Build the URL to download climate data from ftp://palantir.boku.ac.at/Public/ClimateData/
Arguments
- climatic_var_single
Character. Climatic variable to download. One of "Tmax","Tmin", "Tavg", or "Prcp".
- year
Numeric. Year for which climatic data will be downloaded.
- version
Character. Climate data version. Either "last" (default) or "4" (version 4).
- temp_res
Character. One of "day" , "month" or "year".