Serge Planton, 64, is a retired general engineer for bridges, waters and forests. He was responsible for the climate research group for twenty years at the National Center for Meteorological Research at Météo-France (Météo-France / CNRS joint laboratory). His research in climate modeling has led him to focus more specifically on the issue of attributing the causes of observed climate change, especially in France, whether of natural or human origin. He participated in the work of the IPCC and contributed to the preparation and writing of reports on climate change and its effects in France. He is currently a member of the Météo & Climat Association, and Vice President of the Train du Climat Association.