ECMWF ensemble (ENS)

Kept by incident.meteorology@web-summit.dinis, 11 November 2026, 11:36 UTC

Models

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-ens.json

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

The same IFS run many times from slightly different starts: the spread between members is the forecast's uncertainty, the thing a single number hides.

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

What it is connected to, and who says so

This	Verb	That	The page that says so	Read	Check
ECMWF ensemble (ENS)	is the same model as	ECMWF IFS	ecmwf.int: "are published at two resolutions: the existing 0.25 degrees and, from 20 October 2026, a finer 0.1 degrees - both produced from the same IFS model and interpolated to a lat/long grid. The lower resolution data are releas" The ensemble and the high-resolution forecast are one model, the IFS, run differently.	11:28 UTC, 11 Nov	stated on the page
ECMWF ensemble (ENS)	is what ECMWF open data carries	ECMWF open data	ecmwf.int: "These products are a subset of the full Catalogue of ECMWF Real-time Products and are based on the medium-range ( high-resolution and ensemble ) and seasonal forecast models. IFS data are published at two resolutions: th"	11:28 UTC, 11 Nov	stated on the page
ECMWF ensemble (ENS)	run by	ECMWF	ecmwf.int: "These products are a subset of the full Catalogue of ECMWF Real-time Products and are based on the medium-range ( high-resolution and ensemble ) and seasonal forecast models. IFS data are published at two resolutions: th"	11:28 UTC, 11 Nov	stated on the page

Licence: what we may do with it

No licence row yet covers this node: unclear until one does. The licence table.

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