SINKS FOR ANTHROPOGENIC CARBON.

tion and hence appears to be as large a carbon sink as the oceans, as shown in figure 1. Note, however, that the uncertainty in the estimated terrestrial source is very large, with a reported range of 0.6—2.5 Pg C/yr. The uncer- tainty in the land sink, which is estimated by differencing all the other components of the carbon budget, is corre- ................
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