[
  {
    "model": "Canopulse UCRI LA v1.0",
    "status": "frozen",
    "released": "2026-05-23",
    "geography": "Los Angeles County (2,498 tracts)",
    "components": [
      "CDS",
      "HES",
      "ISS",
      "SVS",
      "EJS"
    ],
    "formula": "UCRI = 0.25*CDS + 0.25*HES + 0.15*ISS + 0.20*SVS + 0.15*EJS",
    "component_scaling": "county-wide percentile (LA County)",
    "ejs_definition": "CalEnviroScreen 4.0 overall CES percentile",
    "notes": "Basis of the submitted UCRI paper. Never modified."
  },
  {
    "model": "Canopulse California UCRI v2.0",
    "status": "frozen",
    "released": "2026-07-10",
    "data_foundation_freeze": "2026-07-06",
    "public_product_release_freeze": "2026-07-10",
    "geography": "California (9,129 tracts; 7,895 scored, 1,204 provisional, 30 unscorable)",
    "components": [
      "CDS",
      "HES",
      "ISS",
      "SVS",
      "EBS"
    ],
    "formula": "UCRI = 0.25*CDS + 0.25*HES + 0.15*ISS + 0.20*SVS + 0.15*EBS",
    "component_scaling": "statewide percentile (all CA tracts)",
    "ebs_definition": "CalEnviroScreen 4.0 Pollution Burden percentile only",
    "changes_from_v1": [
      "EJS renamed to EBS and redefined as CalEnviroScreen 4.0 Pollution Burden percentile only (avoids double-counting population vulnerability with SVS)",
      "Component percentiles computed statewide (v1.0 used county-wide)",
      "Heat overlap blend is order-independent per-pixel mean (v1.0 used sequential pairwise average)",
      "Composite raster archived as Cloud-Optimized GeoTIFF with full scene manifest",
      "State, county, and place ranks added",
      "Place (city) assignment via largest land-area overlap with 25% minimum threshold",
      "Snow bit (bit 5) included in QA_PIXEL mask for LST processing"
    ],
    "la_backcompat": "LA tract values differ from v1.0 by design (statewide percentiles + EBS redefinition). Spearman rho=0.988 over 2251 common frozen tracts; see outputs/tables/la_v1_v2_correlation.csv.",
    "release_date_note": "Data foundation freeze: July 6, 2026. Public product release freeze: July 10, 2026."
  }
]