Table 2.
Mapping covariates used in the modelling [17]
| Short name | Description | Original data source | Temporal | Date |
|---|---|---|---|---|
| Population | ||||
| Access | Travel time to cities with greater than 50,000 population via all transport methods | http://forobs.jrc.ec.europa.eu | Static | 2000 |
| NTL | VIIRS nighttime lights | http://ngdc.noaa.gov/eog/ | Static | 2012 |
| GPW | Gridded population of the world (GPW) population density | http://sedac.ciesin.columbia.edu/ | Static | 2010 |
| Physical earth | ||||
| Elevation | Shuttle radar topography mission (SRTM) near—global digital elevation models (DEMs) | http://webmap.ornl.gov/ | Static | 2000 |
| Environment | ||||
| Aridity | Mean annual aridity | http://csi.cgiar.org/Aridity/ | Synoptic | 1950–2000 |
| PRECIP | Average monthly rainfall | http://www.worldclim.org/ | Synoptic | 1950–2000 |
| EVI | Enhanced vegetation index | http://modis.gsfc.nasa.gov/ | Multitemporal | 2001–2014 |
| LST.day | Land surface temperature in the daytime | http://modis.gsfc.nasa.gov/ | Multitemporal | 2001–2014 |
| LST.delta | Land surface temperature daily fluctuation range | http://modis.gsfc.nasa.gov/ | Multitemporal | 2001–2014 |
| LST.night | Land surface temperature in the nighttime | http://modis.gsfc.nasa.gov/ | Multitemporal | 2001–2014 |
| PET | Mean annual potential evapotranspiration | http://csi.cgiar.org/Aridity/ | Synoptic | 1950–2000 |
| TCB | Tasseled—cap brightness | http://modis.gsfc.nasa.gov/ | Multitemporal | 2001–2014 |
| TCW | Tasseled—cap wetness | http://modis.gsfc.nasa.gov/ | Multitemporal | 2001–2014 |