Chemistry of the Stratosphere

There atomic number 18 several techniques employ to investigate the chemistry of thestratosphere. The early of these is monitoring which involvesanalysing the line of work employ spectroscopy. Given that ozone absorbs in theinfra-red and ultra-violet regions of the spectrum, the niggardnesson ozone in a sample cease be calculated hold the strength of itsabsorption (figure1). This has to be carried taboo at different timesand in different conditions to ensure any(prenominal) decrease is not collectible tonatural fluctuations. [IMAGE]Figure 1 - Ozone Distribution in the AtmosphereOnce the molecules present in the stratosphere be identified,laboratory measurements can be carried disclose to investigate thereactivity of the molecules concerned and how shaft affects them. Special techniques such as flash photolysis have to be used to escapeout how fast the reactions be occurring. This technique allowedscientists to work out that the reactions breaking down and makingozone are generally occurring at the same rate and consequently thereis a steady concentration of ozone. The study of meteorology involveslearning about the movements of air currents which circle almost thelines of latitude and help gas to ruffle within a layer. Meteorologyallows scientists to obtain a better cerebration of how the reactions occurin the stratosphere as opposed to the very different conditions underwhich they take institutionalize in a laboratory.

Information from thesedifferent sources is fed into a reigning computer that produces a?model? of what scientists think happens in the stratosphere. The more data that becomes useable the closer to uni! verse the model becomes. These overall simulations can be used to disembowel predictions about futurevariations in the atmosphere. [IMAGE]In 1972, James Lovelock, who was evoke in the orbiculate spread ofgasses in the troposphere, developed a method for sensing chlorofluorocarbons inthe troposphere. He detected small concentrations of CFC 11 in ruralareas, far away from potential sources. He recognised that such astable gas would accumulate and move in the atmosphere. If you want to deposit a full essay, order it on our website: BestEssayCheap.com

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