{
  "ecologySize": [
    1440,
    720
  ],
  "countrySize": [
    4320,
    2160
  ],
  "holdridgeClasses": {
    "2": "Polar desert",
    "3": "Polar dry tundra",
    "4": "Polar moist tundra",
    "5": "Polar wet tundra",
    "9": "Boreal moist forest",
    "10": "Boreal wet forest",
    "6": "Polar rain tundra",
    "8": "Boreal dry bush",
    "7": "Boreal desert",
    "11": "Boreal rain forest",
    "0": "",
    "1": "Ice",
    "15": "Cool temperate moist forest",
    "17": "Cool temperate rain forest",
    "16": "Cool temperate wet forest",
    "13": "Cool temperate desert bush",
    "12": "Cool temperate desert",
    "22": "Warm temperate moist forest",
    "21": "Warm temperate dry forest",
    "20": "Warm temperate thorn steppe",
    "14": "Cool temperate steppe",
    "19": "Warm temperate desert bush",
    "18": "Warm temperate desert",
    "25": "Subtropical desert",
    "26": "Subtropical desert bush",
    "27": "Subtropical thorn steppe",
    "28": "Subtropical dry forest",
    "23": "Warm temperate wet forest",
    "29": "Subtropical moist forest",
    "32": "Tropical desert",
    "33": "Tropical desert bush",
    "36": "Tropical dry forest",
    "34": "Tropical thorn steppe",
    "35": "Tropical very dry forest",
    "24": "Warm temperate rain forest",
    "37": "Tropical moist forest",
    "38": "Tropical wet forest",
    "30": "Subtropical wet forest",
    "31": "Subtropical rain forest"
  },
  "land": {
    "name": "Leemans / Holdridge life zones",
    "publication": 1992,
    "climatePeriod": "1931\u20131960",
    "nativeResolution": "0.5\u00b0",
    "source": "https://data-gis.unep-wcmc.org/portal/home/item.html?id=31d5e80482834f6ba6ee51a2813b82e7",
    "download": "https://datadownload-production.s3.dualstack.us-east-1.amazonaws.com/Holdridge_Life_Zones.zip",
    "documentation": "https://www.ngdc.noaa.gov/ecosys/cdroms/AVHRR97_d2/document/ncillary/lhold/aareadme.htm"
  },
  "temperature": {
    "name": "NOAA OISST v2",
    "period": "1991\u20132020",
    "nativeResolution": "1\u00b0",
    "aggregation": "Days-weighted mean of 12 monthly normals",
    "encodingResolutionC": 0.25,
    "download": "https://downloads.psl.noaa.gov/Datasets/noaa.oisst.v2/sst.ltm.1991-2020.nc"
  },
  "depth": {
    "name": "Natural Earth bathymetry / SRTM Plus",
    "binsM": [
      200,
      1000,
      2000,
      4000
    ],
    "source": "https://www.naturalearthdata.com/downloads/10m-physical-vectors/10m-bathymetry/",
    "download": "https://naturalearth.s3.amazonaws.com/10m_physical/ne_10m_bathymetry_all.zip"
  },
  "countries": {
    "name": "Natural Earth Admin 0",
    "version": "5.1.1",
    "scale": "1:50 million",
    "boundaries": "de facto",
    "source": "https://www.naturalearthdata.com/downloads/50m-cultural-vectors/50m-admin-0-countries-2/"
  },
  "blueMarble": {
    "file": "bluemarble-high.jpg",
    "source": "User-supplied /Users/avsa/Dev/Gosper-Fractals/img/bluemarble-high.jpg",
    "size": [
      10800,
      5400
    ],
    "description": "Preferred Blue Marble image with brighter oceans and seafloor detail. Replaces the previously downloaded July 2004 image."
  },
  "encoding": "RGB: Holdridge class (0 ocean, 254 unclassified land); bathymetry bin 0\u20134; SST v2 (0 unavailable; otherwise 1 + round((Celsius + 5) * 4)). No interpolation between classes.",
  "notes": "Holdridge is potential climate-defined vegetation, not observed contemporary cover. Marine classes are custom triangular seafloor-depth \u00d7 surface-temperature groups: progressively fewer temperature divisions at greater depth. They are not Holdridge or measured deep-water biomes. Gray indicates missing source data. Display presets are custom aggregations. Source value 254 marks unclassified land and is displayed as missing data, never inferred as polar. Each preset has 3, 6, 10 or 15 classes arranged as rows of 1 through 2, 3, 4 or 5.",
  "terrain": {
    "file": "topography.jpg",
    "source": "User source folder: Equirectangular-projection-topographic-world.jpg",
    "description": "Pre-shaded topographic image; fixed lighting. Not a calibrated elevation raster."
