School of Earth and Environment

Stephen Arnold Dr Stephen Arnold

Associate Professor of Atmospheric Composition

Telephone number: +44(0) 113 34 37245
Email address:
Room: 11.102

Affiliation: Institute for Climate and Atmospheric Science

Link to personal page


My 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. I use numerical models in conjunction with observations from aircraft, satellites and surface sites to probe fundamental chemical and physical processes controlling these interactions.


  • BA, MSci Natural Sciences (Cambridge)

  • PhD Atmospheric Science (Leeds)


  • 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.
  • Member Royal Society of Chemistry.
  • Member European Geosciences Union.
  • Member American Geophysical Union.

Research Interests

  • Tropospheric photochemistry.
  • Short-lived climate pollutants in the Arctic.
  • Organic species in the remote atmosphere.
  • Ozone-vegetation interactions.
  • Atmospheric Chemistry-Earth system interactions.

Teaching Interests

I teach on a number Level 2 and Level 3 modules on the topics of atmospheric chemistry and climate science. In addition, I teach on a Level 1 field course examining pollution transport in a river in the Lake District.

Support duties

I am Director of the Centre of Excellence for Modelling the Atmosphere and Climate (CEMAC).