... the carbon in the organic material in the decomposed organisms oxidises it may partially oxidise to form carbon monoxide (summarised in figure 1.3) The best conditions for photochemical smog formation are during the summer. High levels of sunshine allow increased photodissociation of chemicals such us NOx producing secondary pollutants. The light winds and high atmospheric pressure keep the stagnant air mass of pollution from dispersing and therefore pollution levels remain in high concentrations. Pollutants stay closer to ground level and mix more easily and light prevailing winds are able to transport the pollutants close to the grounds surface to other regions (Summarised in figure 1.4) High concentrations of hydrocarbons and nitrogen oxides are also required as they are primary pollutants, which will be able to initiate the smog formation. These pollutant concentration levels can be achieved in areas of large mass of traffic and combustion processes in industrial regions. Made from the decomposition ...

See this essay or coursework document in full right now