Over approximately the next two years, the World Climate Research Programme’s (WCRP) Climate and the Cryosphere Project (CliC), the International Arctic Science Committee (IASC), and the Arctic Council’s Arctic Monitoring and Assessment Program (AMAP) have decided jointly to promote and support the production of an internationally authored Arctic Freshwater Synthesis (AFS) as a contribution to the 3rd International Conference on Arctic Research Planning (ICARP III), the WCRP’s Grand Challenges, and AMAP’s Adaptation Actions for a Changing Arctic. The overall goal of the AFS is to synthesize our current scientific understanding of Arctic freshwater sources, fluxes, storage, and effects, with the project structured around 5 major components: atmosphere, ocean, terrestrial hydrology, terrestrial ecology, and resources. The web page outlines the current goals of the project and features a diagram identifying some of the key issues that are likely to be the foci for the 5 components.