Steve’s research focuses on the processing and transport of trace gases and aerosols in the atmosphere, and their interactions with the Earth’s climate system, biopshere and society. This research is key to improving our ability to understand and predict changes in present-day and future climate, and risks to human health and ecosystems. Steve uses numerical models in conjunction with observations from aircraft, satellites and surface sites to probe fundamental chemical and physical processes controlling these interactions.

Steve is also:

• Director of the Centre of Excellence for Modelling the Atmosphere and Climate (CEMAC).
• Academician of the International Eurasian Academy of Sciences.
• Vice-chair International Arctic Science Committee Atmosphere Working Group.
• Co-chair of IGAC / IASC PACES (air Pollution in the Arctic: Climate, Environment and Societies) initiative
• Member of Arctic Council AMAP (Arctic Monitoring and Assessment Programme) Expert Group on short-lived climate forcers.

Research interests

• Chemistry of the troposphere
• Atmospheric transport of trace contituents
• Short-lived climate pollutants in the Arctic
• Interactions between atmospheric composition, the biosphere, climate and air quality