{
  "tensor_order": "[channel, y, x]",
  "channel_order_matters": true,
  "value_normalization": {
    "applied": false,
    "description": "The released checkpoints expect the same native physical units used during training. No mean/std normalization, min/max scaling, or unit conversion is applied to input values before inference.",
    "missing_or_invalid_values": "Training replaces values <= -9000, NaN, +inf, and -inf with 0.0. The fixed input also carries dynamic and static validity-mask channels."
  },
  "grid": {
    "region": "California",
    "crs": "EPSG:5070",
    "resolution_m": 5000,
    "target_lead_hours": 12
  },
  "dynamic_weather_source": {
    "dataset": "NOAA HRRR",
    "product": "wrfsfcf00",
    "forecast_hour": "f00",
    "issue_hours_utc": [0, 6, 12, 18],
    "reprojection": "Nearest-neighbor resampling from the HRRR grid to the 5 km EPSG:5070 regional grid.",
    "cfgrib_selection_groups": {
      "level2": {
        "filter_by_keys": {
          "typeOfLevel": "heightAboveGround",
          "level": 2
        },
        "variables": ["t2m", "d2m"]
      },
      "level10": {
        "filter_by_keys": {
          "typeOfLevel": "heightAboveGround",
          "level": 10
        },
        "variables": ["u10", "v10"]
      },
      "surface_instant": {
        "filter_by_keys": {
          "typeOfLevel": "surface",
          "stepType": "instant"
        },
        "variables": ["cape", "sp", "blh", "vis", "prate"]
      },
      "surface_accum": {
        "filter_by_keys": {
          "typeOfLevel": "surface",
          "stepType": "accum"
        },
        "variables": ["tp"]
      }
    }
  },
  "notes": [
    "FIRMS active-fire detections are used to derive the occupancy target, not as an input channel.",
    "WFIGS and MTBS are supporting event-level resources and are not part of the pretrained occupancy input.",
    "The regional cache contains zero firewx feature channels and one firewx_valid channel, so the released input has 16 channels total.",
    "CAPE is selected from the HRRR surface instantaneous cfgrib group: typeOfLevel=surface and stepType=instant. It is not the most-unstable or layer CAPE channel.",
    "firewx_valid is a cache-level dynamic input presence mask. In the released California regional cache it is 1.0 for every grid cell and is not a per-variable HRRR missing-data mask.",
    "static_valid is the fraction of the four static layers that are valid at a grid cell after reprojection. It can take values 0.0, 0.25, 0.5, 0.75, or 1.0."
  ],
  "channels": [
    {
      "index": 0,
      "name": "t2m",
      "source": "NOAA HRRR",
      "cfgrib_group": "level2",
      "cfgrib_filter_by_keys": {
        "typeOfLevel": "heightAboveGround",
        "level": 2
      },
      "level_or_height": "2 m above ground",
      "units": "K",
      "normalization": "none",
      "role": "2 m temperature"
    },
    {
      "index": 1,
      "name": "d2m",
      "source": "NOAA HRRR",
      "cfgrib_group": "level2",
      "cfgrib_filter_by_keys": {
        "typeOfLevel": "heightAboveGround",
        "level": 2
      },
      "level_or_height": "2 m above ground",
      "units": "K",
      "normalization": "none",
      "role": "2 m dew point"
    },
    {
      "index": 2,
      "name": "u10",
      "source": "NOAA HRRR",
      "cfgrib_group": "level10",
      "cfgrib_filter_by_keys": {
        "typeOfLevel": "heightAboveGround",
        "level": 10
      },
      "level_or_height": "10 m above ground",
      "units": "m s-1",
      "normalization": "none",
      "role": "10 m east-west wind component"
    },
    {
      "index": 3,
      "name": "v10",
      "source": "NOAA HRRR",
      "cfgrib_group": "level10",
      "cfgrib_filter_by_keys": {
        "typeOfLevel": "heightAboveGround",
        "level": 10
      },
