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Global Ensemble Forecast System (GEFS)
![A regional North American plot of GEFS forecast data valid at July 13, 2012, at 00 UTC A regional North American plot of GEFS forecast data valid at July 13, 2012, at 00 UTC](https://webarchive.library.unt.edu/web/20201218054947im_/https://www.ncdc.noaa.gov/sites/default/files/GEFS%20-%20gens-a_2_20120712_0000_024_1013hPa-small.gif)
A regional North American plot of GEFS forecast data valid at July 13, 2012, at 00 UTC. This 24-hour forecast shows one mean sea-level pressure contour (or isobar) at 1013 hPa for each of the 21 members in the ensemble. Where contours line up show greater certainty in the pressure forecast. Where the contours spread out show uncertainty: over central, northern Canada and due south of Alaska, for example. This image was produced by downloading 21 files of GEFS data through NOMADS and visualizing with the Grid Analysis and Display System (GrADS).
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Product Types
Model | Grid/Scale | Period of Record | Model Cycle | Output Timestep | Data Access Links |
---|---|---|---|---|---|
GEFS, 21-Member | 003 (1º) - Domain |
23May2020 - Present (approx. 1mo to present online) |
4/day: 00, 06, 12, 18UTC | 6-hourly: Anl, +000 to +384 | NCEI: HTTP TDS AIRS |
GEFS, 21-Member, Historical | 003 (1º) - Domain |
22Jul2018 - 14May2020 |
4/day: 00, 06, 12, 18UTC | 6-hourly: Anl, +000 to +384 | NCEI: HTTP TDS AIRS |
GEFS, 21-Member | 002 (2.5º) - Domain | 23May2020 - Present (approx. 1mo to present online) | 4/day: 00, 06, 12, 18UTC | 6-hourly: Anl, +000 to +384 | NCEI: HTTP TDS AIRS |
GEFS, 21-Member, historical | 002 (2.5º) - Domain | 22Jul2018 - 14May2020 | 4/day: 00, 06, 12, 18UTC | 6-hourly: Anl, +000 to +384 | NCEI: HTTP TDS AIRS |
GEFS, 21-Member | 003 (1º) - Domain | NCEP 7-day archive to present | 4/day: 00, 06, 12, 18UTC | 6-hourly: Anl, +000 to +384 | NCEP: HTTP |
Data Usage Notes
None
Publication References
None
Miscellaneous Documentation
None