Fig. 5 ∣. Relative biases in estimates of photosynthesis (F_p) and respiration (F_r).

Biases are calculated on both an annual and growing season (GS) basis, and for the growing season during the day for the night-time method (GS, DT), and during the night for the day-time method (GS, NT). Biases (positive, left; negative, right) are defined for each method as the difference between the version of the method that does not allow for an inhibition of ecosystem respiration during the day and the version that does. Positive biases (left) indicate that the method version that does not allow for inhibition overestimates net flux components compared to the version that does allow for inhibition. Values are calculated using all data from the FLUXNET Tier 1 dataset. Error bars represent the standard error of the mean bias across all sites.