Table 3.
Satellite Validation Statistics of DOC Algorithms Within the MABa
| Algorithm | MAPD (%) | ±sd (%) | RMSE (μmol L−1) | Median Ratio | SIQR | Bias (%) | Slope | R2 | n |
|---|---|---|---|---|---|---|---|---|---|
| SeaWiFS | |||||||||
| Power aCDOM*(380) | 18.1 | 10.9 | 25.1 | 0.99 | 0.180 | −6.2 | 0.20 | 0.39 | 36 |
| Exponential aCDOM*(355) | 18.7 | 11.3 | 24.7 | 1.04 | 0.185 | −3.0 | 0.18 | 0.42 | 36 |
| Exponential aCDOM*(380) | 18.0 | 11.1 | 25.0 | 1.02 | 0.181 | −4.8 | 0.18 | 0.44 | 36 |
| Linear aCDOM(412) | 11.1 | 7.5 | 15.2 | 1.05 | 0.091 | 9.0 | 1.09 | 0.90 | 28 |
| MODIS | |||||||||
| Power aCDOM(380) | 17.2 | 10.9 | 22.3 | 1.08 | 0.138 | 0.60 | 0.27 | 0.46 | 50 |
| Exponential aCDOM*(355) | 18.8 | 11.4 | 23.0 | 1.11 | 0.130 | 3.7 | 0.24 | 0.48 | 50 |
| Exponential aCDOM*(380) | 17.4 | 10.9 | 22.3 | 1.08 | 0.127 | 1.7 | 0.25 | 0.52 | 50 |
| Linear aCDOM(412) | 13.9 | 9.2 | 18.0 | 1.04 | 0.100 | −0.9 | 0.57 | 0.76 | 35 |
a
sd is the standard deviation of the MAPD. SIQR is the semi-interquartile range. The slope and R2 values are from Type II (Deming) linear regression analysis of 1-to-1 matchups between satellite DOC versus in situ DOC values. Linear CDOM algorithms were seasonally weighted via linear interpolation for transition periods.