ECMWF IFS CY41r2 High-Resolution Operational Forecasts ...

• Main Author: European Centre For Medium-Range Weather Forecasts
• Format: Dataset
• Language: English
• Published: UCAR/NCAR - Research Data Archive 2016
• Subjects: EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Air Temperature; EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vorticity; EARTH SCIENCE > Atmosphere > Altitude > Geopotential Height; EARTH SCIENCE > Atmosphere > Atmospheric Winds > Upper Level Winds; EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Humidity; EARTH SCIENCE > Atmosphere > Atmospheric Winds > Vertical Wind Motion; EARTH SCIENCE > Atmosphere > Atmospheric Winds > Convergence/Divergence; EARTH SCIENCE > Atmosphere > Air Quality > Tropospheric Ozone; EARTH SCIENCE > Land Surface > Topography > Terrain Elevation; EARTH SCIENCE > Biosphere > Vegetation > Vegetation Cover; EARTH SCIENCE > Biosphere > Vegetation > Vegetation Species; EARTH SCIENCE > Oceans > Sea Ice > Ice Extent; EARTH SCIENCE > Hydrosphere > Snow/Ice > Albedo; EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Density; EARTH SCIENCE > Oceans > Ocean Temperature > Sea Surface Temperature; EARTH SCIENCE > Cryosphere > Snow/Ice > Snow/Ice Temperature; EARTH SCIENCE > Land Surface > Soils > Soil Moisture/Water Content; EARTH SCIENCE > Land Surface > Soils > Soil Classification; EARTH SCIENCE > Atmosphere > Atmospheric Pressure > Surface Pressure; EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Precipitable Water; EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Water Vapor; EARTH SCIENCE > Land Surface > Soils > Soil Temperature; EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Depth; EARTH SCIENCE > Land Surface > Topography > Surface Roughness; EARTH SCIENCE > Atmosphere > Atmospheric Pressure > Sea Level Pressure; EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency; EARTH SCIENCE > Atmosphere > Atmospheric Winds > Surface Winds; EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Surface Air Temperature; EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Dew Point Temperature; EARTH SCIENCE > Land Surface > Surface Radiative Properties > Albedo; EARTH SCIENCE > Land Surface > Land Temperature > Skin Temperature; EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow/Ice Temperature; EARTH SCIENCE > Atmosphere > Precipitation > Precipitation Amount; EARTH SCIENCE > Atmosphere > Precipitation > Snow; EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Heat Flux; EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation; EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Longwave Radiation; EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Shortwave Radiation; EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Outgoing Longwave Radiation; EARTH SCIENCE > Atmosphere > Atmospheric Winds > Wind Stress; EARTH SCIENCE > Atmosphere > Atmospheric Water Vapor > Evaporation; EARTH SCIENCE > Atmosphere > Atmospheric Pressure > Gravity Wave; EARTH SCIENCE > Atmosphere > Altitude > Planetary Boundary Layer Height; EARTH SCIENCE > Atmosphere > Atmospheric Radiation > Sunshine; EARTH SCIENCE > Hydrosphere > Surface Water > Runoff; EARTH SCIENCE > Hydrosphere > Snow/Ice > Snow Melt; EARTH SCIENCE > Atmosphere > Atmospheric Winds > Convection; EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Maximum/Minimum Temperature; Sea ice
• Online Access: https://dx.doi.org/10.5065/d68050zv; http://rda.ucar.edu/datasets/ds113.1/

ECMWF has implemented a significant resolution upgrade and methodology for high-resolution forecasts (HRES) and ensemble forecasts (ENS) beginning January of 2016. HRES is now performed via a transform grid with a nominal grid point spacing of 9 kilometers (0.08 degrees), and is carried out with IFS (Integrated Forecast System) model cycle CY41r2. Improvements in computational efficiency and effective resolution have been brought about by implementing a triangular cubic octahedral reduced Gaussian grid in which the shortest spatial wavelength is represented by at least four grid points anywhere on the globe, as opposed to the former linear arrangement whereby the shortest wavelength was represented by two grid points, while at the same time retaining the same number of spherical harmonics and triangular truncation. (The term "cubic" is due to the ability of the grid to represent cubic products in the dynamical equations.) In addition, the reduction of grid points along latitude circles as one approaches the ...