Skip to main content

Table 1 Environmental variables used in the SDMs for mf occurrence and their sources

From: Spatial variation in lymphatic filariasis risk factors of hotspot zones in Ghana

Variable

Variable Description

Source

Population

Population Density

WorldPop [26]

Housing

Improved Housing

The malaria atlas project [38]

DEM

Digital elevation model

STRM (US [39])

Waterbodies

Proximity to all water bodies and wetlands; swamps and marshes

 

Slope

Derived from elevation

 

LULC

Land use and land cover classes

Landsat 7 (US [39])

Bio 1

Annual Mean Temperature

WorldClim [41]

Bio 12

Annual Precipitation

 

Bio17

Precipitation of the direst quarter

 

Bio 18

Precipitation of Warmest Quarter

 

Bio 19

Precipitation of Coldest Quarter

 

NTL

Distance to stable night light

 

MeanDayLST

Mean Day Land Surface Temperature

MOD11A2 [30]

MaxDayLST

Maximum Day Land Surface Temperature

 

MinDayLST

Minimum Day Land Surface Temperature

 

MeanNightLST

Mean Night Land Surface Temperature

 

MaxNightLST

Maximum Night Land Surface Temperature

 

MinNightLST

Minimum Night Land Surface Temperature

 

EVI

Enhanced Vegetation Index

MOD13Q1 [30]