NOAA GEFSv12: Global Ensemble Weather Re-forecasts, 2000-2019

NOAA's Global Ensemble Forecast System version 12 (GEFSv12) provides a multi-decadal reforecast dataset spanning 2000-2019. These retrospective forecasts were generated once daily with 5 ensemble members, plus a weekly 11-member forecast extending to 35 days. The data accompanies the next-generation operational ensemble prediction system.

Use Cases

• Benchmarking operational forecast skill based on historical reforecast data
• Developing sub-seasonal prediction models based on +35 day lead time forecasts
• Analyzing ensemble forecast uncertainty based on 5- and 11-member sets
• Calibrating real-time weather forecasts using the 2000-2019 retrospective period

Strengths

• Covers a 20-year retrospective period from 2000 to 2019
• Includes weekly 11-member ensemble forecasts with a +35 day lead time
• Produced by NOAA, a leading meteorological authority

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment

Provenance

Source

NOAA

Collection Method

Retrospective forecasts generated from the Global Ensemble Forecast System, version 12 (GEFSv12) model.

Time Range

2000-2019

Freshness

Last update date is unknown; freshness unverified

Geography

Global