Load example climate data rasters covering a portion of western North America
at ~5 km resolution. Requires the terra package. The data are for two time
periods (recent decades and future: year 2041-2070, scenario SSP585, model gfdl-esm4).
For each period, the data has a raster containing two scaled climate variables
(climatic water deficit (CWD) and actual evapotranspiration (AET)), which
were derived using raw data from CHELSA v2 (Karger et al. 2017).