download_pvolfiles: Download polar volume ('pvol') files from the NEXRAD archive

In bioRad: Biological Analysis and Visualization of Weather Radar Data

Download polar volume (pvol) files from the NEXRAD archive

Description

Download a selection of polar volume (pvol) files from the NEXRAD Level II archive data.

Usage

download_pvolfiles(
  date_min,
  date_max,
  radar,
  directory = ".",
  overwrite = FALSE,
  bucket = "noaa-nexrad-level2",
  directory_tree = TRUE
)

Arguments

date_min	POSIXct. Start date of file selection. If no timezone are provided, it will be assumed to be UTC.
date_max	POSIXct. End date of file selection.If no timezone are provided, it will be assumed to be UTC.
radar	character (vector). 4-letter radar code(s) (e.g. "KAMA")
directory	character. Path to local directory where files should be downloaded
overwrite	logical. TRUE for re-downloading and overwriting previously downloaded files of the same names.
bucket	character. Bucket name to use.
directory_tree	logical. Whether to create the yyyy/mm/dd/radar directory structure. TRUE by default.

Value

NULL. The function's primary effect is to download selected polar volume files from the NEXRAD Level II archive to a specified local directory, and to provide a message and a progress bar in the console indicating the download status.

Examples

# create temporary directory
if (requireNamespace("aws.s3", quietly = TRUE)) {
temp_dir <- paste0(tempdir(),"/bioRad_tmp_files")
dir.create(temp_dir)
download_pvolfiles(
  date_min = as.POSIXct("2002-10-01 00:00", tz = "UTC"),
  date_max = as.POSIXct("2002-10-01 00:05", tz = "UTC"),
  radar = "KBRO",
  directory = temp_dir,
  overwrite = TRUE
)
# Clean up
unlink(temp_dir, recursive = TRUE)
}

bioRad documentation built on June 17, 2025, 1:07 a.m.