Document Type : Research Paper
Authors
1 Master of Geography
2 Bachelor of Natural Geography
Abstract
Ozone was discovered by Austrian in 1840, and its basic study dates back to the early 20th century. This rare blue gas, composed of three oxygen atoms (O3), absorbs solar radiation in a spectral range of less than 0.29 microns, and in particular it fully absorbs the range between 0.22 and 0.29 microns (full absorption). Although this amount of absorption is not high, ozone is nevertheless a protective sieve that plays an important role in preventing the dangerous ultraviolet (UV) spectra’s penetration to the surface of the Earth. The Ozone’s power of absorbing radiation in wide parts of infrared ranges including the wavelength of radiations by the Earth is significant, and the reason for the rise in temperature of the stratosphere is the heat generated by absorption of ultraviolet radiation. In general, the thermal structure of the stratosphere is controlled by this gas, and its role in the life and survival of the biosphere is so vital that the Nobel Prize in chemistry in 1995 was given to three ozone researchers who spent years working to preserve this gas and prevent its destruction, and to make the world aware of its vital role.
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