GLOBAL TOTAL OZONE DYNAMICS - IMPACT ON SURFACE SOLAR ULTRAVIOLET-RADIATION VARIABILITY AND ECOSYSTEMS

A review has been made recently studying global total ozone changes (i ncluding stratospheric and troposphere components), as well as biologi cally active surface solar ultraviolet (W-B) radiation variations on t he basis of satellite and conventional surface observations (KONDRATYE V and VAROTSOS, Part I). In the aforementioned review, relevant impact s on terrestrial and aquatic ecosystems, as well as on biochemical cyc les and man, have been discussed. Special attention has been paid to t he analysis of observed and potential impacts of enhanced UV-B radiati on on biogeochemical cycles and the chemical composition of the atmosp here. In this context, possibilities remote sensing techniques applica tions aimed at obtaining more complete information on atmospheric conc entrations of various trace gases determining the ozone content have b een considered in the present paper.