{
  "id": "city-time-machine",
  "version": "ghsl-r2023a-v1-0-tallahassee-gainesville-1km",
  "sourceUrls": [
    "https://jeodpp.jrc.ec.europa.eu/ftp/jrc-opendata/GHSL/GHS_BUILT_S_GLOBE_R2023A/GHS_BUILT_S_E1975_GLOBE_R2023A_54009_1000/V1-0/tiles/GHS_BUILT_S_E1975_GLOBE_R2023A_54009_1000_V1_0_R6_C11.zip",
    "https://jeodpp.jrc.ec.europa.eu/ftp/jrc-opendata/GHSL/GHS_BUILT_S_GLOBE_R2023A/GHS_BUILT_S_E1980_GLOBE_R2023A_54009_1000/V1-0/tiles/GHS_BUILT_S_E1980_GLOBE_R2023A_54009_1000_V1_0_R6_C11.zip",
    "https://jeodpp.jrc.ec.europa.eu/ftp/jrc-opendata/GHSL/GHS_BUILT_S_GLOBE_R2023A/GHS_BUILT_S_E1985_GLOBE_R2023A_54009_1000/V1-0/tiles/GHS_BUILT_S_E1985_GLOBE_R2023A_54009_1000_V1_0_R6_C11.zip",
    "https://jeodpp.jrc.ec.europa.eu/ftp/jrc-opendata/GHSL/GHS_BUILT_S_GLOBE_R2023A/GHS_BUILT_S_E1990_GLOBE_R2023A_54009_1000/V1-0/tiles/GHS_BUILT_S_E1990_GLOBE_R2023A_54009_1000_V1_0_R6_C11.zip",
    "https://jeodpp.jrc.ec.europa.eu/ftp/jrc-opendata/GHSL/GHS_BUILT_S_GLOBE_R2023A/GHS_BUILT_S_E1995_GLOBE_R2023A_54009_1000/V1-0/tiles/GHS_BUILT_S_E1995_GLOBE_R2023A_54009_1000_V1_0_R6_C11.zip",
    "https://jeodpp.jrc.ec.europa.eu/ftp/jrc-opendata/GHSL/GHS_BUILT_S_GLOBE_R2023A/GHS_BUILT_S_E2000_GLOBE_R2023A_54009_1000/V1-0/tiles/GHS_BUILT_S_E2000_GLOBE_R2023A_54009_1000_V1_0_R6_C11.zip",
    "https://jeodpp.jrc.ec.europa.eu/ftp/jrc-opendata/GHSL/GHS_BUILT_S_GLOBE_R2023A/GHS_BUILT_S_E2005_GLOBE_R2023A_54009_1000/V1-0/tiles/GHS_BUILT_S_E2005_GLOBE_R2023A_54009_1000_V1_0_R6_C11.zip",
    "https://jeodpp.jrc.ec.europa.eu/ftp/jrc-opendata/GHSL/GHS_BUILT_S_GLOBE_R2023A/GHS_BUILT_S_E2010_GLOBE_R2023A_54009_1000/V1-0/tiles/GHS_BUILT_S_E2010_GLOBE_R2023A_54009_1000_V1_0_R6_C11.zip",
    "https://jeodpp.jrc.ec.europa.eu/ftp/jrc-opendata/GHSL/GHS_BUILT_S_GLOBE_R2023A/GHS_BUILT_S_E2015_GLOBE_R2023A_54009_1000/V1-0/tiles/GHS_BUILT_S_E2015_GLOBE_R2023A_54009_1000_V1_0_R6_C11.zip",
    "https://jeodpp.jrc.ec.europa.eu/ftp/jrc-opendata/GHSL/GHS_BUILT_S_GLOBE_R2023A/GHS_BUILT_S_E2020_GLOBE_R2023A_54009_1000/V1-0/tiles/GHS_BUILT_S_E2020_GLOBE_R2023A_54009_1000_V1_0_R6_C11.zip"
  ],
  "retrievedAt": "2026-10-04",
  "sourceRelease": "GHSL GHS-BUILT-S R2023A V1-0",
  "licenseReference": "https://jeodpp.jrc.ec.europa.eu/ftp/jrc-opendata/GHSL/GHS_BUILT_S_GLOBE_R2023A/GHS_BUILT_S_E1975_GLOBE_R2023A_54009_1000/V1-0/copyright.txt",
  "commercialStatus": "approved",
  "exportStatus": "approved-with-attribution",
  "attribution": "© European Union, 1995–2026. GHSL GHS-BUILT-S R2023A, V1-0. CC BY 4.0. Cropped and transformed to geographic polygons by MapifyStats; original square-metre values retained.",
  "bounds": [
    -84.65,
    29.35,
    -81.95,
    30.75
  ],
  "time": {
    "kind": "snapshot",
    "epochs": [
      1975,
      1980,
      1985,
      1990,
      1995,
      2000,
      2005,
      2010,
      2015,
      2020
    ],
    "unit": "year"
  },
  "units": {
    "builtSurface": "m²",
    "summary": "km²",
    "cellSize": "1000 m"
  },
  "limitations": [
    "Fixed 40×40 km equal-area study windows aligned to GHSL cells; these are not municipal boundaries.",
    "1 km source cells describe estimated built-up surface, not individual buildings or construction dates.",
    "1975–2020 values combine satellite observations and modelling/interpolation. 2025 and 2030 projections are excluded.",
    "Presentation can blend cells between snapshots; numerical summaries always use the labelled source epoch.",
    "Local shoreline, classification uncertainty, and corrections can create decreases. Missing cells remain unknown."
  ],
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      "release": "R2023A V1-0",
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  "assets": [
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  "ingestionCommand": "python3 scripts/animated/ingest-city.py --offline --check"
}