      "level_or_height": "10 m above ground",
      "units": "m s-1",
      "normalization": "none",
      "role": "10 m north-south wind component"
    },
    {
      "index": 4,
      "name": "cape",
      "source": "NOAA HRRR",
      "cfgrib_group": "surface_instant",
      "cfgrib_filter_by_keys": {
        "typeOfLevel": "surface",
        "stepType": "instant"
      },
      "level_or_height": "surface",
      "units": "J kg-1",
      "normalization": "none",
      "role": "surface instantaneous convective available potential energy"
    },
    {
      "index": 5,
      "name": "sp",
      "source": "NOAA HRRR",
      "cfgrib_group": "surface_instant",
      "cfgrib_filter_by_keys": {
        "typeOfLevel": "surface",
        "stepType": "instant"
      },
      "level_or_height": "surface",
      "units": "Pa",
      "normalization": "none",
      "role": "surface pressure"
    },
    {
      "index": 6,
      "name": "blh",
      "source": "NOAA HRRR",
      "cfgrib_group": "surface_instant",
      "cfgrib_filter_by_keys": {
        "typeOfLevel": "surface",
        "stepType": "instant"
      },
      "level_or_height": "surface diagnostic",
      "units": "m",
      "normalization": "none",
      "role": "boundary-layer height"
    },
    {
      "index": 7,
      "name": "vis",
      "source": "NOAA HRRR",
      "cfgrib_group": "surface_instant",
      "cfgrib_filter_by_keys": {
        "typeOfLevel": "surface",
        "stepType": "instant"
      },
      "level_or_height": "surface diagnostic",
      "units": "m",
      "normalization": "none",
      "role": "visibility"
    },
    {
      "index": 8,
      "name": "prate",
      "source": "NOAA HRRR",
      "cfgrib_group": "surface_instant",
      "cfgrib_filter_by_keys": {
        "typeOfLevel": "surface",
        "stepType": "instant"
      },
      "level_or_height": "surface",
      "units": "kg m-2 s-1",
      "normalization": "none",
      "role": "precipitation rate"
    },
    {
      "index": 9,
      "name": "tp",
      "source": "NOAA HRRR",
      "cfgrib_group": "surface_accum",
      "cfgrib_filter_by_keys": {
        "typeOfLevel": "surface",
        "stepType": "accum"
      },
      "level_or_height": "surface accumulation",
      "units": "kg m-2",
      "normalization": "none",
      "role": "accumulated precipitation"
    },
    {
      "index": 10,
      "name": "firewx_valid",
      "source": "cache validity channel",
      "units": "binary mask",
      "normalization": "none",
      "values": [1.0],
      "role": "cache-level dynamic input presence mask for this regional cache; not a per-variable HRRR missing-data mask"
    },
    {
      "index": 11,
      "name": "static_valid",
      "source": "static reprojection mask",
      "units": "fraction",
      "normalization": "none",
      "values": [0.0, 0.25, 0.5, 0.75, 1.0],
      "role": "fraction of static layers valid at the grid cell after reprojection"
    },
    {
      "index": 12,
      "name": "fuel_fbfm40",
      "source": "LANDFIRE FBFM40",
      "units": "categorical code",
      "normalization": "none",
      "role": "fire-behavior fuel model"
    },
    {
      "index": 13,
      "name": "canopy_cover",
      "source": "LANDFIRE CC",
      "units": "provider-native canopy-cover value",
      "normalization": "none",
      "role": "canopy cover"
    },
    {
      "index": 14,
      "name": "housing_density",
      "source": "Wildfire Risk to Communities",
      "units": "provider-native housing-density value",
      "normalization": "none",
      "role": "housing-unit density"
    },
    {
      "index": 15,
      "name": "population",
      "source": "LandScan Global 2024",
      "units": "provider-native population value",
      "normalization": "none",
      "role": "population exposure"
    }
  ]
}