dataset · Global

ERA5 Hourly - ECMWF Climate Reanalysis

ERA5 is the fifth generation ECMWF atmospheric reanalysis of the global climate. It is produced by the Copernicus Climate Change Service (C3S) at ECMWF. Reanalysis combines model data with observations from across the world into a globally complete and consistent dataset using the laws of physics. ERA5 provides hourly estimates for a large number of atmospheric, ocean-wave and land-surface quantities. The data cover the Earth on a roughly 31 km grid and resolve the atmosphere using 137 levels fr

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Source details

Licence: proprietary

Evidence quality: 35.2

Listed in gee public catalogue API on 2026-10-16; relevance/value screened (haiku).

Metadata checked: 2026-10-14T13:20:00.000Z

What's in it

Data offered docs-verified: hourly 2m temperature · hourly 2m dew point temperature · mean sea level pressure · surface pressure · 10m and 100m wind components · 10m wind gust · sea surface temperature · sea-ice temperature (layers 1-4) · mean convective precipitation rate · hydrological, radiation, ocean-wave, vegetation and soil parameters
Coverage docs-verified: Global · 1940-01-01T00:00:00Z to 2026-10-09T23:00:00Z (listed dataset availability; DOCS also say 'Data is available from 1940 to the present')
Resolution docs-verified: Spatial: pixel size 27830 m (~27.8 km; described as a roughly 31 km grid). Temporal: hourly (1 hour aggregation for mean parameters).
Formats docs-verified: Google Earth Engine ImageCollection (ee.ImageCollection)
Access llm-inferred: Google Earth Engine catalogue dataset; ENTRY metadata records licence as 'proprietary' and auth as null. Terms not stated in DOCS text.

Useful for

Use cases llm-inferred: Long-term (1940-present) hourly temperature and humidity context for flood or drainage climate-change narratives · Hourly 10m and 100m wind inputs for site exposure or wind screening where no local station exists · Sea surface temperature and ocean-wave context for coastal scheme assessments
Audience llm-inferred: hydrologists · flood risk consultants · drainage engineers · climate risk consultants · GIS analysts

Limitations

Constraints docs-verified: Global reanalysis at ~31 km grid; not suited to site-scale or local detail without downscaling · Model grid-box averages differ from point observations, so local comparisons need caution · Licence recorded as proprietary; check terms before commercial use · Requires Google Earth Engine access (inferred; not stated in DOCS) · DOCS text is truncated, so the full band list and any further limitations are not verified

Evidence

Check upstream coverage, uncertainty and licence before use. Station observations are not forecasts or design levels.