Table 2.
Comparison of Methodologies by Previous and Present Efforts to Produce Trend Maps From Different Sensors and Time Records
| Authors | Years | Sensor/Processing Version (PV) | Initial Data | Analysis Resolution | Special Treatment | Trend Analysis |
|---|---|---|---|---|---|---|
| Gregg et al. [2005] | 1998–2003 | SeaWiFS | 9 km monthly means | 25 km | Linear regression | |
| PV: 2003 | Annual mean anomalies (n = 6) | |||||
| Henson et al. [2010] | 1997–2007 | SeaWiFS | 9 km monthly means | Spatial resolution unknown | Linear regression | |
| PV: V5.2 | Monthly mean anomalies | |||||
| (n = 124) | ||||||
| Vantrepotte and Melin [2011] | 1997–2007 | SeaWiFS | 9 km monthly means | 27 km at equator | Selective data removal, gap filling (PCA) | Census X-11 |
| PV: R2009 | Monthly means | |||||
| (n=120) | ||||||
| Siegel et al. [2013] | 1997–2010 | SeaWiFS | 9 km monthly means | 1° × 1° | Logarithmic transformation, treatment of detrital material | Linear regression |
| PV: 2010 | Monthly mean anomalies (n = 154) | |||||
| This effort | 1998–2012 | SeaWiFS 1998–2002 | 1.25° × 0.67° monthly means (after bias correction and data assimilation) | 1.25° × 0.67° annual medians (n = 15) | Bias correction, data assimilation, end point bias removal, medians, treatment of aerosols | Linear regression |
| PV: 2010 | ||||||
| MODIS | ||||||
| 2003–2012 | ||||||
| PV: 2013 |