File : D5.12
Author : Philippe Ciais (CEA/LSCE)
Relationships between growing season temperature anomalies and observed / simulated terrestrial CO2 fluxes across the European continent have been analyzed for gross and net terrestrial CO2 fluxes using eddy covariance data from the ICOS network, atmospheric inversion estimates of net ecosystem exchange and the FLUXCOM data driven models of gross primary productivity, the latter of which are trained with eddy covariance data and remote sensing of surface properties. We show a decreasing interannual sensitivity of GPP to temperature anomalies, with a sign-change threshold of 7°C in the site data analysis and 23°C in the model-based analysis.
Figure 1 : The temporal sensitivities to the mean growing season surface temperature of MLINEAR detrended Fluxcom GPP (blue) and CSR TER (red), plotted as a function of the mean growing season surface temperature
