[en] A well-documented, publicly available, global data set of surface ocean carbon dioxide (CO2) parameters has been called for by international groups for nearly two decades. The Surface Ocean CO2 Atlas (SOCAT) project was initiated by the international marine carbon science community in 2007 with the aim of providing a comprehensive, publicly available, regularly updated, global data set of marine surface CO2, which had been subject to quality control (QC). Many additional CO2 data, not yet made public via the Carbon Dioxide Information Analysis Center (CDIAC), were retrieved from data originators, public websites and other data centres. All data were put in a uniform format following a strict protocol. Quality control was carried out according to clearly defined criteria. Regional specialists performed the quality control, using state-of-the-art web-based tools, specially developed for accomplishing this global team effort. SOCAT version 1.5 was made public in September 2011 and holds 6.3 million quality controlled surface CO2 data points from the global oceans and coastal seas, spanning four decades (1968–2007). Three types of data products are available: individual cruise files, a merged complete data set and gridded products. With the rapid expansion of marine CO2 data collection and the importance of quantifying net global oceanic CO2 uptake and its changes, sustained data synthesis and data access are priorities.
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Pfeil, B. Br
Olsen, A. Br
Bakker, D. C. E. Br
Hankin, S. Br
Koyuk, H. Br
Kozyr, A. Br
Malczyk, J. Br
Manke, A. Br
Metzl, N. Br
Sabine, C. L. Br
Akl, J. Br
Alin, S. R. Br
Bates, N. Br
Bellerby, R. G. J. Br
Borges, Alberto ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Unité d'Océanographie chimique (UOC)
Antonov, J. I., Locarnini, R. A., Boyer, T. P., Mishonov, A. V., and Garcia, H. E.: World Ocean Atlas 2005, in: Volume 2: Salinity, edited by: Levitus, S., NOAA Atlas NESDIS 62, US Government Printing Office, Washington, DC, 182 pp., 2006.
Archer, D., Kheshgi, H., and Maier-Reimer, E.: Multiple timescales for neutralization of fossil fuel CO2, Geophys. Res. Lett., 24, 405-408, 1997. (Pubitemid 127553176)
Atlantic Oceanographic and Meteorological Laboratory (AOML): Underway pCO2 Systems workshop, AOML National Oceanographic and Atmospheric Administration, Miami, 2-3 October 2002, http://www.aoml.noaa.gov/ocd/gcc/ uwpco2/workshops/ (last access: 13 March 2012), 2002.
Bakker, D. C. E., Etcheto, J., Boutin, J., Dandonneau, Y., and Merlivat, L.: Variability of surface water fCO2 during seasonal upwelling in the equatorial Atlantic Ocean as observed by a drifting buoy. J. Geophys. Res., 106, 9241-9253, doi:10.1029/1999JC000275, 2001.
Bakker, D. C. E., Hoppema, M., Schröder, M., Geibert, W., and de Baar, H. J. W.: A rapid transition from ice covered CO2-rich waters to a biologically mediated CO2 sink in the eastern Weddell Gyre, Biogeosciences, 5, 1373-1386, doi:10.5194/bg-5-1373-2008, 2008.
Bakker, D. C. E., Pfeil, B., Olsen, A., Metzl, N., Sabine, C. L., Hankin, S., Koyuk, H., Kozyr, A., Malczyk, J., Manke, A., and Telszewski, M.: Global data products help assess changes to the ocean carbon sink, Eos, 93, 125-126, doi:10.1029/2012EO120001, 2012.
Cooper, D. J., Watson, A. J., and Ling, R. D.: Variations of pCO2 along a North Atlantic shipping route (UK to the Caribbean): A year of automated observations, Mar. Chem., 60, 147-164, 1998. (Pubitemid 28222650)
Copin-Montégut, C.: A new formula for the effect of temperature on the partial pressure of CO2 in seawater, Mar. Chem., 25, 29-37, 1988.
Copin-Montégut, C.: Corrigendum. A new formula for the effect of temperature on the partial pressure of CO2 in seawater, Mar. Chem., 27, 143-144, 1989.
DeGrandpré, M. D, Baehr, M.W., and Hammar, T. R.: Development of an optical chemical sensor for oceanographic applications: the submersible autonomous moored instrument for seawater CO2, in: Chemical sensors in oceanography, edited by: Varney, M. S., Gordon and Breach Science Publishers, Amsterdam, the Netherlands, 123-142, 2000.
Dickson, A. G., Sabine, C. L., and Christian, J. R. (Eds.): Guide to best practices for ocean CO2 measurements, PICES Special Publication 3, IOCCP Report 8, 191 pp., 2007.
