Download CHIRPS Raster Data from UCSB Archive — download

Downloads .tif.gz CHIRPS rainfall data files from the UCSB Climate Hazards Group archive for a specified dataset and date range. Supports monthly, dekadal (3 per month), and pentadal (6 per month) resolutions. Files are downloaded and optionally unzipped to a local directory.

Usage

download_chirps(
  dataset,
  start,
  end = NULL,
  out_dir = ".",
  unzip = TRUE,
  max_workers = 6L
)

Arguments

dataset: Character. One of the dataset codes listed in chirps_options().
start: Character. Start date in "YYYY-MM" format (e.g., "2020-01").
end: Character. End date in "YYYY-MM" format. If NULL, only start month is downloaded.
out_dir: Directory path where downloaded files will be saved. Will be created if it does not exist.
unzip: Logical. If TRUE, the .tif.gz files will be unzipped after download.
max_workers: Integer. Maximum concurrent downloads. Defaults to 6.

Value

No return value. Side effects include downloading CHIRPS .tif.gz and .tif files to the specified folder.

Details

Use chirps_options() to view all available datasets and their metadata.

Examples

# View available datasets
chirps_options()
#> # A tibble: 4 × 4
#>   dataset             frequency label                                 subdir    
#>   <chr>               <chr>     <chr>                                 <chr>     
#> 1 global_monthly      monthly   Global (Monthly)                      global_mo…
#> 2 africa_monthly      monthly   Africa (Monthly)                      africa_mo…
#> 3 camer-carib_monthly monthly   Caribbean & Central America (Monthly) camer-car…
#> 4 EAC_monthly         monthly   East African Community (Monthly)      EAC_month…

# Download Africa monthly CHIRPS for Jan–Mar 2022
if (FALSE) { # \dontrun{
download_chirps(
  dataset = "africa_monthly",
  start = "2022-01",
  end = "2022-03",
  out_dir = "chirps_data"
)
} # }