Download HadEX3 climate extremes data for a GeoJSON region

Downloads and filters HadEX3 ETCCDI climate extremes data to a geographic region defined by a GeoJSON polygon.

Usage

HadEX3Geojson(...)

hadex3_geojson(
  index,
  start_year,
  end_year,
  geojson_file,
  frequency = "annual",
  baseline = "61-90",
  output_dir = tempdir(),
  use_cache = TRUE
)

Arguments

...

Arguments passed to the main function (used by aliases).

index

ETCCDI index name (e.g. "TXx", "Rx1day"). See list_hadex3_indices().

start_year

Start year (1901-2018).

end_year

End year (1901-2018).

geojson_file

Path to a GeoJSON file defining the region.

frequency

Temporal frequency: "annual" or "monthly" (default: "annual").

baseline

Reference period for percentile-based indices: "61-90" (default) or "81-10". Only applies to annual frequency.

output_dir

Directory for temporary files (default: tempdir()).

use_cache

Whether to use cached data (default: TRUE).

Value

data.frame with columns: year (+ month for monthly), latitude, longitude, value, index.

Examples

if (FALSE) { # \dontrun{
data <- hadex3_geojson(
  index = "TXx",
  start_year = 1981, end_year = 2010,
  geojson_file = "india.geojson"
)
} # }