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Get raw CHIRPS raster data

Source: R/get_chirps_raw.R
get_chirps_raw.Rd

Download Global CHIRPS precipitation data in its original raster format.

Usage

get_chirps_raw(
  dates,
  version = "2.0",
  resolution = 0.05,
  type = c("rnl", "sat"),
  verbose = FALSE,
  ...
)

Arguments

dates

Character vector of length two with start and end dates in "YYYY-MM-DD" format.

version

Character or numeric. CHIRPS version. Supported values are "2.0" and "3.0".

resolution

Numeric. Spatial resolution for CHIRPS v2. Supported values are 0.05 and 0.25. Ignored for CHIRPS v3.

type

Character. CHIRPS v3 product type. Supported values are "rnl" and "sat". Ignored for CHIRPS v2.

verbose

Logical. If TRUE, prints the URLs used.

...

Additional arguments reserved for future use.

Value

A SpatRaster with one layer per day.

Details

This function returns CHIRPS raster layers as a SpatRaster without extracting values, reshaping the data, or converting it to a data frame. It is intended for users who need direct access to the original raster product for custom spatial workflows.

CHIRPS v3 (Climate Hazards Center Infrared Precipitation with Stations) is a high-resolution (0.05°), quasi-global rainfall dataset spanning 60°N to 60°S from 1981 to near-present.

CHIRPS v3 combines satellite-based thermal infrared rainfall estimates with in-situ station observations to produce gridded precipitation estimates over land.

Two daily products are available:

rnl

Daily values derived using ECMWF ERA5 precipitation to partition pentadal CHIRPS totals into daily amounts.

sat

Daily values derived using NASA IMERG precipitation to partition pentadal CHIRPS totals into daily amounts.

Additional information is available at: https://www.chc.ucsb.edu/data/chirps3

Daily product documentation: https://data.chc.ucsb.edu/products/CHIRPS/v3.0/daily/readme.txt

References

Climate Hazards Center Infrared Precipitation with Stations version 3 (CHIRPS3) Data Repository. doi:10.15780/G2JQ0P

Version 3 Funk, C., Peterson, P., Harrison, L. et al. (2026). The Climate Hazards Center Infrared Precipitation with Stations, Version 3. Scientific Data, 13, 718. doi:10.1038/s41597-026-07096-4

Version 2 Funk C. et al. (2015). Scientific Data, 2, 150066. doi:10.1038/sdata.2015.66

Examples

if (interactive()) {
r1 = get_chirps_raw(dates = c("2017-12-15", "2017-12-31"),
                    version = "2.0")

r2 = get_chirps_raw(dates = c("2017-12-15", "2017-12-31"),
                    version = "3.0",
                    type = "rnl")
}