United Nations Agency Report: Insufficient Ocean Carbon Research May Impact Climate Policy

The Intergovernmental Oceanographic Commission of UNESCO recently released a report indicating that there is a serious lack of understanding about how the oceans absorb and store carbon. This knowledge gap could lead to inaccuracies in current climate predictions and hinder the development of effective mitigation and adaptation strategies over the coming decades. Titled “Integrated Marine Carbon Research,” the report suggests that scientific models estimating ocean carbon uptake may differ from actual measurements, with discrepancies ranging from 10% to 20% globally, and even larger in some regions. These differences stem from limited long-term data and gaps in understanding how key processes respond to climate change. The report states that this indicates climate policies are being developed without a full understanding of future ocean changes. If the ocean’s capacity to absorb carbon weakens in the future, more CO2 will remain in the atmosphere, accelerating global warming. This will directly impact future emission targets and national climate plans. Therefore, strategies for carbon removal and ocean-based climate interventions must be based on more solid scientific evidence. In addition to summarizing the uncertainties affecting ocean carbon sink estimates, the report outlines a roadmap to promote international cooperation, strengthen ocean carbon monitoring, and update climate models accordingly, aiming to make ocean carbon science more directly supportive of climate policy. (Xinhua News Agency)