Optimal determination of the parameters controlling biospheric CO2 fluxes over Europe using eddy covariance fluxes and satellite NDVI measurements

Tuula Aalto; Philippe Ciais; Anne Chevillard; Cyril Moulin

doi:10.3402/tellusb.v56i2.16413

Optimal determination of the parameters controlling biospheric CO2 fluxes over Europe using eddy covariance fluxes and satellite NDVI measurements

Tellus B: Chemical and Physical Meteorology

Volume 56 (2004): Issue 2

By: Tuula Aalto, Philippe Ciais, Anne Chevillard and Cyril Moulin

Open Access

|Jan 2004

Abstract

Ecosystem CO₂ flux measurements using the eddy covariance method were compared with the biospheric CO₂ exchange estimates of a regional scale atmospheric model. The model described the seasonal patterns quite well, but underestimated the amplitude of the fluxes, especially at the northern sites. Two model parameters, photosynthetic efficiency for light use and Q₁₀ for soil respiration, were re-evaluated on a diurnal and seasonal basis using the results from flux measurements. In most cases the photosynthetic efficiency was higher than the earlier estimate. The resulting flux was very sensitive to the value of photosynthetic efficiency, while changes in Q₁₀ did not have a significant effect.

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DOI: https://doi.org/10.3402/tellusb.v56i2.16413 | Journal eISSN: 1600-0889

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Language: English

Page range: 93 - 104

Submitted on: Jul 17, 2002

Accepted on: Oct 20, 2003

Published on: Jan 1, 2004

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

© 2004 Tuula Aalto, Philippe Ciais, Anne Chevillard, Cyril Moulin, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 56 (2004): Issue 2