Dr Frédéric Parrenin is a renowned senior ice core scientist, specialized in problems related to the age of the ice archive in ice sheets (both in the ice matrix and the air bubbles). He developed probabilistic and physical models which allow to date ice cores, determine potential drilling sites and get constraints on ice flow from age information. He also developed conceptual models of Quaternay climate, which allow to determine the most important mathematical characteristics of the climate system. He authored or co-authored 75 peer-reviewed articles (H-index of 38). He was awarded the bronze medal of CNRS in 2008 for his work on the dating of ice cores. He is among the highly cited researchers in his field since 2014 (Thomson-Reuters ranking). He obtained 11 funding during the course of his career. See https://www.ige-grenoble.fr/Frederic-Parrenin for more information.