getTRMM: Download TRMM 3B42 Data

In environmentalinformatics-marburg/heavyRain: Download and Pre-Process CHIRPS and TRMM Rainfall Data Sets in R

Description

Download TRMM 3B42 version 7 daily (NetCDF) or 3-hourly (HDF) files for a given time span from the NASA FTP servers.

Usage

getTRMM(
  begin,
  end,
  type = c("daily", "3-hourly"),
  dsn = ".",
  xml = FALSE,
  overwrite = FALSE,
  quiet = TRUE,
  cores = 1L,
  ...
)

Arguments

begin, end	Start and end date as Date or character.
type	character. Temporal resolution of downloaded TRMM data. Currently available options are "daily" (default) and "3-hourly".
dsn	character. Download folder, defaults to the current working directory.
xml	logical, defaults to FALSE. If TRUE, .xml files associated with each .nc4 file are also downloaded to 'dsn'.
overwrite	logical, defaults to FALSE. Determines whether existing files are overwritten.
quiet	logical. If TRUE (default), possible status messages and progress bar are suppressed, see download.file.
cores	integer. Number of cores for parallel processing. Note that this takes only effect if a sufficiently fast internet connection is available.
...	In case 'begin' and/or 'end' are character objects, additional arguments passed to as.Date.

Value

If xml = FALSE (default), a character vector of local file paths. Else a list of file paths with each entry corresponding to a single date.

Author(s)

Florian Detsch

References

MacRitchie K (2015) README Document for the Tropical Rainfall Measurement Mission (TRMM). Available online: https://disc2.gesdisc.eosdis.nasa.gov/data/TRMM_L3/TRMM_3B43/doc/README.TRMM_V7.pdf (2018-10-01).

See Also

download.file.

Examples

## Not run: 
## download TRMM 3B42 daily data from Jan 1 to Jan 5, 2015
getTRMM(begin = "2015-01-01", end = "2015-01-05")

## same for 3-hourly data
getTRMM(begin = "2015-01-01", end = "2015-01-05", type = "3-hourly")

## End(Not run)

environmentalinformatics-marburg/heavyRain documentation built on Sept. 1, 2020, 9:53 a.m.