An airborne regional carbon balance for Central Amazonia

Lloyd, J., Kolle, O., Fritsch, H., de Freitas, S.R., Silva Dias, M.A.F., Artaxo, P., Nobre, A.D., de Araújo, A.C., Kruijt, B., Sogacheva, L., Fisch, G., Thielmann, A., Kuhn, U., and Andreae, M.O. (2007) An airborne regional carbon balance for Central Amazonia. Biogeosciences, 4 (5). pp. 759-768.

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We obtained regional estimates of surface CO2 exchange rates using atmospheric boundary layer budgeting techniques above tropical forest near Manaus, Brazil. Comparisons were made with simultaneous measurements from two eddy covariance towers below. Although there was good agreement for daytime measurements, large differences emerged for integrating periods dominated by the night-time fluxes. These results suggest that a systematic underestimation of night time respiratory effluxes may be responsible for the high Amazonian carbon sink suggested by several previous eddy covariance studies. Large CO2 fluxes from riverine sources or high respiratory losses from recently disturbed forests do not need to be invoked in order to balance the carbon budget of the Amazon. Our results do not, however, discount some contribution of these processes to the overall Amazon carbon budget.

Item ID: 17984
Item Type: Article (Research - C1)
ISSN: 1726-4189
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© Author(s) 2007. This work is licensed under a Creative Commons License. The article and any associated published material is distributed under the Creative Commons Attribution 3.0 License.

Date Deposited: 26 Sep 2011 23:17
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060208 Terrestrial Ecology @ 100%
SEO Codes: 96 ENVIRONMENT > 9699 Other Environment > 969999 Environment not elsewhere classified @ 100%
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