Table 2 Details of environmental variables used as predictors in the analysis of first-passage time (FPT) of two waterfowl species in southern Africa
| Â | Source | Units | Spatial resolution | Temporal resolution | Earth Engine Layer | |
|---|---|---|---|---|---|---|
NDVI | Normalised difference vegetation index NDVI = (NIR – R)/(NIR + R) | MODIS terra |  | 250 m | 16-day composite | MODIS/MCD43A4_NDVI |
mNDWI | Modified normalised difference water index mNDWI = (G-MIR)/(G + MIR) | MODIS terra |  | 250 m | 16-day composite | MODIS/MCD43A4 |
Precip | Rainfall | TRMM | mm/h | 0.25° | 3 hourly | TRMM/3B42 |
Temp | Land surface temperature | MODIS | Kelvin (Convert to °C) | 1 km | Daily | MODIS/MYD11A1 |
Elev | Elevation | NASA | Meters above sea level | 0.9Â km | N/A | CGIAR/SRTM90_V4 |