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An airborne regional carbon balance for Central Amazonia

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons62444

Kolle,  O.
Service Facility Field Measurements & Instrumentation, O. Kolle, Max Planck Institute for Biogeochemistry, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons62376

Fritsch,  H.
Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society;

Externe Ressourcen
Volltexte (frei zugänglich)

BGC1037.pdf
(Verlagsversion), 716KB

BGC1037D.pdf
(Preprint), 868KB

Ergänzendes Material (frei zugänglich)

BGC1037S.pdf
(Ergänzendes Material), 4MB

Zitation

Lloyd, J., Kolle, O., Fritsch, H., De Freitas, S. R., Dias, M., Artaxo, P., et al. (2007). An airborne regional carbon balance for Central Amazonia. Biogeosciences, 4(5), 759-768. doi:10.5194/bg-4-759-2007.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000E-D55D-4
Zusammenfassung
We obtained regional estimates of surface CO < sub > 2 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. [References: 40]