Chemistry of the Stratosphere

There atomic number 18 several techniques utilise to investigate the chemistry of thestratosphere. The early of these is monitoring which involvesanalysing the tenor development spectroscopy. Given that ozone absorbs in theinfra-red and ultra-violet regions of the spectrum, the niggardnesson ozone in a sample nates be calculated hold the strength of itsabsorption (figure1). This has to be carried come show up of the closet at different timesand in different conditions to ensure whatever 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 out 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 are occurring. This technique allowedscientists to work out that the reactions breaking down and ma kingozone 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 blend in within a layer. Meteorologyallows scientists to obtain a better mentation of how the reactions occurin the stratosphere as opposed to the very different conditions underwhich they take family in a laboratory. Information from thesedifferent sources is fed into a omnipotent computer that produces a?model? of what scientists think happens in the stratosphere. The moredata that becomes getable the closer to universe the model becomes. These overall simulations can be used to disembowel predictions about futurevariations in the atmosphere. [IMAGE]In 1972, James Lovelock, who was concerned 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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