Philip Stier is Professor of Atmospheric Physics in the Department of Physics and the Director of the Intelligent Earth UKRI AI Centre for Doctoral Training in AI for the Environment at the University of Oxford. He also heads the Climate Processes Group and serves on the steering group of the Oxford Climate Research Network.
Philip's research addresses physical climate processes in the context of anthropogenic perturbations to the Earth system as the underlying cause of climate change and air pollution. His key interests lie in clouds and their key role in the climate system. Aerosols are small liquid or solid particles suspended in air of both anthropogenic and natural origin. Cloud droplets form on aerosol particles, so human-made changes in aerosol (precursor) emissions also affect the physics of clouds (aerosol-cloud interactions). In addition, clouds respond to their changing environment (cloud feedbacks). These effects constitute the largest uncertainties in current predictions.
As Director of the Intelligent Earth CDT, Philip is excited to oversee the training and development of a new generation of environmental data scientists, tackling some of the most challenging questions facing Earth.