• Bousquet, P., P. Peylin, P. Ciais, C. Le Quéré, P. Friedlingstein, and P. Tans, Regional changes in carbon dioxide fluxes of land and oceans since 1980, Science, 290, 13421346, 2000.
  • Chen, M., P. Xie, J. E. Janowiak, and P. A. Arkin, Global land precipitation: A 50-yr monthly analysis based on gauge observations, J. Hydrometeorol., 3, 249266, 2002.
  • , Cooperative Atmospheric Data Integration Project, GLOBALV1EW-CO2NOAA Clim. Monit. and Diagn. Lab., Boulder, Colo., 2004.
  • Gobron, N., et al., The state of vegetation in Europe following the 2003 drought, Int. J. Remote Sens., 2005.
  • Keeling, C. D., R. B. Bacastow, A. F. Carter, S. C. Piper, T. P. Whorf, M. Heimann, W. G. Mook, and H. Roeloffzen, A three-dimensional model of atmospheric CO2 transport based on observed winds: 1. Analysis of observational data, Aspects of Climate Variability in the Pacific and Western Americas, Geophys. Monogr. Ser., 55Peterson, D. H., 165236, AGU, Washington D.C., 1989.
  • Knorr, W., and M. Heimann, Uncertainties in global terrestrial biosphere modeling: 2: Global constraints for a process-based vegetation model, Global Biogeochem. Cycles, 151, 227246, 2001.
  • Lyon, B., The strength of El Niño and the spatial extent of tropical drought, Geophys. Res. Lett., 31L2120410.1029/2004GL020901, 2004.
  • Page, S. E., F. Siegert, J. O. Rieley, H.-D. V. Boehm, A. Jayak, and S. Limink, The amount of carbon released from peat and forest fires in Indonesia during 1997, Nature, 420, 6165, 2002.
  • Prentice, I. C., et al., The carbon cycle and atmospheric carbon dioxide, Climate Change 2001Houghton, J. T., et al., 185225, Cambridge Univ. Press, New York., 2001.