barograph

Enrich aircraft trajectories — starting with weather at full model resolution.

barograph is a uv workspace of Python packages that attach meteorological information to aircraft trajectories (ADS-B, flight data). Its first package, barograph-met, retrieves wind and temperature at aircraft positions from ERA5 and Météo-France ARPEGE:

fast — only the bytes a flight needs are downloaded (partial reads of compressed ARCO-ERA5 blocks and of GRIB2 messages), for every flight of a time slice at once;
exact on the vertical — ERA5's 137 native model levels, with each grid column's actual surface pressure;
explicit — no silent extrapolation: every missing value carries a reason (outside the grid, above/below the levels, not published, before the archive starts);
compatible — a façade with the same API as FastMeteo.

Package	Role
barograph-met	Retrieval and interpolation of ERA5, ARPEGE and Open-Meteo archives at aircraft positions

Install barograph-met

Requires Python 3.12+ on a POSIX system (Linux or macOS).

With uv, in an activated virtual environment:

uv pip install 'barograph-met[grib,pandas,openmeteo]'

Or with pip:

python -m pip install 'barograph-met[grib,pandas,openmeteo]'

For a uv-managed project, use uv add barograph-met and select extras as needed. Start with the first-flight tutorial.

Research use only

This software is provided for research purposes and is not a regulatory or operational tool; EUROCONTROL disclaims any responsibility for misuse or operational application.