Sylvie Joussaume is an expert in climate modelling within CNRS. She has been involved in several assessment reports of the Intergovernmental Panel on Climate. Change. She coordinates since 2009 the European infrastructure project, IS-ENES, which integrates the European climate models in a common research infrastructure dealing with models, model data and high-performance computing for climate (http://is.enes.org), and which has integrated the EGI federation in 2020. She has been chair of the PRACE scientific committee in 2015. She also chairs the scientific evaluation committee of GENCI, the French national HPC facilities, and the scientific committee of ORAP that promotes high-performance computing in France.