CO2 sources from a mass-balance inversion: sensitivity to the surface constraint

Article English OPEN
Law, Rachel M. (2011)

Carbon dioxide sources for 1981–1995 are calculated using a mass-balance inversion method. Options for deriving a suitable surface constraint for the model from the available observed data are assessed. A new method, in which the longitudinal variation in the observations is accounted for, is compared to a more conventional spline fit to the data. This new constraint is applied either to the zonal mean concentration or to the concentration at all grid points. The results indicate relatively large differences between long-term mean regional sources but relatively good agreement of the interannual variations. The global and tropical sources estimated show a surprising relationship to the southern oscillation index; maximum correlation occurs for CO2 sources leading the SOI by around 9 months.DOI: 10.1034/j.1600-0889.1999.00011.x
  • References (23)
    23 references, page 1 of 3

    Bacastow, R. B. 1976. Modulation of atmospheric carbon dioxide by the southern oscillation. Nature 261, 116-118.

    Bousquet, P., Ciais, P., Monfray, P., Balkanski, Y., Ramonet, M. and Tans, P. 1996. Influence of two atmospheric transport models on inferring sources and sinks of atmospheric CO2. T ellus 48B, 568-582.

    Ciais, P., Tans, P. P., White, J. W. C., Trolier, M., Francey, R. J., Berry, J. A., Randall, D. R., Sellers, P. J., Collatz, J. G. and Schimel, D. S. 1995. Partitioning of ocean and land uptake of CO2 as inferred by d13C measurements from the NOAA Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network. J. Geophys. Res. 100, 5051-5070.

    Conway, T. J., Tans, P. P., Waterman, L. S., Thoning, K. W., Kitzis, D. R., Masarie, K. A. and Zhang, N. 1994a. Evidence for interannual variability of the carbon cycle from the National Oceanic and Atmospheric Administration/Climate Monitoring and Diagnostics Laboratory Global Air Sampling Network. J. Geophys. Res. 99, 22831-22855.

    Conway, T. J., Tans, P. P. and Waterman, L. S. 1994b. Atmospheric CO2 records from sites in the NOAA/ CMDL air sampling network. T rends '93: A compendium of data on global change, T. Boden, D. Kaiser, R. Sepanski and F. Stoss (eds.). Carbon Dioxide Information Analysis Center, Oak Ridge, USA, 41-119.

    Ebisuzaki, W. 1997. A method to estimate the statistical significance of a correlation when the data are serially correlated. J. Climate 10, 2147-2153.

    Enting, I. G. 1987. On the use of smoothing splines to filter CO2 data. J. Geophys. Res. 92D, 10977-10984.

    Enting, I. G. and Mansbridge, J. V. 1989. Seasonal sources and sinks of atmospheric CO2: direct inversion of filtered data. Tellus 41B, 111-126.

    Enting, I. G. and Mansbridge, J.V. 1991. Latitudinal distribution of sources and sinks of CO2: results of an inversion study. T ellus 43B, 156-170.

    Enting, I. G., Trudinger, C. M. and Francey, R. J. 1995. A synthesis inversion of the concentration and d13C of atmospheric CO2. T ellus 47B, 35-52.

  • Related Research Results (1)
  • Metrics
    No metrics available
Share - Bookmark