# European Centre for Medium-Range Weather Forecasts
*consortium . companies*

Intergovernmental organisation of 23 European member states, established 1975, headquartered in Reading, UK (data centres in Bologna, Italy and Bonn, Germany). Operates global numerical weather prediction (NWP) models and data assimilation systems processing 40 million satellite and in-situ observations per day. Delivers two EU Copernicus services: the Copernicus Atmosphere Monitoring Service (CAMS) and Copernicus Climate Change Service (C3S). Produces ERA5 and other reanalysis datasets. Operates one of Europe's largest supercomputer complexes. ~350 staff.

## Specifications
- **country**: UK
- **operator domains**: ["ecmwf.int"]
- **entity type**: company
- **last verified date**: 2026-06-10
- **verified by**: community
- **claim status**: unclaimed
- **attributes**: {"kind":"consortium","country":"UK","operator_domains":"[\"ecmwf.int\"]","description":"Intergovernmental organisation of 23 European member states, established 1975, headquartered in Reading, UK (data centres in Bologna, Italy and Bonn, Germany). Operates global numerical weather prediction (NWP) models and data assimilation systems processing 40 million satellite and in-situ observations per day. Delivers two EU Copernicus services: the Copernicus Atmosphere Monitoring Service (CAMS) and Copernicus Climate Change Service (C3S). Produces ERA5 and other reanalysis datasets. Operates one of Europe's largest supercomputer complexes. ~350 staff."}

## Editorial
The European Centre for Medium-Range Weather Forecasts (ECMWF) is an intergovernmental organisation of 23 European member states, established in 1975 and headquartered in Reading, UK, with additional data centres in Bologna, Italy and Bonn, Germany. [^wiki-ecmwf] Approximately 350 staff operate global numerical weather prediction (NWP) models and data assimilation systems that process around 40 million satellite and in-situ observations per day.

ECMWF produces operational short-range and extended-range forecasts and seasonal outlooks (up to 12 months) alongside the ERA5 climate reanalysis dataset, which covers 1940 to the present at 31 km resolution and hourly time steps. [^eumetsat-ecmwf] As an Entrusted Entity under the EU Copernicus programme, ECMWF delivers the Copernicus Atmosphere Monitoring Service (CAMS) and the Copernicus Climate Change Service (C3S), assimilating data from satellites including Meteosat, Metop, MODIS, AIRS, CrIS, and IASI into operational models and reanalyses. [^ecmwf-copernicus-background]

## Sources
- [wiki-ecmwf] | European Centre for Medium-Range Weather Forecasts - Wikipedia | https://en.wikipedia.org/wiki/European_Centre_for_Medium-Range_Weather_Forecasts | tier=community | accessed=2026-06-10
- [ecmwf-copernicus-background] | Copernicus Atmosphere Monitoring Service - Background information | https://atmosphere.copernicus.eu/background-information | tier=agency-doc | accessed=2026-06-10
- [eumetsat-ecmwf] | European Centre for Medium-Range Weather Forecasts - EUMETSAT | https://www.eumetsat.int/european-centre-medium-range-weather-forecasts | tier=agency-doc | accessed=2026-06-10

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