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    Publication Date: 2022-05-25
    Description: Author Posting. © Oceanography Society, 2010. This article is posted here by permission of Oceanography Society for personal use, not for redistribution. The definitive version was published in Oceanography 23, no. 3 (2010): 48-61, doi: 10.5670/oceanog.2010.23
    Description: Since its inception in 1960, the Intergovernmental Oceanographic Commission (IOC) has been responsible for organizing and coordinating the scientific investigation of ocean carbon. Roger Revelle (Scripps Institution of Oceanography) first articulated the principal need for international and intergovernmental coordination to address global-scale problems such as climate change when IOC was first developed. Regional to global-scale carbon studies started in earnest with the International Decade of Ocean Exploration (IDOE) and Geochemical Ocean Sections Study (GEOSECS) programs in the 1970s, but they were hampered by technological barriers that limited both the precision of carbon system measurements and the greater sampling frequency needed for a comprehensive global view. In 1979, IOC established the Committee on Climate Change and the Ocean (CCCO) with Revelle as Chair. CCCO called for a carbon observation program and sampling strategy that could determine the global oceanic CO2 inventory to an accuracy of 10–20 petagrams of carbon (Pg C). Perfection of the coulometric analysis technique of total dissolved inorganic carbon (DIC) in seawater by Ken Johnson (University of Rhode Island) and introduction of certified reference materials for DIC and alkalinity by Andrew Dickson (Scripps Institution of Oceanography) made such a study possible. The first global survey of ocean CO2 was carried out under the joint sponsorship of IOC and the Scientific Committee on Oceanic Research (SCOR) in the Joint Global Ocean Flux Study (JGOFS) and the World Ocean Circulation Experiment (WOCE) in the 1990s. With these programs and underway pCO2 measuring systems on research vessels and ships of opportunity, ocean carbon data grew exponentially, reaching about a million total measurements by 2002 when Taro Takahashi (Lamont-Doherty Earth Observatory) and others provided the first robust mapping of surface ocean CO2. Using a new approach developed by Nicolas Gruber (ETH Zürich) and colleagues with JGOFS-WOCE and other synthesized data sets, one of this article’s authors (Sabine) with a host of coauthors estimated that the total accumulation of anthropogenic CO2 between 1800 and 1994 was 118 ± 19 Pg C, just within the uncertainty goals set by JGOFS and IOC prior to the global survey. Today, ocean carbon activities are coordinated through the International Ocean Carbon Coordination Project (IOCCP). Ocean carbon measurements now accumulate at a rate of over a million measurements per year—matching the total number achieved over the first three decades of ocean carbon studies. IOCCP is actively working to combine these data into uniform data sets that the community can use to better understand ocean carbon uptake and storage. The problem of ocean acidification caused by uptake of anthropogenic CO2 is now a major target of IOC and IOCCP.
    Description: IOC’s ocean carbon activities are funded through IOC and SCOR, with major financial support provided by the US National Science Foundation through a grant to UNESCO-IOC (OCE-0715161) and a grant to the Scientific Committee on Oceanic Research (OCE-0608600) for IOCCP. The activities also benefit from generous in-kind contributions from NOAA and national carbon programs in Japan and the EU.
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
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