Ann continues to teach atmospheric physics to students in a number of Schools. Her research work remains at the interface between disciplines, with radiation and (sun)light as a central theme. She has strong collaborations with the Medical School and photobiologists as well as modelling and experimental work in the atmospheric sciences. A topical interest in which she specialises is vitamin D synthesis by the skin after exposure to (solar) UV radiation, while other work explores, for example, the scattering of radiation by ice crystals. The multidisciplinarity of Ann’s work is also apparent in the external positions she held. In addition to several roles at the World Meteorological Organisation (WMO), she was President of CIE (Commission Internationale de l’Eclairage, or International Commission for Illumination), 2011-15. She is currently UV Working Group lead for the International Radiation Commission and member of the Editorial Board for the WMO Commission for Instruments and Methods of Observation (CIMO) Guide.