The ‘WES’ package contains a number of functions that will add
important metadata (e.g. climate variables, elevation, topography, etc)
to your environmental sampling observations. This assumes that you have
constructed a data frame that matches the template_WES_data
data object. A detailed description of the template data can be found HERE.
To retrieve metadata for the location and dates in your data frame,
the functions listed in the table below will download them from open
source APIs using wrappers of functions from other R packages. These
methods should generalized to most locations and dates assuming that the
data are available (e.g. very recent dates may not be uploaded to
climate APIs yet). The list of metadata functions are:
| get_precip_data |
Cumulative daily millimeters of rainfall |
openmeteo |
weather_history |
Open-Meteo
Historical Weather API |
| get_temp_data |
Accumulated
Thermal Units (ATUs) |
openmeteo |
weather_history |
Open-Meteo
Historical Weather API |
| get_esi_data |
Evapoartive
Stress Index (ESI) |
chirps |
get_esi |
SERVIR ClimateSERV
API |
| get_river_discharge_data |
Daily river discharge of the nearest river in cubic
meters per second (\(m^3/s\)) |
openmeteo |
river_discharge |
Open-Meteo Global Flood
API |
|
download_elevation_data,
get_elevation_data
|
Digital Elevation Model (DEM) giving the height in
meters above sea level, spatial resolution is ~100m |
elevatr |
get_elev_raster,
get_elev_point
|
Amazon Web Services
Terrain Tiles |
| get_hydro_data |
slope, aspect, TWI, flow accumulation, distance to
streams |
elevatr, WhiteboxTools R
frontend
|
get_elev_raster,
wbt_d_inf_flow_accumulation,
wbt_wetness_index
|
DEM from Amazon Web Services
Terrain Tiles
|
|
download_admin_data,
get_admin_data
|
Names of all administrative areas for each sampling
site |
NA |
NA |
GeoJSON files from the geoBoundaries API (saved as
ESRI Shapefiles) |
| download_worldpop_data |
WorldPop raster data giving estimated population per
grid cell |
NA |
NA |
GeoTIFF files from the WorldPop FTP
server
|
| get_population_catchment |
Area of drainage catchments (sq km) and total
population within each |
WhiteboxTools R
frontend |
wbt_d_inf_flow_accumulation,
wbt_watershed
|
User supplied elevation and population rasters. |
| get_population_radius |
Total population within a given radius |
raster,
exactextractr
|
buffer,
exactextractr
|
User supplied population raster. |