Eaton, B., Gregory, J., Drach, B., Taylor, K., Hankin S., Caron, J., Signell, R., Bentley, P., Rappa, G., Höck, H., Pamment, A., and Juckes, M.: NetCDF Climate and forecast (CF) metadata conventions version 1.6, http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.6/ cf-conventions. html#discrete-sampling-geometries, 2011.
ETOPO2: 2-minute Gridded Global Relief Data (ETOPO2v2), US Dept. of Commerce, National Oceanic and Atmospheric Administration, National Geophysical Data Center, http://www.ngdc. noaa.gov/mgg/fliers/06mgg01.html, 2006.
Friederich, G. E., Ledesma, J., Ulloa, O., and Chavez, F. P.: Air-sea carbon dioxide fluxes in the coastal southeastern tropical Pacific, Prog. Oceanogr., 79, 156-166, 2008.
Friedlingstein, P., Cox, P., Betts, R., Bopp, L., Von Bloh, W., Brovkin, V., Cadule, P., Doney, S., Eby, M., Fung, I., Govindasamy, B., John, J., Jones, C., Joos, F., Kato, T., Kawamiya, M., Knorr, W., Lindsay, K., Matthews, H. D., Raddatz, T., Rayner, P., Reick, C., Roeckner, E., Schnitzler, K.-G., Schnur, R., Strassmann, K., Weaver, A. J., Yoshikawa, C., and Zeng, N.: Climatecarbon cycle feedback analysis, results from the C4MIP model intercomparison, J. Climate, 19, 3337-3353, 2006. (Pubitemid 44177898)
Gordon, L. L. and Jones, L. B.: The effect of temperature on carbon dioxide partial pressure in seawater, Mar. Chem., 1, 317-322, 1973.
Goyet, C., Millero, F. J., Poisson, A., and Shafer, D. K.: Temperature dependence of CO2 fugacity in seawater, Mar. Chem., 44, 205-219, 1993. (Pubitemid 24430328)
Gruber, N., Körtzinger, A., Borges, A., Claustre, H., Doney, S. C., Feely, R. A., Hood, M., Ishii, M., Kozyr, A., Monteiro, P., Nojiri, Y., Sabine, C. L., Schuster, U., Wallace, D. W. R., and Wanninkhof, R.: Plenary paper: Towards an integrated observing system for ocean carbon and biogeochemistry at a time of change, in: Proceedings of OceanObs'09: Sustained ocean observations and information for society, Vol. 1, Venice, Italy, 21-25 September 2009, edited by: Hall, J., Harrison, D. E., and Stammer, D., ESA Publication WPP-306, 18 pp., doi:10.5270/OceanObs09, 2010.
Hood, E. M., Merlivat, L., and Johannessen, T.: fCO2 variations and air-sea flux of CO2 in the Greenland Sea gyre using high frequency time series from CARIOCA drift-buoys, J. Geophys. Res., 104, 20571-20583, doi:10.1029/1999JC900130, 1999.
ICOADS: International Comprehensive Ocean-Atmosphere Data Set, 1 Degree, Release 2.5. NOAA, ESRL PSD, Boulder, Colorado, http://www.esrl.noaa.gov/psd/ data/gridded/data. coads.1deg.html, 2008.
IOCCP: Ocean surface pCO2, data integration and database development workshop, National Institute for Environmental Studies, Tsukuba, Japan, 14-17 January 2004, IOCCP Report 2, www.ioccp.org, 2004.
IOCCP: Surface Ocean CO2 Variability and Vulnerabilities Workshop. UNESCO, Paris, France, 11-14 April 2007. IOCCP Report 7, www.ioccp.org, 2007.
IOCCP: Surface Ocean CO2 Atlas Project, UNESCO, Paris, France, IOCCP Report 9, www.ioccp.org, 2008.
IOCCP: Joint workshop SOCAT Coastal Regional Group & COST Action 735 Working Group 3. IFM-GEOMAR, Kiel, Germany, 22-23 January 2009, www.ioccp.org, 2009a.
IOCCP: SOCAT Atlantic and Southern Oceans Regional Meeting, University of East Anglia, Norwich, UK, 25-26 June 2009, IOCCP Report 13, www.ioccp.org, 2009b.
IOCCP: SOCAT Pacific Regional Meeting, National Institute for Environmental Studies, Tsukuba, Japan, 18-20 March 2009, IOC Workshop Report 221, IOCCP Report 12, www.ioccp.org, 2010a.
