IPCC Fourth Assessment Report: Climate Change 2007
Climate Change 2007: Working Group I: The Physical Science Basis
Figure 7.6

Figure 7.6. Individual estimates of the ocean-atmosphere flux reported in Chapter 5 and of the related land-atmosphere flux required to close the global carbon budget. The dark thick lines are the revised budget estimates in the AR4 for the 1980s, the 1990s and the early 2000s, respectively.