worldclim_data: Download WorldClim v2.1 Bioclimatic Data
In chooseGCM: Selecting General Circulation Models for Species Distribution Modeling

worldclim_data

R Documentation

Download WorldClim v2.1 Bioclimatic Data

Description

This function allows downloading data from WorldClim v2.1 (https://www.worldclim.org/data/index.html) for multiple GCMs, time periods, and SSPs.

Usage

worldclim_data(period = 'current', variable = 'bioc', year = '2030',
gcm = 'mi', ssp = '126', resolution = 10, path = NULL)

Arguments

`period`	Character. Can be 'current' or 'future'.
`variable`	Character. Specifies which variables to retrieve. Possible entries are: 'tmax', 'tmin', 'prec', and/or 'bioc'.
`year`	Character or vector. Specifies the year(s) to retrieve data for. Possible entries are: '2030', '2050', '2070', and/or '2090'.
`gcm`	Character or vector. Specifies the GCM(s) to consider for future scenarios. See the table below for available options.
`ssp`	Character or vector. SSP(s) for future data. Possible entries are: '126', '245', '370', and/or '585'.
`resolution`	Numeric. Specifies the resolution. Possible values are 10, 5, 2.5, or 30 arcseconds.
`path`	Character. Directory path to save the downloaded files. Default is NULL.

Details

This function creates a folder in path. All downloaded data will be stored in this folder. Note: While it is possible to retrieve a large volume of data, it is not recommended to do so due to the large file sizes. For example, datasets at 30 arcseconds resolution can exceed 4 GB. If the function fails to retrieve large datasets, consider increasing the timeout by setting options(timeout = 600). This will increase the timeout to 10 minutes.

Available GCMs to be used in the gcm argument:

CODE	GCM
ac	ACCESS-CM2
ae	ACCESS-ESM1-5
bc	BCC-CSM2-MR
ca	CanESM5
cc	CanESM5-CanOE
ce	CMCC-ESM2
cn	CNRM-CM6-1
ch	CNRM-CM6-1-HR
cr	CNRM-ESM2-1
ec	EC-Earth3-Veg
ev	EC-Earth3-Veg-LR
fi	FIO-ESM-2-0
gf	GFDL-ESM4
gg	GISS-E2-1-G
gh	GISS-E2-1-H
hg	HadGEM3-GC31-LL
in	INM-CM4-8
ic	INM-CM5-0
ip	IPSL-CM6A-LR
me	MIROC-ES2L
mi	MIROC6
mp	MPI-ESM1-2-HR
ml	MPI-ESM1-2-LR
mr	MRI-ESM2-0
uk	UKESM1-0-LL

Value

This function does not return any value.

Author(s)

Luíz Fernando Esser (luizesser@gmail.com) https://luizfesser.wordpress.com

References

https://www.worldclim.org/data/index.html

Examples


# download data from multiple periods:
year <- c("2050", "2090")
worldclim_data("future", "bioc", year, "mi", "126", 10, path=tempdir())

# download data from one specific period:
worldclim_data("future", "bioc", "2070", "mi", "585", 10, path=tempdir())

chooseGCM documentation built on April 3, 2025, 5:27 p.m.