IOCCP: Southern and Indian Ocean SOCAT Workshop, CSIRO Marine Laboratories, Hobart, Tasmania, Australia, 16-18 June 2010, IOCWorkshop Report 234, IOCCP Report 21, www.ioccp. org, 2010b.
IOCCP: Surface Ocean CO2 Data-to-Flux workshop. UNESCO, Paris, France, 12-13 September 2011, www.ioccp.org, IOCCP Report, in preparation, 2013.
Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, S., White, G.,Woollen, J., Zhu, Y., Chelliah, M., Ebisuzaki, W., Higgins, W., Janowiak, J., Mo, K. C., Ropelewski, C., Wang, J., Leetmaa, A., Reynolds, R., Jenne, R., and Joseph, D.: The NCEP/NCAR 40-year reanalysis project, B. Am. Meteorol. Soc., 77, 437-470, 1996.
Körtzinger, A., Thomas, H., Schneider, B., Gronau, N., Mintrop, L., and Duinker, J. C.: At-sea intercomparison of two newly designed underway pCO2 systems -Encouraging results, Mar. Chem., 52, 133-145, 1996.
Körtzinger, A., Mintrop, L., Wallace, D. W. R., Johnson, K. M., Neill, C., Tilbrook, B., Towler, P., Inoue, H., Ishii, M., Shaffer, G., Torres, R. F., Ohtaki, E., Yamashita, E., Poisson, A., Brunet, C., Schauer, B., Goyet, C., and Eischeid, G.: The international at-sea intercomparison of fCO2 systems during the R/V Meteor cruise 36/1 in the North Atlantic Ocean, Mar. Chem., 72, 171-192, 2000.
Körtzinger, A., Send, U., Lampitt, R. S., Hartman, S., Wallace, D. W. R., Karstensen, J., Villagarcia, M. G., Linás, O., and DeGrandpré, M. D.: The seasonal pCO2 cycle at 49W 16.5 N in the northeastern Atlantic Ocean and what it tells us about biological productivity. J. Geophys. Res., 113, C04020, doi:10.1029/2007JC004347, 2008.
Lefèvre, N., Ciabrini, J. P., Michard, G., Brient, B., Duchaffaut, M., and Merlivat, L.: A new optical sensor for pCO2 measurements in seawater, Mar. Chem., 42, 189-198, 1993. (Pubitemid 24429262)
Lefèvre, N., Andrié, C., Dandonneau, Y., Reverdin, G., and Rodier, M.: pCO2, chemical properties, and estimated new production in the equatorial Pacific in January-March 1991, J. Geophys. Res., 99, 12639-12654, 1994.
Lefèvre, N., Watson, A. J., and Watson, A. R.: A comparison of multiple regression and neural network techniques for mapping in situ pCO2 data, Tellus B, 57, 375-384, 2005. (Pubitemid 41711622)
Lefèvre, N., Guillot, A., Beaumont, L., and Danguy, T.: Variability of fCO2 in the Eastern Tropical Atlantic from a moored buoy, J. Geophys. Res., 113, C01015, doi:10.1029/2007JC004146, 2008.
Leinweber, A., Gruber, N., Frenzel, H., Friederich, G. E., and Chavez, F. P.: Diurnal carbon cycling in the surface ocean and lower atmosphere of Santa Monica Bay, California, Geophys. Res. Lett., 36, L08601, doi:10.1029/ 2008GL037018, 2009.
Lenton, A., Bopp, L., and Matear, R. J.: Strategies for high-latitude northern hemisphere CO2 sampling now and in the future, Deep-Sea Res. Pt. II, 56, 523-532, 2009.
Merlivat, L. and Brault, P.: CARIOCA buoy -carbon dioxide monitor, Sea Technol., 36, 23-30, 1995.
Merlivat, L., González Dávila, M., Caniaux, G., Boutin, J., and Reverdin, G.: Mesoscale and diel to monthly variability of CO2 and carbon fluxes at the ocean surface in the northeastern Atlantic, J. Geophys. Res. Oceans, 114, C03010, doi:10.1029/2007JC004657, 2009.
Olsen, A. and Metzl, N.: SOCAT QC cookbook for SOCAT participants; available at: www.socat.info/publications.html (last access: 11 March 2012), 2009.
Olsen, A. and Pierrot, D.: Matlab routines to aid QC of SOCAT data; available at: www.socat.info/publications.html (last access: 2 March 2012), 2010.
Olsen, A., Brown, K. R., Chierici, M., Johannessen, T., and Neill, C.: Sea-surface CO2 fugacity in the subpolar North Atlantic, Biogeosciences, 5, 535-547, doi:10.5194/bg-5-535-2008, 2008. (Pubitemid 351533728)
Parard, G., Lefèvre, N., and Boutin, J.: Sea water fugacity of CO2 at the PIRATA mooring at 6 S, 10W, Tellus B, 62, 636-648, 2010.
