Table 2.
Summary of the input datasets and metadata used for TRAX GPP generation.
| Category | Dataset | Spatial resolution | Temporal resolution | Temporal coverage |
|---|---|---|---|---|
| Vegetation drivers | MODIS Nadir BRDF-adjusted reflectance (MCD43C4 v006)35 | 0.05° × 0.05° | Daily | 2000-present |
| MODIS Terra and Aqua LAI/fPAR (MCD15A3H, v006)40 | 500 m | 4-days | 2000-present | |
| Meteorological drivers | ERA5-Land monthly averaged data from 1950 to present41 | 0.1° × 0.1° | Monthly | 1950-present |
| CO2 constraints | NOAA’s CarbonTracker version CT202244 | 3° × 2° | Monthly | 2000–2020 |
| CAMS global inversion-optimised greenhouse gas fluxes and concentrations45 | 1.4° × 0.7° | Monthly | 2015–2024 | |
| Other supporting data | MODIS Land Cover (MCD12C1 v006)34 | 0.05° × 0.05° | Yearly | 2001-present |
| FLUXCOM GPP (RS + METEO)161 | 0.5° × 0.5° | Monthly | 2001–2018 | |
| MODIS GPP (MOD17A2H v061)162 | 500 m | 8-days | 2000-present | |
| FLUXCOM-X GPP (X-BASE)49 | 0.05° × 0.05° | Monthly | 2001–2021 | |
| CEDAR-GPP (ST_Baseline_DT / ST_CFE-Hybrid_DT)50 | 0.05° × 0.05° | Monthly | 1982–2020 | |
| Revised_EC_LUE GPP51 | 0.05° × 0.05° | 8-days | 1982–2018 |