gribdl - Downloading Weather Data made easy

gribdl makes it easy and to download weather data fast from the Deutscher Wetterdienst (DWD) and the National Oceanic and Atmospheric Administration (NOAA).

Supported Weather Models

• DWD ICON-EU
• DWD ICON-D2
• DWD ICON
• NOAA GFS
• NOAA NAM (not yet implemented)

You can read more about the data sources here and here.

Features

• HTTP/2 support for faster downloads
• Parallel downloads
• Setting max forecast hours
• Downloading multiple parameters at once

Usage

Printing help:

docker run --rm -v ${PWD}/output:/app/output ghcr.io/hstin-de/gribdl --help

Downloading 8h T_2M from ICON-EU:

docker run --rm -v ${PWD}/output:/app/output ghcr.io/hstin-de/gribdl dwd icon-eu --param=T_2M --maxStep=8

Downloading 8h TMP from GFS:

docker run --rm -v ${PWD}/output:/app/output ghcr.io/hstin-de/gribdl noaa gfs --param=TMP --maxStep=8

Building

git clone https://github.com/hstin-de/gribdl.git
cd gribdl

docker build -t hstin-de/gribdl .

Usage Without Docker

You can also run gribdl without docker but its not recommended as all the dependencies are included within the docker image.

Prequisites:

• go 1.21.5
• cdo 1.9.10 with netcdf and grib2 support

Generating Weights

The weights are used to interpolate DWD ICON Data from an icosahedral grid to a regular grid. You can generate the weights with the following commands:

chmod +x generateWeights.sh
./generateWeights.sh

This will download about 1.2GB of data and generate the weights. The computed weights are stored in the weights directory.

Running:

You can run gribdl with the following command without compiling it into a standalone binary:

cd src && go run main.go --help

Building:

You can also build gribdl into a standalone binary with the following command:

cd src && go build main.go -o gribdl