Pfeil, B. and Olsen, A.: Uniform format surface fCO2 database; available at: www.socat.info/publications.html (last access: 11 March 2012), 2009.
Pierrot, D., Neill, C., Sullivan, K., Castle, R., Wanninkhof, R., Lüger, H., Johannessen, T., Olsen, A., Feely, R. A., and Cosca, C. E.: Recommendations for autonomous underway pCO2 measuring systems and data reduction routines, Deep-Sea Res. Pt. II, 56, 512-522, doi:10.1016/j.dsr2.2008. 12.005, 2009.
Riebesell, U., Körtzinger, A., and Oschlies, A.: Sensitivities of marine carbon fluxes to ocean change, P. Natl. Acad. Sci. USA, 106, 20602-20609, 2009.
Sabine, C. L., Feely, R. A., Gruber, N., Key, R. M., Lee, K., Bullister, J. L., Wanninkhof, R., Wong, C. S., Wallace, D. W. R., Tilbrook, B., Millero, F. J., Peng, T. H., Kozyr, A., Ono T., and Rios A. F.: The oceanic sink for anthropogenic CO2, Science, 305, 367-371, 2004.
Sabine, C. L., Ducklow, H., and Hood, M.: International carbon coordination. Roger Revelle's legacy in the Intergovernmental Oceanographic Commission, Oceanography, 23, 48-61, 2010.
Sabine, C. L., Hankin, S., Koyuk, H., Bakker, D. C. E., Pfeil, B., Olsen, A., Metzl, N., Kozyr, A., Fassbender, A., Manke, A., Malczyk, J., Akl, J., Alin, S. R., Bellerby, R. G. J., Borges, A., Boutin, J., Brown, P. J., Cai, W.-J., Chavez, F. P., Chen, A., Cosca, C., Feely, R. A., González- Dávila, M., Goyet, C., Hardman-Mountford, N., Heinze, C., Hoppema, M., Hunt, C. W., Hydes, D., Ishii, M., Johannessen, T., Key, R. M., Körtzinger, A., Landschützer, P., Lauvset, S. K., Lefèvre, N., Lenton, A., Lourantou, A., Merlivat, L., Midorikawa, T., Mintrop, L., Miyazaki, C., Murata, A., Nakadate, A., Nakano, Y., Nakaoka, S., Nojiri, Y., Omar, A. M., Padin, X. A., Park, G.-H., Paterson, K., Perez, F. F., Pierrot, D., Poisson, A., Ríos, A. F., Salisbury, J., Santana-Casiano, J. M., Sarma, V. V. S. S., Schlitzer, R., Schneider, B., Schuster, U., Sieger, R., Skjelvan, I., Steinhoff, T., Suzuki, T., Takahashi, T., Tedesco, K., Telszewski, M., Thomas, H., Tilbrook, B., Vandemark, D., Veness, T., Watson, A. J., Weiss, R., Wong, C. S., and Yoshikawa-Inoue, H.: Surface Ocean CO2 Atlas (SOCAT) gridded data products, Earth Syst. Sci. Data, 1, 145-153, doi:10.5194/essd-1-145-2013, 2013.
Skjelvan, I., Johannessen, T., and Miller, L. A.: Interannual variability of fCO2 in the Greenland and Norwegian Seas, Tellus, 51B, 477-489, 1999. (Pubitemid 29453874)
Swift, J.: A guide to submitting CTD/hydrographic/tracer data and associated documentation to the CLIVAR and Carbon Hydrographic Data Office, version of 22 April 2008, UCSD Scripps Institution of Oceanography, 37 pp., 2008.
Takahashi, T.: Carbon dioxide in the atmosphere and in Atlantic Ocean water, J. Geophys. Res., 66, 477-494, 1961.
Takahashi, T., Olafsson, J., Goddard, J. G., Chipman, D. W., and Sutherland, S. C.: Seasonal variation of CO2 and nutrients in the high-latitude surface oceans: a comparative study, Global Biogeochem. Cy., 7, 843-878, 1993. (Pubitemid 24430526)
Takahashi, T., Feely, R. A.,Weiss, R.,Wanninkhof, R., Chipman, D. W., Sutherland, S. C., and Takahashi, T. T.: Global air-sea flux of CO2: An estimate based on measurements of sea-air pCO2 difference, P. Natl. Acad. Sci. USA, 94, 8292-8299, 1997.
