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Add dataset card

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+ ---
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+ license: cc-by-4.0
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+ pretty_name: Weather Model Forecast Archive 2026
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+ tags:
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+ - weather
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+ - forecasting
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+ - benchmark
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+ ---
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+ # Weather Model Forecast Archive (2026)
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+ Daily record, from 2026-01-01, of what each public global weather model forecast and what was observed, for 24 world cities. It is the data behind the [Global Weather Model Leaderboard](https://huggingface.co/spaces/FINAL-Bench/Weather-Model-Leaderboard). Updated every day.
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+ `forecasts_vs_observed_2026.csv`
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+ | Column | Meaning |
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+ |---|---|
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+ | `date` | UTC day being verified |
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+ | `city` | one of 24 cities |
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+ | `lead_days` | how many days earlier the forecast was issued (1, 3, 5, 7) |
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+ | `observed_era5_tmax_c` | ERA5 daily maximum 2 m temperature, degrees Celsius |
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+ | `ecmwf_ifs025` ... `metno_seamless` | each model's forecast of the same quantity |
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+ Models: ECMWF IFS, ECMWF AIFS, NOAA GFS, NOAA AIGFS, DWD ICON, JMA GSM, ECCC GEM, MET Norway. Empty cells mean the model issued no forecast for that day and lead.
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+ Weather data by [Open-Meteo.com](https://open-meteo.com/) (CC BY 4.0). Verification: ERA5, Copernicus Climate Change Service. Compiled by VIDRAFT.