tum-esm/download-met-data

download ERA5 data from CDS and convert it using era52arl

Download ERA5 Data and convert the GRIB to ARL files

What is it?

This tool downloads weather data from the ERA5 dataset (https://www.ecmwf.int/en/forecasts/dataset/ecmwf-reanalysis-v5) from CDS (https://cds.climate.copernicus.eu/) and converts the GRIB files to ARL files using the era52arl tool, which is part of HYSPLIT (https://www.arl.noaa.gov/hysplit-2/).

How to set it up?

Dependency management with poetry: https://python-poetry.org/docs/#installation

Set up the project interpreter:

# Create virtual environment (a local copy of python)
python3.9 -m venv .venv

# Activate virtual environment
source .venv/bin/activate

# Install dependencies
poetry install

How to run it?

1. Use the file config.example.json to create a config.json file in your project directory for your setup

2. Run the script

   1. Either use the dates specified in config.json ...

      python3.9 run.py

   2. ... or pass the date to use to the program as an inline parameter:

      python3.9 run.py 20211016

Request will be cached in the cache/ directory. Please do not remove or empty this directory.