Takahashi, T., Sutherland, S. G., Sweeney, C., Poisson, A. P., Metzl, N., Tilbrook, B., Bates, N. R., Wanninkhof, R., Feely, R. A., Sabine, C. L., Olafsson, J., and Nojiri, Y.: Global sea-air CO2 flux based on climatological surface ocean pCO2, and seasonal biological and temperature effects, Deep-Sea Res. Pt. II, 49, 1601-1622, 2002. (Pubitemid 34565015)
Takahashi, T., Sutherland, S. C., and Kozyr, A.: Global Ocean SurfaceWater Partial Pressure of CO2 Database: Measurements Performed During 1968-2008 (Version 2008), ORNL/CDIAC-152, NDP-088r, Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, US Dept. of Energy, Oak Ridge, Tenn., doi:10.3334/CDIAC/otg.ndp088r, 2009a.
Takahashi, T., Sutherland, S. C., Wanninkhof, R., Sweeney, C., Feely, R. A., Chipman, D. W., Hales, B., Friederich, G., Chavez, F., Sabine, C. L., Watson, A. J., Bakker, D. C. E., Schuster, U., Metzl, N., Inoue, H. Y., Ishii, M., Midorikawa, T., Nojiri, Y., Körtzinger, A., Steinhoff, T., Hoppema, J. M. J., Olafsson, J., Arnarson, T. S., Tilbrook, B., Johannessen T., Olsen, A., Bellerby, R. G. J., Wong, C. S., Delille, B., Bates, N. R., and De Baar, H. J. W.: Climatological mean and decadal change in surface ocean pCO2, and net sea-air CO2 flux over the global oceans, Deep-Sea Res. Pt. II, 56, 544-577, doi:10.1016/j.dsr2.2008.12.009, 2009b.
Takahashi, T., Sutherland, S. C., and Kozyr, A.: Global Ocean SurfaceWater Partial Pressure of CO2 Database: Measurements Performed During 1957-2010 (Version 2010), ORNL/CDIAC-159, NDP-088(V2010), Carbon Dioxide Information Analysis Center, Oak Ridge Nat. Lab., US Dept. of Energy, Oak Ridge, Tenn., doi:10.3334/CDIAC/otg.ndp088(V2010), 2011.
Tanhua, T., van Heuven, S., Key, R. M., Velo, A., Olsen, A., and Schirnick, C.: Quality control procedures and methods of the CARINA database, Earth Syst. Sci. Data, 2, 35-49, doi:10.5194/essd-2-35-2010, 2010.
Telszewski, M., Chazottes, A., Schuster, U., Watson, A. J., Moulin, C., Bakker, D. C. E., González-Dávila, M., Johannessen, T., Körtzinger, A., Lüger, H., Olsen, A., Omar, A., Padin, X. A., Ríos, A. F., Steinhoff, T., Santana-Casiano, M., Wallace, D. W. R., and Wanninkhof, R.: Estimating the monthly pCO2 distribution in the North Atlantic using a self-organizing neural network, Biogeosciences, 6, 1405-1421, doi:10.5194/bg-6-1405-2009, 2009.
Wada, A., Midorikawa, T., Ishii, M., and Motoi, T.: Carbon system changes in the East China Sea induced by typhoons Tina and Winnie in 1997, J. Geophys. Res., 116, C07014, doi:10.1029/2010JC006701, 2011.
Wanninkhof, R. and Thoning, K.: Measurement of fugacity of CO2 in surface water using continuous and discrete sampling methods, Mar. Chem., 44, 189-204, 1993. (Pubitemid 24430327)
Watson, A. J., Schuster, U., Bakker, D. C. E., Bates, N. R., Corbiere, A., González-Dávila, M., Friedrich, T., Heinze, C., Johannessen, T., Körtzinger, A., Metzl, N., Olafsson, J., Olsen, A., Oschlies, A., Padin, X. A., Pfeil, B., Santana-Casiano, J. M., Steinhoff, T., Telszewski, M., Rios, A. F., Wallace, D. W. R., and Wanninkhof, R.: A network to accurately estimate the North Atlantic sink for CO2, Science, 326, 1391-1393, 2009.
Weiss, R. F.: Determinations of carbon dioxide and methane by dual catalyst flame ionization chromatography and nitrous oxide by electron capture chromatography, J. Chromatogr. Sci., 19611-19616, 1981.
Weiss, R. F., Jahnke, R. A., and Keeling, C. D.: Seasonal effects of temperature and salinity on the partial pressure of CO2 in seawater, Nature, 300, 511-513, 1982.
