Ozone Holes

ŠIAULIŲ KOLEGIJOS
VERSLO IR TECHNOLOGIJŲ FAKULTETO

Humanitarinių mokslų studijų katedra

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Gamtotvarkos vadybos programos ištęstinių studijų 1 kurso studento

Ozone holes
Referatas

      Tikrino: asist. Domas Auga

Šiauliai, 2009
INTRODUCTION
Ozone Hole Healing Could Cause Further Climate Warming
INTRODUCTION
      The atmosphere is a complex, dynamic natural gaseous system that is essential to support life on planet earth. Stratospheric ozone depletion due to air pollution has long been recognized as a threat to human health as well as to the earth's ecosystems. Worldwide air pollution is responsible for large numbers of deaths and cases of respiratory disease. Enforced air quality standards, like the Clean Air Act in the United States, have reduced the presence of some pollutants. While major stationary sources are often identified with air pollution, the greatest source of emissions are actually mobile sources, principally the automobile. There are many available air pollution control technologies and urban planning strategies available to reduce air pollution; however, worldwide costs of addressing the issue are high. The ozone layer is the part of the Earth's atmosphere which contains relatively high concentrations of ozone (O3)."Relatively high" means a few parts per million - much higher than the concentrations in the lower atmosphere but still small compared to the main components of the atmosphere.Although the concentration of ozone in the ozone layer is very small, it is vitally important to life because it absorbs biologically harmful ultraviolet (UV) radiation from the Sun.The "thickness" of the ozone layer - that is, the total amount of ozone in a column overhead - varies by a large factor worldwide, being in general smaller near the equator and larger as one moves towards the poles. It also varies with season, being in general thicker during the spring and thinner during the autumn.
Ozone Hole Healing...