Laurence Rouïl is the head of the “Environmental modelling and decision making” department of the Chronic risks division at INERIS. She received her Ph.D in 1995 in the field of applied mathematics. Her main area of experience is air quality modelling. Since 15 years she has developed skill and competence being the leader of research activities closely linked to operational applications. The PREV’AIR system is one of the example of such projects that she developed with her team, 10 years ago and in cooperation with other research partner, to answer to policy makers expectations taking advantage of the current know-how in the field of air pollution. She participates actively to the air quality monitoring strategy in France providing technical expertise to the Ministry in charge of the Environment. She is mandated by the Ministry as national head of delegation or competent authority in several bodies: the EMEP steering body, the FAIRMODE initiative. She is the leader of the task Force on measurement and modelling within the CLRTAP. She has been involved in European research projects which developed in this domain for a long time. She takes part to management board activities related to several research EU projects, especially the FP7 initiatives for the development of the pre-operational COPERNICUS/GMES atmosphere services, and coordinates in this framework part of regional air quality services development.