adverseeffects aeronomia aerosols air airpollutants atmosphere atmosphericchemistry atmosphericozone atmosphericphysics atmosphericprotection/airqualitycontrol/airpollution aufsatzsammlung chlorofluorocarbons climate climaticchanges climatology congresses effectofclimateon effectofhumanbeingson effectofradiationon effectsofradiation/radiationprotection emissiondensityzoning environment environmentalaspects environmentalhealth environmentalphysics environmentalprotection environmentalsciences europe fluorocarbons general geosciences halocarbons humanbeings kk8083 laserobservations mensch mesosphere meteorology meteorology/climatology middleatmosphere nature observations opticalradar organohalogencompounds ozon ozone ozonelayer ozonelayerdepletion physicalgeography physiologicaleffect plants pollution remotesensing solarradiation stratospha˜re troposphere ultravioletradiation ultravioletrays wa30c6392000 wa754a84571979