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Terrestrial gross carbon dioxide uptake: Global distribution and covariation with climate

  • Christian Beer
  • , Markus Reichstein
  • , Enrico Tomelleri
  • , Philippe Ciais
  • , Martin Jung
  • , Nuno Carvalhais
  • , Christian Rödenbeck
  • , M. Altaf Arain
  • , Dennis Baldocchi
  • , Gordon B. Bonan
  • , Alberte Bondeau
  • , Alessandro Cescatti
  • , Gitta Lasslop
  • , Anders Lindroth
  • , Mark Lomas
  • , Sebastiaan Luyssaert
  • , Hank Margolis
  • , Keith W. Oleson
  • , Olivier Roupsard
  • , Elmar Veenendaal
  • Nicolas Viovy, Christopher Williams, F. Ian Woodward, Dario Papale
  • Max Planck Institute for Biogeochemistry
  • Université Versailles St-Quentin
  • NOVA University Lisbon
  • McMaster University
  • University of California at Berkeley
  • National Center for Atmospheric Research
  • Potsdam Institute for Climate Impact Research
  • European Commission Joint Research Centre Institute
  • Lund University
  • University of Sheffield
  • University of Antwerp
  • Université Laval
  • Centre de coopération internationale en recherche agronomique pour le développement
  • Tropical Agricultural Research and Higher Education Center
  • Wageningen University & Research
  • Clark University
  • Tuscia University

Research output: Contribution to journalArticlepeer-review

2375 Scopus citations

Abstract

Terrestrial gross primary production (GPP) is the largest global CO 2 flux driving several ecosystem functions. We provide an observation-based estimate of this flux at 123 ± 8 petagrams of carbon per year (Pg C year-1) using eddy covariance flux data and various diagnostic models. Tropical forests and savannahs account for 60%. GPP over 40% of the vegetated land is associated with precipitation. State-of-the-art process-oriented biosphere models used for climate predictions exhibit a large between-model variation of GPP's latitudinal patterns and show higher spatial correlations between GPP and precipitation, suggesting the existence of missing processes or feedback mechanisms which attenuate the vegetation response to climate. Our estimates of spatially distributed GPP and its covariation with climate can help improve coupled climate-carbon cycle process models.

Original languageEnglish
Pages (from-to)834-838
Number of pages5
JournalScience
Volume329
Issue number5993
DOIs
StatePublished - Aug 13 2010

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