Journal article
Quantifying the constraint of biospheric process parameters by CO2 concentration and flux measurement networks through a carbon cycle data assimilation system
EN Koffi, PJ Rayner, M Scholze, F Chevallier, T Kaminski
Atmospheric Chemistry and Physics | Published : 2013
Abstract
The sensitivity of the process parameters of the Biosphere Energy Transfer HYdrology (BETHY) model to choices of atmospheric concentration network, high frequency terrestrial fluxes, and the choice of flux measurement network is investigated by using a carbon cycle data assimilation system. We use BETHY-generated fluxes as a proxy of flux measurements. Results show that monthly mean or low-frequency observations of CO2 concentration provide strong constraints on parameters relevant for net flux (NEP) but only weak constraints for parameters controlling gross fluxes. The use of high-frequency CO2 concentration observations, which has led to great refinement of spatial scales in inversions of ..
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Awarded by European Commission through the IMECC Integrated Infrastructure Initiative (I3)
Awarded by ARC Professorial Fellowship
Funding Acknowledgements
We acknowledge the financial support of the European Commission through the IMECC Integrated Infrastructure Initiative (I3) project under the 6th Framework Program (contract number 026188). P. Rayner is in receipt of an ARC Professorial Fellowship (DP1096309). We thank the anonymous reviewers of this manuscript for their constructive comments.