  },
  "height": {
    "source": "User-supplied data/height.png",
    "size": [
      21600,
      10800
    ],
    "description": "User-supplied 8-bit grayscale composite of NASA Blue Marble topography and bathymetry in equirectangular projection, approximately 1.8 km per pixel at the equator. Relative brightness is not a calibrated elevation in metres.",
    "manifest": "height/manifest.json",
    "processing": "scripts/prepare-heightmap.py preserves the original and packages a reduced overview plus six full-resolution grayscale tiles with wrapped one-pixel gutters.",
    "credit": "Jesse Allen, NASA Earth Observatory, using GEBCO data produced by the British Oceanographic Data Centre",
    "compositeAuthor": "Alex Van de Sande",
    "topography": "https://visibleearth.nasa.gov/images/73934/topography",
    "bathymetry": "https://visibleearth.nasa.gov/images/73963/bathymetry",
    "imageUsePolicy": "https://visibleearth.nasa.gov/image-use-policy",
    "compositeProcessing": {
      "source": "Processing description supplied by Alex Van de Sande",
      "background": "#8f8f8f",
      "seaLevelGray": 143,
      "rationale": "Approximately 56% brightness, chosen to place sea level between the combined Everest-to-Mariana-Trench range.",
      "bathymetryBlend": "Multiply",
      "topographyBlend": "Screen",
      "renderingNote": "The app uses an independently adjustable sea-level threshold; it is not the original composite background value."
    }
  },
  "riverOverlay": {
    "source": "https://www.naturalearthdata.com/downloads/10m-physical-vectors/10m-rivers-lake-centerlines/",
    "file": "river-lines.json",
    "description": "Natural Earth 1:10m river/lake centerlines; all included ranks, styled by scalerank. Generalized major rivers and tributaries; not a complete stream network."
  },
  "ecologyDisplay": {
    "sampling": "Hexagonal cells in projected map coordinates, aligned to the sixth Gosper subgrid generation. Cell centers are projected to the source sphere before classification sampling.",
    "radiusRelativeToParentHex": 0.0029154518950437317,
    "nativeLandDegrees": 0.5,
    "nativeOceanTemperatureDegrees": 1,
    "limitation": "Changes the display pixel shape; does not add geographic information or increase native source resolution. Relief and rivers retain their original sampling."
  },
  "ecologyFile": "ecology-data-v2.png",
  "wikipedia": {
    "wikipedia-world": {
      "name": "Wikipedia: Default",
      "file": "maps/wikipedia/world.jpg",
      "title": "Equirectangular projection SW",
      "author": "Strebe",
      "url": "https://commons.wikimedia.org/wiki/File:Equirectangular_projection_SW.jpg",
      "license": "CC BY-SA 3.0",
      "licenseURL": "https://creativecommons.org/licenses/by-sa/3.0/",
      "changes": "Outer image frame removed and image resampled; reprojected and styled by Hexagonal Earth.",
      "original": "https://upload.wikimedia.org/wikipedia/commons/8/83/Equirectangular_projection_SW.jpg",
      "processing": "Crop original 2058 x 1036 image to rectangle [8, 8, 2050, 1028], removing the frame; resample to 2048 x 1024 JPEG."
    },
    "wikipedia-tissot": {
      "name": "Wikipedia: Tissot",
      "file": "maps/wikipedia/tissot.svg",
      "title": "Plate Carree with Tissot's Indicatrices of Distortion",
      "author": "Justin Kunimune",
      "url": "https://commons.wikimedia.org/wiki/File:Plate_Carr%C3%A9e_with_Tissot%27s_Indicatrices_of_Distortion.svg",
      "license": "CC BY-SA 4.0",
      "licenseURL": "https://creativecommons.org/licenses/by-sa/4.0/",
      "changes": "Rasterized, reprojected and styled by Hexagonal Earth.",
      "note": "The grid and circles are part of the source image and move with the map.",
      "original": "https://upload.wikimedia.org/wikipedia/commons/1/17/Plate_Carr%C3%A9e_with_Tissot%27s_Indicatrices_of_Distortion.svg",
      "processing": "Original SVG preserved; rasterized on demand at 4096 x 2048 on desktop or 1600 x 800 on compact devices."
    },
    "wikipedia-marble": {
      "name": "Wikipedia: Blue Marble",
      "file": "maps/wikipedia/blue-marble.jpg",
      "mobileFile": "maps/wikipedia/blue-marble-mobile.jpg",
      "title": "Blue Marble 2002",
      "author": "NASA / Reto Stockli and Robert Simmon; combined by Meow",
      "url": "https://commons.wikimedia.org/wiki/File:Blue_Marble_2002.png",
      "license": "Public domain (NASA)",
      "licenseURL": "https://commons.wikimedia.org/wiki/File:Blue_Marble_2002.png#Licensing",
      "changes": "Downsampled and converted to JPEG; reprojected and styled by Hexagonal Earth.",
      "publicDomain": true,
      "download": "https://upload.wikimedia.org/wikipedia/commons/thumb/2/23/Blue_Marble_2002.png/3840px-Blue_Marble_2002.png",
      "processing": "Wikimedia 3840 x 1920 thumbnail converted to JPEG quality 94; mobile copy resized to 1920 x 960 at quality 90."
    }
  }
}