1. School of Earth and EnvironmentUniversity of Leeds Leeds UK
2. National Centre for Atmospheric Science, Fairbairn HouseUniversity of Leeds Leeds UK
3. School of Earth and Environmental Sciences, Williamson BuildingUniversity of Manchester Manchester UK
4. Icelandic Meteorological Office Reykjavik Iceland
5. National Centre for Atmospheric Science, Innovation WayUniversity of York York UK
6. Facility for Airborne Atmospheric MeasurementsCranfield University Cranfield UK