TABLE 3.
Cross consistency among the retrieved gross primary production (GPP) and ecosystem respiration (RECO) by NNC‐part, daytime method (DT), and nighttime method (NT) methods at half hourly time step, also after removing the mean daily value of the fluxes. Statistics reported in the table are the median of the study sites values, in brackets the 25th and 75th percentile
| Gross CO2 flux | Variability | Comparison | Statistics | ||
|---|---|---|---|---|---|
| R 2 | RMSE (µmol CO2 m−2 s−1) | Bias (µmol CO2 m−2 s−1) | |||
| GPP | Overall | NNC‐part versus DT | .96 (.93/.97) | 1.22 (0.76/1.52) | −0.042 (−0.17/0.039) |
| NNC‐part versus NT | .94 (.89/.95) | 1.53 (0.89/2.02) | −0.068 (−0.18/0.025) | ||
| DT versus NT | .90 (.84/.93) | 1.84 (1.20/2.43) | 0.020 (−0.16/0.14) | ||
| Removing mean daily value | NNC‐part versus DT | .95 (.93/.97) | 0.93 (0.59/1.11) | ||
| NNC‐part versus NT | .90 (.86/.92) | 1.34 (0.82/1.86) | |||
| DT versus NT | .86 (.81/.89) | 1.55 (1.02/2.13) | |||
| RECO | Overall | NNC‐part versus DT | .73 (.54/.83) | 0.98 (0.70/1.29) | −0.023 (−0.19/0.12) |
| NNC‐part versus NT | .87 (.72/.92) | 0.68 (0.47/0.83) | −0.072 (−0.16/0.022) | ||
| DT versus NT | .78 (.65/.86) | 0.95 (0.64/1.21) | −0.0045 (−0.21/0.16) | ||
| Removing mean daily value | NNC‐part versus DT | .21 (.09/.32) | 0.39 (0.28/0.51) | ||
| NNC‐part versus NT | .24 (.11/.38) | 0.35 (0.26/0.47) | |||
| DT versus NT | .68 (.62/.76) | 0.20 (0.14/0.26) | |||