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Active Research Projects

Air quality and climate change in Africa

With support from the National Science Foundation and the US State Department, we have started an air quality monitoring network in Kinshasa, DR Congo, a megacity with population over 11 million which suffers from poor air quality yet has no monitoring infrastructure. Other projects include air quality knowledge capacity building in Accra, Ghana (partner with Ghana EPA), sensor deployments in Nairobi, Kenya, Kampala, Uganda, and Lomé, Togo, and using models and remote sensing techniques in India, China, and sub-Saharan Africa.

Regional climate response to changes in regional aerosol emissions

We are key members of the Regional Aerosol Model Intercomparison Project, or RAMIP as well as the Heterogeneous Climate Forcing project or HETCLIF. Some topics we have worked on in the past include: 1) The impact of changes in emissions in specific regions on local and remote climate, 2) Aerosol impacts on clouds and precipitation and 3) The effect of absorbing aerosols on tropical monsoon systems.

News

August 01, 2025

New project on air quality monitoring in Queens!

Happy to announce a new project funded here at Columbia titled "Clean Air Monitoring Interventions for Empowering Communities in Severely Under-Monitored Sections of Queens County, New York". We will be working with community groups, schools, nonprofits, and others in The World's Borough to drive equitable, actionable air pollution solutions using ground-based monitoring, satellite retrievals, and machine learning. More details below!

https://worldprojects.columbia.edu/clean-air-monitoring-interventions-empowering-communities-severely-under-monitored-sections-queens