Load CMIP6 Downscaled Future Climate Projections

newhall_cmip6_cache(): Uses the geodata package to download and cache data at the specified resolution.

newhall_cmip6_rast(): Create a SpatRaster object. This object contains temperature and precipitation data for the specified data set, at the specified resolution, using the standard jNSM column naming scheme.

newhall_cmip6_subset(): Used to create a subset of the CMIP6 data corresponding to the extent of an input spatial object x.

newhall_cmip6_cache(
  model,
  ssp,
  time,
  resolution = "10m",
  version = "2.1",
  overwrite = FALSE,
  CMIP6_PATH = file.path(newhall_data_dir("cache"), "CMIP6")
)

newhall_cmip6_rast(
  model,
  ssp,
  time,
  resolution = "10m",
  version = "2.1",
  CMIP6_PATH = file.path(newhall_data_dir("cache"), "CMIP6"),
  tiffile = list.files(file.path(CMIP6_PATH, paste0("wc", version, "_", resolution)),
    pattern = "\\.tif$", recursive = TRUE)
)

newhall_cmip6_subset(
  x,
  model,
  ssp,
  time,
  resolution = "10m",
  template = "EPSG:4326",
  CMIP6_PATH = file.path(newhall_data_dir("cache"), "CMIP6")
)

Arguments

model: character. Climate model abbrevation. One of "ACCESS-CM2", "ACCESS-ESM1-5", "AWI-CM-1-1-MR", "BCC-CSM2-MR", "CanESM5", "CanESM5-CanOE", "CMCC-ESM2", "CNRM-CM6-1", "CNRM-CM6-1-HR", "CNRM-ESM2-1", "EC-Earth3-Veg", "EC-Earth3-Veg-LR", "FIO-ESM-2-0", "GFDL-ESM4", "GISS-E2-1-G", "GISS-E2-1-H", "HadGEM3-GC31-LL", "INM-CM4-8", "INM-CM5-0", "IPSL-CM6A-LR", "MIROC-ES2L", "MIROC6", "MPI-ESM1-2-HR", "MPI-ESM1-2-LR", "MRI-ESM2-0", "UKESM1-0-LL"
ssp: character. A valid Shared Socio-economic Pathway code: "126", "245", "370" or "585"
time: character. A valid time period. One of "2021-2040", "2041-2060", or "2061-2080"
resolution: character. Either "10m", "5m", "2.5m" or "30s". In minutes (or seconds) of degrees ("EPSG:4326").
version: character. Version number. Default: "2.1". See geodata::worldclim_global() for details.
overwrite: Force download of new cache files? Default: FALSE.
CMIP6_PATH: Default: file.path(newhall_data_dir("cache"), "CMIP6")
tiffile: Optional: custom vector of paths to files to use to build raster. Defaults to all .TIF files in the specified cache directory and resolution.
x: A SpatVector, SpatRaster, SpatExtent, or any other object type suitable to use with terra::crop().
template: Template SpatRaster or target CRS specification for re-projection. Default: "EPSG:4326

Value

character. Vector of file paths (to CMIP6 .TIF files).

References

Eyring, V., Bony, S., Meehl, G. A., Senior, C. A., Stevens, B., Stouffer, R. J., and Taylor, K. E.: Overview of the Coupled Model Intercomparison Project Phase 6 (CMIP6) experimental design and organization, Geosci. Model Dev., 9, 1937-1958, doi:10.5194/gmd-9-1937-2016, 2016.
Detailed and up-to-date description of the CMIP6 experiments protocol: https://search.es-doc.org/?project=cmip6&

Arguments

Value

References

See also