Marie-Alexandrine Sicre is Directrice de Recherche at CNRS (Centre National de la Recherche Scientifique). She is a marine chemist by training and earned her PhD in Marine Sciences in 1987 at the Université Pierre et Marie Curie, Paris, France, on air-sea exchange of organic matter. Sicre was a postdoctoral fellow at the Woods Hole Oceanographic Institution (USA) from 1987 to 1988, where she participated to the U.S. SEAREX program with Dr. R. Gagosian until she was hired at CNRS in 1988. Sicre’s current research interest is in paleoceanography. Over the past 10 years, she has been working on the calibration of climate proxy (biomarkers) and the role of the ocean in the last millennium climate, first in the Laboratoire des Sciences du Climat et de l’Environnement (LSCE) in Gif-sur-Yvette, France (1998-2014) and since 2014 in the Laboratoire d’Océanographie et du Climat: Expérimentation et Approches Numériques (LOCEAN), in Paris. Sicre served as vice-president on the reviewing panel for the national program of marine biogeochemistry of CNRS for more than 10 years (2001 to 2012) and on the Images-France committee for 8 years. She participated in more than 10 oceanographic and paleoceanographic cruises.