Olivier Pujol is a doctor in atmospheric physics, qualified to direct research and a physics associate. After studies at the Université Paul Sabatier in Toulouse and a thesis at the Laboratoire d'aérologie (Observatoire Midi-Pyrénées) on precipitating systems and their observation by microwave remote sensing, defended in 2006, he became a lecturer at the Université de Lille, at Laboratoire d'optique atmosphérique. There, his research activities extend to the study of water vapour, aerosol-cloud couplings and light-matter interaction in the field of atmospheric optics. He has also collaborated with the industrial world (Thalès) and is a co-inventor of patents. In 2013, he obtained the HDR. He teaches in Bachelor's degree, in preparation for the external agrégation of physics and in the international Master 2 "Atmospheric Environment" in the unit "Physics of the atmosphere". He participates in a national competition as an author of physics subjects and, for the past ten years, has also co-authored several higher education books.