The Ocean Carbon and Biogeochemistry (OCB) program is a coordinating body for the U.S. research community that focuses on the ocean's role as a component of the global Earth system, bringing together research in geochemistry, ocean physics, and ecology. The fourth annual Ocean Carbon and Biogeochemistry summer workshop convened 147 participants at Woods Hole Oceanographic Institution, in Massachusetts.The workshop opened with a session on the next U.S. Carbon Cycle Science Plan (CCSP) that included presentations highlighting the priorities of the next CCSP and providing atmospheric, oceanic, terrestrial, social science, and decision support perspectives. An interdisciplinary panel of CCSP working group members then fielded audience questions and solicited feedback from the OCB community, which focused primarily on CCSP scope, ocean research and observing system priorities, and more effective integration with social science and decision support communities.