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| Field | Meaning |
|---|---|
[ROOT] | Top-level URL of a hosting location (see Where to get it on the overview page) |
[yyyymmdd] | Reference (base) date of the forecast |
[HH] | Reference time: 00, 06, 12 or 18 |
[model] | Production model: ifs, or an AIFS model (see the AIFS page) |
[resol] | Horizontal resolution: 0p25 or 0p1 |
[stream] | Forecasting system: see the What's available table (scda/scwv retired at 50r1) |
[step] / [U] | Forecast step and its unit: h for hours, m for months (seasonal only) |
[type] | Forecast type: fc, ef, ep, tf, etc. |
[levtype] | Level type — : 0.1° only: sfc (surface fields) or pl (pressure-level fields). levtype=sol fields are merged into sfc files.The 0.25° tier is a single combined file and carries no suffix. |
[format] | grib2 for fields, bufr for tracks, index for metadata |
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