François-Marie Bréon is a researcher and deputy director at the Laboratoire des Sciences du Climat et de l’Environnement. His field of research is on satellite observations of atmospheric CO2 concentration, with a focus the MICROCARB mission (microcarb.cnes.fr). François Marie-Bréon contributes to the CarbonMonitor initiative by processing daily natural gas consumption data in Europe, and disentangling the impacts of the lock-down from those of the atmospheric temperature.