Extract NLDAS from local download Extract NLDAS meteorology for a point from a local download of the full grid

This function extracts NLDAS data from grids that have been downloaded and stored locally. Once upon a time, you could query these files directly from the internet, but now they're behind a tricky authentication wall. Files are saved as a netCDF file in CF conventions. These files are ready to be used in the general PEcAn workflow or fed into the downscaling workflow.

Usage

extract.local.NLDAS(
  outfolder,
  in.path,
  start_date,
  end_date,
  lat.in,
  lon.in,
  overwrite = FALSE,
  verbose = FALSE,
  ...
)

Arguments

outfolder

- directory where output files will be stored

in.path

- path to the raw full grids

start_date

- first day for which you want to extract met (yyyy-mm-dd)

end_date

- last day for which you want to extract met (yyyy-mm-dd)

lat.in

site latitude in decimal degrees

lon.in

site longitude in decimal degrees

overwrite

logical. Download a fresh version even if a local file with the same name already exists?

verbose

logical. Passed on to ncvar_def and nc_create to control printing of debug info

...

Other arguments, currently ignored

Author

Christy Rollinson