gefsatmosmean
The Global Ensemble Forecast System (GEFS) is a probabilistic weather prediction system managed by NOAA. It utilizes multiple ensemble members to generate a range of possible outcomes, enhancing the ability to assess weather uncertainties and probabilities. The ensemble approach helps to capture the range of possible weather scenarios by running slightly different initial conditions or model configurations, which are referred to as ensemble members or components.
The GEFS Atmos Ensemble Mean is a statistical aggregation of all atmospheric ensemble members, providing a single, representative forecast from the GEFS system. This mean forecast smooths out the variability inherent in individual ensemble members, offering a balanced and reliable view of expected atmospheric conditions such as temperature, wind, and precipitation. The ensemble mean is commonly used as a baseline in risk management, operational planning, and research, giving users a robust and stable prediction while still acknowledging underlying forecast uncertainties.
Name | Level | Info | Description | Introduced | Min Horizon | Max Horizon |
---|---|---|---|---|---|---|
CAPE | surface | ens mean | Convective Available Potential Energy (J/kg) | 2020-10-01T00:00:00Z | 0 | 240 |
CAPE | 180-0 mb above ground | ens mean | Convective Available Potential Energy (J/kg) | 2020-10-01T00:00:00Z | 0 | 240 |
CIN | surface | ens mean | Convective Inhibition (J/kg) | 2020-10-01T00:00:00Z | 0 | 240 |
CIN | 180-0 mb above ground | ens mean | Convective Inhibition (J/kg) | 2020-10-01T00:00:00Z | 0 | 240 |
DPT | 2 m above ground | ens mean | Dew Point Temperature (K) | 2020-10-01T00:00:00Z | 0 | 240 |
GUST | surface | ens mean | Wind Speed (Gust) (m/s) | 2020-10-01T00:00:00Z | 0 | 240 |
HGT | surface | ens mean | Geopotential Height (gpm) | 2020-10-01T00:00:00Z | 0 | 0 |
HGT | cloud ceiling | ens mean | Geopotential Height (gpm) | 2022-10-18T12:00:00Z | 0 | 240 |
HLCY | 3000-0 m above ground | ens mean | Storm Relative Helicity (m^2/s^2) | 2020-10-01T00:00:00Z | 0 | 240 |
ICETK | surface | ens mean | Ice Thickness (m) | 2020-10-01T00:00:00Z | 0 | 240 |
PRES | surface | ens mean | Pressure (Pa) | 2020-10-01T00:00:00Z | 0 | 240 |
PRMSL | mean sea level | ens mean | Pressure Reduced to MSL (Pa) | 2020-10-01T00:00:00Z | 0 | 240 |
PWAT | entire atmosphere (considered as a single layer) | ens mean | Precipitable Water (kg/m^2) | 2020-10-01T00:00:00Z | 0 | 240 |
RH | 2 m above ground | ens mean | Relative Humidity (%) | 2020-10-01T00:00:00Z | 0 | 240 |
SNOD | surface | ens mean | Snow Depth (m) | 2020-10-01T00:00:00Z | 0 | 240 |
SOILW | 0-0.1 m below ground | ens mean | Volumetric Soil Moisture Content (Fraction) | 2020-10-01T00:00:00Z | 0 | 240 |
TMAX | 2 m above ground | ens mean | Maximum Temperature (K) | 2020-10-01T00:00:00Z | 0 | 240 |
TMIN | 2 m above ground | ens mean | Minimum Temperature (K) | 2020-10-01T00:00:00Z | 0 | 240 |
TMP | 2 m above ground | ens mean | Temperature (K) | 2020-10-01T00:00:00Z | 0 | 240 |
TSOIL | 0-0.1 m below ground | ens mean | Soil Temperature (K) | 2020-10-01T00:00:00Z | 0 | 240 |
UGRD | 10 m above ground | ens mean | U-Component of Wind (m/s) | 2020-10-01T00:00:00Z | 0 | 240 |
VGRD | 10 m above ground | ens mean | V-Component of Wind (m/s) | 2020-10-01T00:00:00Z | 0 | 240 |
WEASD | surface | ens mean | Water Equivalent of Accumulated Snow Depth (kg/m^2) | 2020-10-01T00:00:00Z | 0 | 240 |