Consistency and synthesis of Pacific Ocean CO2 survey data
- NOAA Pacific Marine Environmental Laboratory
- NOAA, Seattle, WA
- Atlantic Oceanographic & Meteorological Laboratory, NOAA
- Princeton University
- University of Miami
- Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
- ORNL
- Department of Marine Science, USF
- Columbia University
- University of California, San Diego
- Woods Hole Oceanographic Institution (WHOI), Woods Hole, MA
- Meteorological Research Institute, Japan
- Brookhaven National Laboratory (BNL)/U.S. Department of Energy
- Frontier Research System for Global Change/Institute for Global Change Research, Japan
- Central Research Institute of Electric Power Industry, Japan
- CSIRO Marine and Atmospheric Research
- IFM-GEOMAR, Leibniz Institute for Marine Sciences, Chemical Oceanography, Kiel, Germany
- National Institute for Resources and Environment, Japan
- University of Hawaii
- Institute of Ocean Sciences, Climate Chemistry Laboratory, Sidney, BC Canada
Between 1991 and 1999, carbon measurements were made on twenty-five WOCE/JGOFS/OACES cruises in the Pacific Ocean. Investigators from 15 different laboratories and four countries analyzed at least two of the four measurable ocean carbon parameters (DIC, TAlk, fCO2, and pH) on almost all cruises. The goal of this work is to assess the quality of the Pacific carbon survey data and to make recommendations for generating a unified data set that is consistent between cruises. Several different lines of evidence were used to examine the consistency, including comparison of calibration techniques, results from certified reference material analyses, precision of at-sea replicate analyses, agreement between shipboard analyses and replicate shore based analyses, comparison of deep water values at locations where two or more cruises overlapped or crossed, consistency with other hydrographic parameters, and internal consistency with multiple carbon parameter measurements. With the adjustments proposed here, the data can be combined to generate a Pacific Ocean data set, with over 36,000 unique sample locations analyzed for at least two carbon parameters in most cases. The best data coverage was for DIC, which has an estimated overall accuracy of ~3 umol/kg. TAlk, the second most common carbon parameter analyzed, had an estimated overall accuracy of ~5 umol/kg. To obtain additional details on this study, including detailed crossover plots and information on the availability of the compiled, adjusted data set, visit the Global Data Analysis Project web site at: http://cdiac.ornl.gov/oceans/glodap.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 986436
- Journal Information:
- Deep Sea Research Part II: Topical Studies in Oceanography, Journal Issue: 49
- Country of Publication:
- United States
- Language:
- English
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