[citation needed] Her doctoral research used satellite observations and chemical transport models to quantify air pollutant precursor emissions of volatile organic compounds across Africa.
[2] She spent two years in Leicester before moving to University College London, where she studied the impact of fossil fuel emissions on human health.
[3] Marais was awarded a European Research Council grant to understand the understudied upper troposphere using multi-modal data.
[4] She ran a 10-year simulation to understand how rocket emissions compared with traditional sources of carbon dioxide, finding space tourism undermined environmental efforts on planet Earth.
[8] Marais has ongoing projects to measures the atmosphere above Central London, develop inventories and derive new data sets from satellite observations.