Title
Terrestrial gross carbon dioxide uptake : global distribution and covariation with climate
Author
Faculty/Department
Faculty of Sciences. Biology
Publication type
article
Publication
Washington, D.C. ,
Subject
Engineering sciences. Technology
Source (journal)
Science / American Association for the Advancement of Science [Washington, D.C.] - Washington, D.C.
Volume/pages
329(2010) :5993 , p. 834-838
ISSN
0036-8075
1095-9203
ISI
000280809900049
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
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.
E-info
https://repository.uantwerpen.be/docman/iruaauth/e99d59/53f2200.pdf
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