GLOBAL TOTAL OZONE DYNAMICS - IMPACT ON SURFACE SOLAR ULTRAVIOLET-RADIATION VARIABILITY AND ECOSYSTEMS .1. GLOBAL OZONE DYNAMICS AND ENVIRONMENTAL SAFETY

An overview of the ozone issues is given including the following aspec ts: 1. The impact of tropospheric ozone on climate as a greenhouse gas (GHG), 2. Solar activity effects on TO and ozone concentration vertic al profiles in both the troposphere and stratosphere (in cases of sola r radiation absorption by the stratosphere, an unexpected problem aris es via a coupling between processes of increased absorption due to ''b ursts'' of solar activity and an enhanced destruction of ozone molecul es due to the same increase resulting in weakening UV radiation absorp tion) and 3. Surface ozone concentration variations under conditions o f polluted urban atmospheres which lead to episodes of photochemical s mog formation (dangerous for human health).