Observations and synthesis to establish variability and trends of oceanic pH.

  • Watson, Andrew (Principal Investigator)
  • Bakker, Dorothee (Co-Investigator)
  • Hardman-Mountford, Nicholas (Co-Investigator)
  • Hydes (NOCS), David (Co-Investigator)
  • Pearce, David (Co-Investigator)
  • Schuster, Ute (Co-Investigator)

Project Details


We propose a programme of observations, combined with analysis of past and ongoing time series, to discover the magnitude of surface pH variations at seasonal-up-to-decadal time scales. We will address the Atlantic, UK shelf and slope waters, and selected locations in the Southern Ocean, using data from time series stations and volunteer observing ships (VOS), measuring three parameters of the marine carbonate system. The programme will be integrated with the efforts of colleagues in other European countries, (enablng better and longer-term coverage, and of of a wider area). It will be co-ordinated with the Surface ocean carbon atlas project (SOCAT) which aims to produce the most comprehensive and up to date data base to access all the quality data relevant to ocean carbon uptake, and from which pH trends can be derived. Estimation of decadal trends change will be set against the background of intra- and inter-annual variation.
Effective start/end date1/10/1015/07/13


  • Natural Environment Research Council: £112,239.00
  • Multidecadal changes in biology influence the variability of the North Atlantic carbon sink

    Ostle, C., Landschützer, P., Edwards, M., Johnson, M., Schmidtko, S., Schuster, U., Watson, A. J. & Robinson, C., 16 Nov 2022, In: Environmental Research Letters. 17, 11, 114056.

    Research output: Contribution to journalArticlepeer-review

    Open Access
    5 Downloads (Pure)
  • The seasonal cycle of carbonate system processes in Ryder Bay, West Antarctic Peninsula

    Legge, O. J., Bakker, D. C. E., Meredith, M. P., Venables, H. J., Brown, P. J., Jones, E. M. & Johnson, M. T., May 2017, In: Deep-Sea Research Part II: Topical Studies in Oceanography. 139, p. 167–180 14 p.

    Research output: Contribution to journalArticlepeer-review

    Open Access
    36 Citations (Scopus)
    7 Downloads (Pure)
  • Global Carbon Budget 2015

    Le Quere, C., Moriarty, R., Andrew, R. M., Canadell, J. G., Sitch, S., Korsbakken, J. I., Friedlingstein, P., Peters, G. P., Andres, R. J., Boden, T. A., Houghton, R. A., House, J. I., Keeling, R. F., Tans, P., Arneth, A., Bakker, D. C. E., Barbero, L., Bopp, L., Chang, J., Chevallier, F. & 51 others, Chini, L. P., Ciais, P., Fader, M., Feely, R. A., Gkritzalis, T., Harris, I., Hauck, J., Ilyina, T., Jain, A. K., Kato, E., Kitidis, V., Klein Goldewijk, K., Koven, C., Landschutzer, P., Lauvset, S. K., Lefevre, N., Lenton, A., Lima, I. D., Metzl, N., Millero, F., Munro, D. R., Murata, A., Nabel, J. E. M. S., Nakaoka, S., Nojiri, Y., O'Brien, K., Olsen, A., Ono, T., Perez, F. F., Pfeil, B., Pierrot, D., Poulter, B., Rehder, G., Rodenbeck, C., Saito, S., Schuster, U., Schwinger, J., Seferian, R., Steinhoff, T., Stocker, B. D., Sutton, A. J., Takahashi, T., Tilbrook, B., van der Laan-Luijkx, I. T., van der Werf, G. R., van Heuven, S., Vandemark, D., Viovy, N., Wiltshire, A., Zaehle, S. & Zeng, N., 7 Dec 2015, In: Earth System Science Data. 7, 2, p. 349-396 48 p.

    Research output: Contribution to journalArticlepeer-review

    Open Access
    544 Citations (Scopus)
    6 Downloads (Pure)