Catherine Prigent is a researcher at the Centre National de la Recherche Scientifique (CNRS) in Paris Observatory. She is a telecommunication engineer and has a PhD in physics. She worked at NASA/Goddard Institute for Space Studies, New York, for several years. She is affiliated scientist at the Water Center at Columbia University, New York. Her research covers satellite remote sensing of the Earth, for both surface and atmosphere characterization at global scale, using multiple satellite observations. It includes ‘all weather’ retrievals of land and sea surface temperatures, inundation extent, or soil moisture with passive microwaves. She has been involved in many NASA, ESA or CNES projects. In the CIMR project, her interest is in the development of retrieval methods that fully benefit from the large range of observed frequencies, for ocean, ice, and land parameters.