Our studies processes important to climate change and air quality in the troposphere and lower stratosphere – the lowest 20 km of the Earth’s atmosphere. We are one of the largest such groups in UK universities, and have extensive collaborative links with leading atmospheric sciences groups world-wide. We have a strong experimental programme, with a range of state-of-the-art facilities for field and laboratory measurements. To complement the measurements we run numerical models on a variety of scales using code developed at Manchester as well as national and international standard models. The Centre for Atmospheric Science is part of the successful School of Earth, Atmospheric and Environmental Sciences and currently consists of approximately 70 staff and postgraduate students.