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Models

stated on the page: ecmwf.intcarriesECMWF open dataOpen data and APIsstated on the page: open-meteo.comredistributesOpen-MeteoOpen data and APIsstated on the page: ecmwf.intrunsECMWFBodiesstated on the page: meteopt.comvisualisesMeteoPTSites and appsstated on the page: huggingface.cois trained on and start…ECMWF IFSModelsECMWF AIFSModels

Left: what points at it. Right: what it points at. Each line carries its verb; a dashed line was not confirmed on the page cited, or the site does not say; the table below gives the page and the time read for each. From model-ecmwf-aifs.json

Where a forecast comes from · Models · id model-ecmwf-aifs · as data

ECMWF's Artificial Intelligence Forecasting System: a machine-learned global model run operationally beside IFS, with open outputs and open weights.

Address: https://www.ecmwf.int/en/forecasts/datasets/open-data (leaves this site)

What it is connected to, and who says so

ThisVerbThatThe page that says soReadCheck
ECMWF AIFSis trained on and starts fromECMWF IFShuggingface.co: "neural network (GNN) encoder and decoder, and a sliding window transformer processor, and is trained on ECMWF’s ERA5 re-analysis and ECMWF’s operational numerical weather prediction (NWP) analyses. It has a flexible and " Trained on ERA5 and on IFS analyses; each run starts from the IFS analysis: a machine-learned model has no observations of its own.11:28 UTC, 11 Novstated on the page
ECMWF AIFSis what ECMWF open data carriesECMWF open dataecmwf.int: "Browse the data files Licence: description View licence A subset of ECMWF real-time forecast data from the IFS and AIFS models is made available to the public free of charge. Their use is governed by the Creative Commons"11:28 UTC, 11 Novstated on the page
ECMWF AIFSredistributed byOpen-Meteoopen-meteo.com: "transition-none"> ECMWF IFS 0.25° svg]:size-3.5 grid place-content-center text-current transition-none"> ECMWF AIFS 0.25° Single Note: The default Best Match provides the best forecast for any given location worldwide. S"11:29 UTC, 11 Novstated on the page
ECMWF AIFSrun byECMWFecmwf.int: "Browse the data files Licence: description View licence A subset of ECMWF real-time forecast data from the IFS and AIFS models is made available to the public free of charge. Their use is governed by the Creative Commons"11:28 UTC, 11 Novstated on the page
ECMWF AIFSvisualised byMeteoPTmeteopt.com: "Comunidade de Meteorologia Português Español English menu_home menu_forum menu_models menu_global GFS ECMWF AIGFS ECMWF-AIFS UKMO ICON ARPÈGE menu_comparator menu_ensemble GEFS ECMWF ENS menu_observation menu_temp menu_s" The models menu of the community's home page.11:30 UTC, 11 Novstated on the page

Licence: what we may do with it

ECMWF open data (IFS and AIFS real-time forecasts): CC BY 4.0, with ECMWF's Terms of Use (ecmwf.int, read 11:28 UTC, 11 Nov, stated on the page).

ReadStoreShowTransformAttribution
yesyesyes, with attributionyes, with attribution"Copyright © [year] European Centre for Medium-Range Weather Forecasts (ECMWF)", the source, the licence, and a statement of any change made.

No service guarantee; the open subset is coarser (0.25°) and later than what members receive.

ECMWF AIFS (the trained model itself): CC BY 4.0 (model card) (huggingface.co, read 11:28 UTC, 11 Nov, stated on the page).

ReadStoreShowTransformAttribution
yesyesyes, with attributionyes, with attributionECMWF, with the model card cited.

Running it needs the IFS analysis as input (also open data) and a GPU.

Not a warning service: this page explains where data comes from. For warnings follow IPMA and ANEPC.