Ozone is one of the trace gases in the atmosphere. Ozone occurs up to the
height of 50 km above the ground in two atmosphere layers (in the stratosphere,
so called stratospheric ozone and in the troposphere, so called tropospheric
ozone). Approximately 90 % of atmospheric ozone is in stratosphere. The
ozone concentration reaches its maximum in the layer between 19 to 25 km
above the ground and creates the ozone layer within the stratosphere. Ozone
is very important for life on the Earth as it effectively absorbs UV
solar radiation.
The depletion of ozone layer leads to increase in penetration
of UV-B radiation, in the wave length ranging from 290 to 320 nm, which
reaches the earth surface and can effect human health (skin cancer, eye
damage), different materials and other biological systems on the Earth.
 The
causes of ozone layer depletion
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