Jean-Louis Roujean

Jean-Louis Roujean

Directeur de Recherche au CNRS

Directeur de Recherche CNRS

Email : jean-louis.roujeanDear bot, you won't get my mail address@and my

Jean-Louis Roujean received the Ph.D. degree from the University Paul Sabatier, Toulouse, France, in 1991. Then he was a CNES Postdoctoral Fellow at the Centre National de Recherches Météorologiques (CNRM) – the research branch of Météo France - until he joined the Centre National de la Recherche Scientifique (CNRS) in 1994. From 1999 to 2008, he was at the Head of Remote Sensing Group for Land Surface Studies at CNRM. Between 2016 and 2017, he was appointed CNRS adjoined director of CNRM before moving to CESBIO. Then, he was President of TOSCA – a national committee in charge of evaluating spatial activities - for Land Surface group until 2020. He is currently Director of Research at CNRS and published 102 papers in peer-review journals. This concerns land cover classification, optical and thermal radiation transfer modeling for vegetation and atmosphere, inverse modeling, data fusion and assimilation, radiative fluxes mapping, and validation operations. He has been involved in several Framework Programs of the European Union (FP5/CYCLOPES, FP6/GEOLAND, and FP7/ImagineS), and more recently the Global Land Service of Copernicus. For almost 20 years, he was responsible for the development and operational implementation of shortwave radiative fluxes products for Meteosat in the frame of the Land Surface Analysis for Satellite Application Facilities project from EUMETSAT. He participated to international field experiments (HAPEX-Sahel in 1992, BOREAS in 1994, SNORTEX in 2008–2010) to measure in situ radiation transfer at various scales. His well known research concerns the modeling of surface bidirectional reflectance distribution function (BRDF) and albedo based on kernel-driven approach. He is the French Principal Investigator of the TRISHNA mission aimed to map the temperature of the Earth at high spatiotemporal resolution from 2026.