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(1) GRIB data streams could contain those variables as a composite field with parameter ID=139
Daily instantaneous data
GRIB | netCDF | ||||
time step | name | parameter ID | units | CF standard name | canonical units |
24h | Sea-ice cover | 31 | (0-1) | sea_ice_area_fraction | 1 |
24h | Volumetric soil water layer 1 (2) | 39 | m3 m-3 | moisture_content_of_soil_layer (2) | kg m-2 |
24h | Volumetric soil water layer 2 (2) | 40 | m3 m-3 | ||
24h | Volumetric soil water layer 3 (2) | 41 | m3 m-3 | ||
24h | Volumetric soil water layer 4 (2) | 42 | m3 m-3 | ||
24h | Snow depth | 141 | m of water equivalent | lwe_thickness_of_surface_snow_amount | m |
24h | Snow density | 33 | kg m-3 | snow_density | kg m-3 |
24h | Total column water vapour (3) | 137 | kg m-2 | atmosphere_mass_content_of_water_vapor (3) | kg m-2 |
24h | Total column cloud liquid water (3) | 78 | kg m-2 | atmosphere_mass_content_of_cloud_liquid_water (3) | kg m-2 |
24h | Total column cloud ice water (3) | 79 | kg m-2 | atmosphere_mass_content_of_cloud_ice (3) | kg m-2 |
(2) soil water content should be provided for all native model levels (so 39-42 GRIB parameter IDs just apply to ECMWF/IFS soil model)
(3) some details about these total column water quantities is still under discussion, specifically the convenience for time-aggregation (averaging) and some encoding details.
Daily time-aggregated data (accumulations, max/min,etc)
GRIB | netCDF | ||||
time step | name | parameter ID | units | CF standard name | canonical units |
24h | Maximum temperature at 2 metres in the last 24 hours | 51 | K | air_temperature | K |
24h | Minimum temperature at 2 metres in the last 24 hours | 52 | K | air_temperature | K |
24h | 10 metre wind gust since previous post-processing | 49 | m s-1 | wind_speed_of_gust | m s-1 |
24h | Large-scale precipitation (34) | 142 | m | lwe_thickness_of_stratiform_precipitation_amount (34) | m |
24h | Convective precipitation (34) | 143 | m | lwe_thickness_of_convective_precipitation_amount (34) | m |
24h | Total precipitation | 228 | m | lwe_thickness_of_precipitation_amount | m |
24h | Snowfall | 144 | m of water equivalent | lwe_thickness_of_snowfall_amount | m |
24h | Surface sensible heat flux | 146 | J m-2 | surface_upward_sensible_heat_flux | W m-2 |
24h | Surface latent heat flux | 147 | J m-2 | surface_upward_latent_heat_flux | W m-2 |
24h | Surface solar radiation downwards | 169 | J m-2 | surface_downwelling_shortwave_flux_in_air | W m-2 |
24h | Surface thermal radiation downwards | 175 | J m-2 | surface_downwelling_longwave_flux_in_air | W m-2 |
24h | Surface net solar radiation | 176 | J m-2 | surface_net_downward_shortwave_flux | W m-2 |
24h | Surface net thermal radiation | 177 | J m-2 | surface_net_downward_longwave_flux | W m-2 |
24h | Top net solar radiation | 178 | J m-2 | toa_net_downward_shortwave_flux | W m-2 |
24h | Top incoming solar radiation | 212 | J m-2 | toa_incoming_shortwave_flux | W m-2 |
24h | Top net thermal radiation | 179 | J m-2 | toa_net_downward_longwave_flux | W m-2 |
24h | Eastward turbulent surface stress | 180 | N m-2 s | surface_downward_eastward_stress | Pa |
24h | Northward turbulent surface stress | 181 | N m-2 s | surface_downward_northward_stress | Pa |
24h | Evaporation | 182 | m of water equivalent | lwe_thickness_of_water_evaporation_amount | m |
24h | Runoff (45) | 205 | m | runoff_amount (45) | kg m-2 |
24h | Surface runoff | 8 | m | surface_runoff_amount | kg m-2 |
24h | Sub-surface runoff | 9 | m | subsurface_runoff_amount | kg m-2 |
(34) Large-scale and convective precipitation are not required if total precipitation is provided (and viceversa)
(45) Runoff is not required if both surface and sub-surface runoff are provided (and viceversa)
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Pressure Levels Fields
At the following 11 12 pressure levels (hPa): 1000, 925, 850, 700, 500, 400, 300, 200, 100, 50, 30 and 10
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(*) Vorticity and divergence are not required if U and V are provided (and viceversa)
* Comment from MeteoFrance (Constantin Ardilouze) about soil moisture
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Ocean variables
List agreed on 28th October 2019 (Updated on 13th March 2020)
Time frequency | Monthly averages |
Grid | 1x1-degree (C3S atmosphere grid) |
File format | netCDF (see encoding proposal) |
name | CF standard name | units | comments |
---|---|---|---|
Sea surface salinity | sea_water_practical_salinity | psu | |
Depth of 20C isotherm | depth_of_isosurface_of_sea_water_potential_temperature | m | |
Depth of 26C isotherm | depth_of_isosurface_of_sea_water_potential_temperature | m | |
Depth of 28C isotherm | depth_of_isosurface_of_sea_water_potential_temperature | m | |
Depth of 14C isotherm | depth_of_isosurface_of_sea_water_potential_temperature | m | |
Depth of 17C isotherm | depth_of_isosurface_of_sea_water_potential_temperature | m | |
Mean sea water potential temperature in upper 300 m | sea_water_potential_temperature | K | |
Mean salinity in upper 300 m | sea_water_practical_salinity | psu | |
Sea surface height above geoid | sea_surface_height_above_geoid | m | |
Mixed-layer depth defined by sigma theta 0.01 kg/m3 | ocean_mixed_layer_thickness_defined_by_sigma_theta | m |
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Mixed-layer depth defined by sigma theta 0.03 kg/m3 | ocean_mixed_layer_thickness_defined_by_sigma_theta | m |
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Sea ice thickness | sea_ice_thickness | m | Mean thickness where there is ice |