{
  "forecast_starts": [0, 6, 12, 18],
  "forecast_length": { "0": "48 hour", "6": "48 hour", "12": "48 hour", "18": "48 hour" },
  "output_frequency": "1 hour",
  "geometry": { "lon_east": 14.3, "lon_west": 24.3, "lon_delta": 0.025, "lat_south": 44.9, "lat_north": 49.5, "lat_delta": 0.025 },
  "height_levels": [100], "height_level_unit": "m",
  "pressure_levels": [1000, 850, 700, 500], "pressure_level_unit": "hPa",

  "surface variables": {
   "Tsurf":     { "description": "surface temperature", "unit": "K"},
   "SnowM":     { "description": "snow mass", "unit": "kg/m2"},
   "CloudTot":  { "description": "total cloud cover", "unit": "-"},
   "PSurf":     { "description": "surface pressure", "unit": "Pa"},
   "Snowd":     { "description": "snow depth", "unit": "mm"},
   "SWRadSurf": { "description": "short wave radiation at the surface", "unit": "J/m2", "extra": "cumulated value"},
   "InstPrec":  { "description": "total instantenous precipitation", "unit": "mm/h"},
   "PrecTot":   { "description": "total precipitation", "unit": "mm", "extra": "cumulated value"},
   "SnowTot":   { "description": "total snow and graupel", "unit": "mm", "extra": "cumulated value"},
   "SurfRain":  { "description": "total rainfall", "unit": "mm", "extra": "cumulated value"},
   "U10":       { "description": "U-component of wind at 10m", "unit": "m/s"},
   "V10":       { "description": "V-component if wind at 10m", "unit": "m/s"},
   "Wgust":     { "description": "wind gust at 10m", "unit": "m/s"},
   "T2":        { "description": "temperature at 2m", "unit": "K"},
   "RelHum2":   { "description": "relative humidity at 2m", "unit": "-"},
   "Tmin2":     { "description": "minimum temperature at 2m of previous hour", "unit": "K"},
   "Tmax2":     { "description": "minimum temperature at 2m of previous hour", "unit": "K"},
   "pblh":      { "description": "planetary boundary layer height", "unit": "m"},
   "DT":        { "description": "dewpoint temperature at 2m", "unit": "K"},
   "mslpres":   { "description": "mean sea level pressure", "unit": "Pa"},
   "Cape":      { "description": "convective available potential energy", "unit": "J/kg"},
   "CCL":       { "description": "convective condensation level", "unit": "m"},
   "surfgeo":   { "description": "surface geopotentiel", "unit": "m2/s2", "extra": "only at forecast step 0"},
   "lsmask":    { "description": "land/sea mask", "unit": "-", "extra": "only at forecast step 0"}
  },
  "height level variables": {
    "u_pbl": { "description": "eastward wind in the planetary boundary layer", "unit": "m/s"},
    "v_pbl": { "description": "northward wind in the planetary boundary layer", "unit": "m/s"},
    "T_pbl": { "description": "temperature in the planetary boundary layer", "unit": "K"},
    "RelHum_pbl": { "description": "relative humidity in the planetary boundary layer", "unit": "-"}
  },
  "pressure level variables": {
    "u": { "description": "eastward wind on pressure levels", "unit": "m/s"},
    "v": { "description": "northward wind on pressure levels", "unit": "m/s"},
    "T": { "description": "temperature on pressure levels", "unit": "K"},
    "RelHum": { "description": "relative humidity on pressure levels", "unit": "-"},
    "Geopot": { "description": "geopotential on pressure levels", "unit": "m2/s2"}
  }
}