layer in the past, present, and future is at the center of this Special Issue. Another important ozone-related problem is the expected changes to the tropospheric ozone which can have implications for human health, biology, and agriculture. Papers on these and other relevant topics are welcome in this Special Issue.

Dr. Eugene Rozanov
Guest Editor

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• ozone layer
• Montreal protocol
• stratospheric aerosol
• global warming
• solar activity
• energetic particles

• Ozone Evolution in the Past and Future in Atmosphere (10 articles)