As the Arctic warms, large amounts of carbon stored in permafrost soils are expected to be released as carbon dioxide (CO 2 ) and methane (CH 4 ). Woodwell Climate Research Center is currently partnering with scientists at NASA, Columbia University, Johns Hopkins and Montana State University in an Arctic-Boreal Carbon Synthesis activity that brings together information from in situ monitoring networks, satellites, and models to provide best estimates of CO 2 and CH 4 budgets for tundra and boreal forests in North America. The outcomes of this synthesis project will include a publication in a peer-reviewed journal and science presentations at NASA meetings. We also aim to share these findings with policymakers and the general public.