The United Nations Decade of Ocean Science for Sustainable Development is soon to begin, in 2021. Aiming at achieving the Sustainable Development Goals (SDGs), this comprehensive process is stimulating activities of acquiring new knowledges about the ocean as well as the creation and transformational application of innovative technologies; within this process, the international research community engaged in the elucidation of changes and variability in ocean carbon and its projections is working on problem-solving initiatives based on the enhancement of scientific knowledges and its increased applications.