Ozone Facts

What is ozone?

ozone is a colorless gas. chemical and ozone is very active, but also to interact easily with many other materials. Close to the ground and those which cause reactions in the rubber of the judiciary and damage plant life, people and damage to lung tissue. But also components of the ozone absorbs harmful sun rays, known as "UV-B radiation" or "UV-B rays. At the top of the roof, and even time systems, a thin layer of ozone gas absorbs UV-B radiation, and conservation of living organisms.

What is the Dobson Unit?

In Dobson units (DU) is the unit of measurement of total ozone. If you take all the ozone in the column of air extending from the surface of the Earth in space, and provide all the ozone standard temperature (0 degrees Celsius) and pressure (1013,25 millibars, or air, or "ATM") in the column will be about 0,3 cm thick. Thus, in total ozone will fund - 0,3 cm. To facilitate the work units and "Dobson Unit" is to be between 0001 ATM cm. ATM - 0, 3 will do 300 cm.

What is the ozone hole?

Each year over the past few decades back in the spring in the southern hemisphere and chemical reactions to produce chlorine and bromine in the Antarctic ozone to destroy quickly and firmly. Depletion of the region known as the "ozone hole".


Ozone hole over the area and define a map of the total column ozone. Calculated from the area in the face of the earth, which is surrounded by and in accordance with the value of 220 Dobson units. Value of 220 Dobson units of ozone on the choice of a total value less than 220 Dobson units do not exist in historical observations of Antarctica before 1979. Also, direct measurements of the Antarctic ozone column level of less than 220 Dobson Units is a result of loss of ozone, chlorine and bromine compounds.