FC (unit: μmol m−2 s−1) | Mean | Std. | 25% | 50% | 75% |
---|---|---|---|---|---|
Default (double rotation & block averaging only) | 8.8 | 7.3 | 2.3 | 7.8 | 14.4 |
Difference with default (EXP-default; unit: μmol m−2 s−1) | |||||
---|---|---|---|---|---|
Coordinate rotation | |||||
 Triple rotation | − 0.1 | 1.5 | 0.0 | 0.0 | 0.1 |
 Planar fit [24] | − 0.8 | 3.8 | − 1.7 | − 0.5 | 0.3 |
 Planar fit [25] | − 1.0 | 3.9 | − 1.9 | − 0.6 | 0.3 |
Detrending | |||||
 Linear detrending | − 0.4 | 3.9 | − 1.3 | − 0.1 | 0.4 |
 Running mean 250 s | − 0.7 | 4.3 | − 2.0 | − 0.5 | 0.8 |
 Exponential running mean 250 s | − 0.9 | 3.8 | − 2.0 | − 0.6 | 0.2 |
Time Lags Compensation | |||||
 Covariance maximization | 0.0 | 0.1 | 0.0 | 0.0 | 0.1 |
 Covariance maximization with default | 0.1 | 0.1 | 0.0 | 0.0 | 0.1 |
 Automatic time lag Optimization | 0.0 | 0.1 | 0.0 | 0.0 | 0.1 |
Spike count/removal | |||||
 Mauder et al. [26], accepted spikes 1–30% | − 0.5 | 1.4 | − 0.3 | 0.0 | 0.0 |
 Vickers and Mahrt [27] (VM97), Max consecutive outliers (MCO) 3 | − 0.1 | 0.2 | − 0.1 | 0.0 | 0.0 |
 VM97, MCO 10 | − 0.2 | 0.4 | − 0.2 | 0.0 | 0.0 |
 VM97, MCO 30 | − 0.3 | 0.7 | − 0.4 | − 0.1 | 0.0 |
 VM97, MCO 50 | − 0.4 | 0.8 | − 0.4 | − 0.1 | 0.0 |
 VM97, MCO 70 | − 0.4 | 0.8 | − 0.5 | − 0.1 | 0.0 |
Amplitude resolution | |||||
 4–7 sigma, number of bins 50–150 | 0.0 | 0.1 | 0.0 | 0.0 | 0.1 |
Dropouts | |||||
 Accepted central dropouts 5–20% | 0.0 | 0.1 | 0.0 | 0.0 | 0.1 |
Absolute limits | 0.0 | 0.1 | 0.0 | 0.0 | 0.1 |
Skewness & Kurtosis | 0.0 | 0.1 | 0.0 | 0.0 | 0.1 |
Discontinuities | 0.0 | 0.1 | 0.0 | 0.0 | 0.1 |
Spectral correction | |||||
 Low-frequency range [28] | 0.3 | 0.4 | 0.1 | 0.2 | 0.4 |
 High-frequency range (HFR) [29] | 0.1 | 0.2 | 0.0 | 0.1 | 0.2 |
0.7 | 1.0 | 0.2 | 0.4 | 0.8 | |
 HFR [32] | 0.2 | 0.3 | 0.0 | 0.1 | 0.4 |
 HFR [33] with Horst and Lenschow [34] (HL09): along-wind, cross, and vertical winds | 0.1 | 0.2 | 0.0 | 0.1 | 0.2 |
 HFR [33] with HL09: only cross and vertical winds | 0.1 | 0.1 | 0.0 | 0.1 | 0.2 |
 HFR [35] with HL09: along-wind, cross, and vertical winds | 0.2 | 0.2 | 0.0 | 0.1 | 0.3 |
 HFR [35] with HL09: only cross and vertical winds | 0.2 | 0.2 | 0.0 | 0.1 | 0.3 |