Marais and Bloss
Air pollution is detrimental to public health and food security. Fine particles (PM2.5) are breathed deep into lungs and ozone is a powerful oxidant harmful to humans and crops. Cities in developing countries are expanding rapidly due to unprecedented rates of urbanisation, leading to a surge in unregulated anthropogenic emissions that go on to form ozone and PM2.5. Many cities lack the resources to maintain an air quality monitoring network, so little is known of the sources, evolution, and chemical fate of these pollutants. This limits the ability to develop effective policy to mitigate air pollution. Satellite observations provide daily coverage of the Earth’s atmosphere and so offer a unique opportunity to circumvent the lack of ground-based air quality monitoring. The overall aim of this PhD project is to constrain pollution sources and examine temporal and spatial variability of air pollution in and around rapidly urbanising cities using satellite observations of air pollutants, interpreted with a detailed chemical transport model. Target cities include Delhi (India), Kathmandu (Nepal), Ontisha (Nigeria), São Paulo (Brazil), Jakarta (Indonesia), and Johannesburg-Pretoria (South Africa).
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