ATMOSPHERIC OZONE VARIABILITY IN THE CONTEXT OF GLOBAL CHANGE

A survey has been made of the role and place of atmospheric ozone dyna mics in both the stratosphere and troposphere in the context of global change. Impacts on the ozone layer from solar activity (extraterrestr ial solar ultraviolet irradiance variations), volcanic eruptions and h igh-flying aircraft have been discussed. Tropospheric ozone and surfac e ultraviolet irradiance changes have been considered, including relev ant biological implications. Influences of the stratospheric ozone dep letion on climate change have been discussed with emphasis on a couple d nature of ozone-climate interrelations. A necessity has been substan tiated to develop a complex ozone studies programme in the context of the World Climate Research Programme and the International Geosphere-B iosphere Programme.