rdwd is an R package to select, download and read climate data from the
German Weather Service (Deutscher Wetterdienst, DWD).
The DWD provides thousands of datasets with weather observations online at opendata.dwd.de.
Since May 2019,
rdwd also supports reading the Radolan (binary) raster data at
A website with more information, examples, use cases and an interactive map of the DWD stations can be found at https://bookdown.org/brry/rdwd
Usage for observational weather data from the measuring stations usually looks something like the following:
# Download and install (once only): install.packages("rdwd") # Load the package into library (needed in every R session): library(rdwd) # select a dataset (e.g. last year's daily climate data from Potsdam city): link <- selectDWD("Potsdam", res="daily", var="kl", per="recent") # Actually download that dataset, returning the local storage file name: file <- dataDWD(link, read=FALSE) # Read the file from the zip folder: clim <- readDWD(file, varnames=TRUE) # Inspect the data.frame: str(clim)
For data interpolated onto a 1 km raster, including radar data up to the last hour, see the corresponding chapter on the website.
New to R
If you're new to R, these links might help you to get started:
rdwd::updateRdwd() # checks version and (if needed) calls remotes::install_github("brry/rdwd", build_vignettes=TRUE)
Suggested (not mandatory) dependencies:
RCurlfor indexFTP and selectDWD(..., current=TRUE)
bit64for readDWD(..., fread=TRUE)
dwdradarfor readDWD with gridded data
readrfor readDWD.stand(..., fast=TRUE)
XMLfor local testing, development and documentation
spfor interactive/static maps, see OSMscale installation tips
Note: on Linux (Ubuntu), install
RCurl via the terminal (CTRL+ALT+T, note lowercase rcurl):
sudo apt install r-cran-rcurl