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Techniques + methods used to investigate the chemistry of the stratosphere And links to CFCs
Member rating: No Rating | Words: | Submitted: Thu Sep 04 2003
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OPEN BOOK PAPER 1997 TECHNIQUES + METHODS USED TO INVESTIGATE THE CHEMISTRY OF THE STRATOSPHERE AND LINKS TO CFCS It is now an internationally accepted scientific fact that the reactions involving man-made CFCs emitted are responsible for some ozone depletion in the stratosphere. This can be proved in numerous different ways, one early way was to send up helium balloons or planes, With this we are can find out what molecules are present in the stratosphere by the use of infra-red and ultra-violet absorption spectra [1]. All chemicals have different characteristic absorption spectrums. Ozone has a specific absorption range at Ultraviolet radiation of wavelengths below 360nm. By analysing the strength of absorption at these wavelengths, we can work out the concentration of the Ozone present. Measurements are taken in a wide variety of conditions to give us an insight into the normal composition of the stratosphere, but to measure a rate of...
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