Over the past decade he has led research in atmospheric science focusing on the understanding of air pollution emissions, transport, and impacts. Much of his research focus since 2012 has been dedicated to understanding air pollution in low income settlements in South Africa as well as the atmospheric aerosol characteristics along the west coast of Namibia. He has successfully supervised more than 40 post-graduate students in the field of atmospheric research and air pollution. Many of these students now hold prominent positions in both Government and the private sector.