Missing sink

Nadelhoffer et al. (1999) showed that the missing sink can be explained neither by the contribution of the ocean nor carbon assimilation by boreal forests of the Northern Hemisphere. It was shown that the existing uncertainty about the volume of carbon sink in forests cannot be reduced by more than 0.25 1015 gCyr-1. In... 

Houghton, R. A., E. A. Davidson, and G. M. Woodwell. 1998. Missing sinks, feedbacks, and understanding the role of terrestrial ecosystems in the global carbon balance. Global Biogeochemical Cycles 12 25-34. 

Pg C/year, similar to the minimum values of Woodwell et al. (1983), but the trends during the past century differ significantly (Fig. 11-23). Rather than finding a sink for the fossil fuel CO2 that the oceans could not accommodate, in the terrestrial biosphere we find a source The "missing sink" problem is yet more severe. Obviously our knowledge of the global cycle of carbon is inadequate to get ends to meet. 

On the one hand, human activities that increase the availability of N in N-limited systems can cause net storage of C this may be an important component of the missing sink for anthropogenic CO2 (Schimel et al., 1995 Townsend et al., 1996). On the other hand, N limitation may be an important constraint on the ability of terrestrial ecosystems to store C in response to anthropogenic CO2 enrichment (Melillo ef fl/., 1996). 

The problem of the terrestrial missing sink remains. Where and why is there net uptake in terrestrial systems The two questions. 

One of the problems with understanding changes in the global cartxrn cycle has been the problem of missing sinks The well-qnantified anthropogenic sources of CO2 are larger then the amount that can be acconnted for in the... 

Volkamer, R., F. San Martini, L.T. Molina, D. Salcedo, J.L. Jimenez, and M.J. Molina (2007), A missing sink for gas-phase glyoxal in Mexico City Formation of secondary organic aerosol, Geophys. Res. Lett., 34, L19807/1-L19807/5. 

Missing sink (possibly terrestrial vegetation) 1.9 (0.3 to 3.8) Not available... 

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