precipitation_chirps function

Calculate precipitation sums based on CHIRPS

This functions allows to calculate precipitation sums based on the CHIRPS rainfall estimates. Corresponding to the time-frame of the analysis of the portfolio, monthly precipitation sums are calculated.

calc_precipitation_chirps(years = 1981:2020, engine = "extract")

Arguments

• years: A numeric vector indicating the years for which to calculate precipitation statistics.
• engine: The preferred processing functions from either one of "zonal", "extract" or "exactextract" as character.

Returns

A function that returns an indicator tibble with variable precipitation and sum of precipitation (in mm) as value.

Details

The required resources for this indicator are:

• chirps

Examples

## Not run:

library(sf)
library(mapme.biodiversity)

outdir <- file.path(tempdir(), "mapme-data")
dir.create(outdir, showWarnings = FALSE)

mapme_options(
  outdir = outdir,
  verbose = FALSE
)

aoi <- system.file("extdata", "sierra_de_neiba_478140_2.gpkg",
  package = "mapme.biodiversity"
) %>%
  read_sf() %>%
  get_resources(get_chirps(years = 2010)) %>%
  calc_indicators(
    calc_precipitation_chirps(
      years = 2010,
      engine = "extract"
    )
  ) %>%
  portfolio_long()

aoi
## End(Not run)