---
license: cc-by-4.0
tags:
- weather
- aarhus
- denmark
- forecast
- observations
- machine-learning
---

# DMI Aarhus Weather Data

Training data and model artifact dataset for the Aarhus weather pipeline. Maintained by `Ciroc0`.

## Primary files

| File | Purpose | Produced by |
| --- | --- | --- |
| `training_matrix.parquet` | Current source of truth for training rows and causal observation context | `dmi-collector` |
| `model_registry.json` | Active bucket registry per target | `dmi-ml-trainer` |
| `model_meta.json` | Training timestamp, sample count and training window | `dmi-ml-trainer` |
| `temperature_models.pkl` | Temperature bundle | `dmi-ml-trainer` |
| `wind_speed_models.pkl` | Wind speed bundle | `dmi-ml-trainer` |
| `wind_gust_models.pkl` | Wind gust bundle | `dmi-ml-trainer` |
| `rain_event_models.pkl` | Rain event bundle | `dmi-ml-trainer` |
| `rain_amount_models.pkl` | Rain amount bundle | `dmi-ml-trainer` |

## Compatibility files

| File | Status | Notes |
| --- | --- | --- |
| `data.parquet` | Legacy | Still readable by compatibility code |
| `xgb_model.pkl` | Legacy | Older single-target artifact, not the current multi-target source of truth |

## Schema highlights for `training_matrix.parquet`

- `target_timestamp`
- `reference_time`
- `lead_time_hours`
- `lead_bucket`
- `dmi_*_pred`
- `actual_*`
- `forecast_wind_u`
- `forecast_wind_v`
- `dmi_*_pred_run_delta`
- `observation_context_timestamp`
- `obs_*`
- `temp_correction_target`
- `wind_speed_correction_target`
- `wind_gust_correction_target`

## Location

- Aarhus, Denmark
- `56.1567`, `10.2108`
- timezone: `Europe/Copenhagen`

## Attribution

This dataset is released under `CC BY 4.0`.

Please preserve attribution to:

- `Ciroc0`
- `Open-Meteo - https://open-meteo.com`
- `DMI / DMI HARMONIE`

## Note on data rights

This dataset contains derived weather data and model artifacts built from upstream services. Attribution requirements from upstream providers still apply.