Earth System Science Data Discussions www.earth-syst-sci-data-discuss.net 1866-3591 2 1 2009 10.5194/essdd-2-27-2009 http://www.earth-syst-sci-data-discuss.net/2/27/2009/ http://www.earth-syst-sci-data-discuss.net/2/27/2009/essdd-2-27-2009.html http://www.earth-syst-sci-data-discuss.net/2/27/2009/essdd-2-27-2009.pdf 27 61 2009-07-09 Atlantic CFC data in CARINA R. Steinfeldt rsteinf@physik.uni-bremen.de T. Tanhua J. L. Bullister R. M. Key M. Rhein J. Köhler Institut für Umweltphysik, Univerität Bremen, Bremen, Germany Leibniz-Institut für Meereswissenschaften, Marine Biogeochemie, Kiel, Germany NOAA-Pacific Marine Environmental Laboratory, Seattle, WA 98115, USA Atmospheric and Oceanic Sciences Program, Princeton Univ., Princeton, NJ 08544, USA Water column data of carbon and carbon-relevant parameters have been collected and merged into a new database called CARINA (CARbon IN the Atlantic). In order to provide a consistent data set, all data have been examined for systematic biases and adjusted if necessary (secondary quality control (QC)). The CARINA data set is divided into three regions: the Arctic/Nordic Seas, the Atlantic region and the Southern Ocean. Here we present the CFC data for the Atlantic region, including the chlorofluorocarbons CFC-11, CFC-12 and CFC-113 as well as carbon tetrachloride (CCl4). The methods applied for the secondary quality control, a crossover analyses, the investigation of CFC ratios in the ocean and the CFC surface saturation are presented. Bases on the results, the CFC data of some cruises are adjusted by a certain factor or given a "poor" quality flag. Azetsu-Scott, K., Jones, E. P., and Gershey, R. M.: Distribution and ventilation of water masses in the Labrador Sea inferred from CFCs and carbon tetrachloride, Mar. Chem., 94, 55–66, 2005. Bullister, J. L. and Weiss, R. F.: Determination of CCl3F and CCl2F2 in seawater and air, Deep-Sea Res. I, 35, 839–853, 1988. Bu, X. and Warner, M. J.: Solubility of chlorofluorocarbon 113 in water and seawater, Deep-Sea Res. I, 42, 1151–1161, 1995. Bullister, J. L. and Wisegarver, D. P.: The solubility of carbon tetrachloride in water and seawater, Deep-Sea Res. I, 45, 1285–1302, 1998. Bulsiewicz, K., Rose, H., Klatt, O., Putzka, A., and Roether, W.: A capillary-column chromotographic system for efficient chlorofluorocarbon measurement in ocean waters, J. Geophys. Res., 103(C8), 15959–15970, 1998. Huhn, O., Roether, W., Beining, P., and Rose, H.: Validity limits of carbon tetrachloride as an ocean tracer, Deep-Sea Res. I, 48, 2025–2049, 2001. Huhn, O., Roether, W., and Steinfeldt, R.: Age spectra in North Atlantic Deep Water along the South American continental slope, 10&deg; N–30&deg; S, based on tracer observations, Deep-Sea Res. I, 55(10), 1252–1276, 2008. Jeansson, E., Olsson, K. A., Tanhua, T., and Bullister, J. L.: Nordic Seas and Arctic Ocean CFC data in CARINA, Earth Syst. Sci. Data Discuss., in preparation, 2009. Johnson, G., Robbins, P. E., and Hufford, G. E.: Systematic Adjustments of Hydrographic Sections for Internal Consistency, J. Atmos. Ocean. Technol., 18, 1234–1244, 2001. Key, R. M., Tanhua, T., Olsen, A., Hoppema, M., Jutterström, S., Schirnick, C., van Heuven, S., Kozyr, A., Lin, X., Velo, A., Wallace, D. W. R., and Mintrop, L.: The CARINA data synthesis product: Introduction and overview, Earth Syst. Sci. Data Discuss., submitted, 2009. Rhein, M., Fischer, J., Smethie, W. M., Smythe-Wright, D., Weiss, R. F., Mertens, C., Min, D.-H., Fleischmann, U., and Putzka, A.: Labrador Sea Water: Pathways, CFC Inventory, and Formation Rtaes, J. Phys. Oceanogr., 32, 648–665, 2002. Roether, W., Klein, B., and Bulsiewicz, K.: Apparent loss of CFC-113 in the upper ocean, J. Geophys. Res., 106(C2), 2679–2688, 2001. Smethie, W. M., Fine, R. A., Putzka, A., and Jones, E. P.: Tracing the flow of North Atlantic Deep Water using chlorofluorocarbons, J. Geophys. Res., 105(C6), 14297–14323, 2000. Tanhua, T., Steinfeldt, R., Key, R. M., Brown, P., Gruber, N., Wanninkhof, R., Perez, F., Körtzinger, A., Velo, A., Schuster, U., van Heuven, S., Bullister, J. L., Stenardo, I., Hoppema, M., Olsen, A., Kozyr, A., Pierrot, D., Schirnick, C., and Wallace, D. W. R.: Overview of the Atlantic Ocean CARINA data and salinity measurements, Earth Syst. Sci. Data Discuss., submitted, 2009. Waugh, D. W., Hall, T. M., McNeil, B. I., Key, R., and Matear, R. J.: Anthropogenic CO<sub>2</sub> in the oceans estimated using transit time distributions, Tellus, 58B, 376–389, 2006. Walker, S. J., Weiss, R. F., and Salameh, P. K.: Reconstructed histories of annual mean atmospheric mole fraction for the halocarbons CFC-11, CFC-12 CFC-113 and carbon tetrachloride, J. Geophys. Res., 105, 14285–-14296, 2000. Yashayaev, I.: Hydrographic change sin the Labrador Sea, 1960–2005, Progr. Oceanogr., 73, 242–276, doi:10.1016/j.pocean.2007.04.015, 2007.