Yves Fouquart is a specialist in the interactions between electromagnetic radiation and the atmosphere, Professor at the University of Lille until his retirement in 2004. He actively contributed to the creation of the radiative transfer codes of the first climate models of the IPSL and Meteo France. He studied the properties of clouds and aerosols and their influence on climate. He directed the Atmospheric Optics Laboratory, participated in the Scientific Committee of the World Climate Research Program and in the drafting of the 2nd report of the IPCC published in 1995 and as such he is, with many others, co- winner of the 2007 Nobel Peace Prize.