ozon layer

By noahderese

  • ozon layer is first identifyed

    the ozone layer was first identifyed and discoved in 1800

  • ozone

    The Ozone shield protects the earth from much of the sun's harmful radiatio and helps keeping the earth more insulated

  • more discovery

    was discovered by by Christian Friedrich Schönbein in 1839 - 1840 Gordon Miller Bourne Dobson did who did important work on ozone

  • ozone layer

    The ozone layer was discovered in 1913 by the French physicists Charles Fabry and Henri Buisson

  • measuring ozone

    a british scientist, G.M.B Dobson measuring the amount of ozone in the atmosphere.

  • antartica

    Antarctica was first noticed in the 1970s by a research group

  • banned

    the use of CFC propellants in spray cans was banned in the U.S. In the 1980s

  • Montoring the atmoshphere

    Between 1981 and 1983, a research group from the british antartic survey was montiring the atmospher

  • measurments

    the first measurements were taken in 1985

  • the ozone hole

    the ozone hole was discovered in 1985 it is a thinning of the layer near the poles of the ozone during winters. The cause is the lack of energy from the sun reaching the layer. Ozone is being destroyed
  • Period: to

    activites

    Evidence that human activities affect the ozone layer has been building up over the last 20 years

  • CFC's

    chemicals containing atoms of carbon, chlorine, and fluorine. They are used in the manufacture of aerosol sprays, and it destroys the ozone layers