Global Ensemble Forecast System (GEFS) 1.0 Degree

Description

The Global Ensemble Forecast System (GEFS) is a weather forecast model made up of 21 separate forecasts, or ensemble members. The National Centers for Environmental Prediction (NCEP) started the GEFS to address the nature of uncertainty in weather observations, which are used to initialize weather forecast models. The proverbial butterfly flapping her wings can have a cascading effect leading to wind gusts thousands of miles away. This extreme example illustrates that tiny, unnoticeable differences between reality and what is actually measured can, over time, lead to noticeable differences between what a weather model forecast predicts and reality itself. The GEFS attempts to quantify the amount of uncertainty in a forecast by generating an ensemble of multiple forecasts, each minutely different, or perturbed, from the original observations. With global coverage, GEFS is produced four times a day with weather forecasts going out to 16 days and a 6 hour temporal resolution. This dataset has 1.0 degree horizontal resolution.

Resources

Name Format Description Link
0 Landing page for the dataset. https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ncdc:C00691/html
0 Description of the data and related resources. https://www.ncei.noaa.gov/products/weather-climate-models/global-ensemble-forecast
0 Select and order files in the offline archive. https://www.ncei.noaa.gov/has/HAS.FileAppRouter?datasetname=GFS&subqueryby=STATION&applname=&outdest=FILE
0 Information on AWS data access. https://registry.opendata.aws/noaa-gefs/
0 Web site providing overview and technical documentation for the GEFS. https://www.emc.ncep.noaa.gov/emc/pages/numerical_forecast_systems/gefs.php
0 NCEI home page with information, data access and contact information. https://www.ncei.noaa.gov
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords

Tags

  • humidity
  • ice pellets
  • vertical location
  • terrestrial hydrosphere
  • dew point temperature
  • nomads
  • precipitation
  • tropopause
  • water vapor profiles
  • sea surface
  • incoming solar radiation
  • land surface
  • altitude
  • soils
  • national climatic data center
  • atmospheric temperature
  • nesdis
  • sea surface temperature
  • wind dynamics
  • boundary layer temperature
  • precipitation amount
  • snow cover
  • oceans
  • surface winds
  • water vapor
  • heat flux
  • snow water equivalent
  • vegetation index
  • snow
  • the noaa operational model archive and distribution system
  • water vapor processes
  • sea level pressure
  • atmospheric water vapor
  • 100 km - < 250 km or approximately 1 degree - < 2.5 degrees
  • atmosphere
  • air quality
  • noaa
  • air temperature
  • outgoing longwave radiation
  • total precipitable water
  • ocean temperature
  • longwave radiation
  • global
  • evaporation
  • troposphere
  • snow depth
  • planetary boundary layer height
  • u.s. department of commerce
  • land use/land cover
  • tropospheric ozone
  • earth science
  • rain
  • geographic region
  • radiative flux
  • sea ice
  • surface pressure
  • potential temperature
  • solar radiation
  • doc/noaa/nesdis/ncei
  • shortwave radiation
  • convection
  • atmospheric pressure measurements
  • skin temperature
  • boundary layer winds
  • snow/ice
  • atmospheric radiation
  • sea ice concentration
  • atmospheric stability
  • wind shear
  • wind profiles
  • vertical wind velocity/speed
  • solid precipitation
  • upper level winds
  • pressure thickness
  • liquid precipitation
  • atmospheric pressure
  • surface radiative properties
  • maximum/minimum temperature
  • doc/noaa/nesdis/ncdc
  • sleet
  • boundary layer
  • soil temperature
  • atmospheric winds
  • vorticity
  • geopotential height
  • precipitation rate
  • soil moisture/water content
  • land cover
  • surface temperature
  • albedo
  • upper air temperature
  • freezing rain
  • water vapor indicators
  • national centers for environmental information
  • stratosphere
  • land use/land cover classification

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