{
  "schemaVersion": 1,
  "source": {
    "name": "NOAA/NCEI OISST v2.1",
    "url": "https://www.ncei.noaa.gov/data/sea-surface-temperature-optimum-interpolation/v2.1/access/avhrr/202610/oisst-avhrr-v02r01.20261013_preliminary.nc",
    "sha256": "78fb554255f48f610a7923ea2d5ea754e1ca6b60c91e60a4dde90876ea933812",
    "bytes": 1532909,
    "documentation": "https://www.ncei.noaa.gov/products/optimum-interpolation-sst",
    "citation": "https://doi.org/10.25921/RE9P-PT57"
  },
  "retrievedAt": "2026-10-15T10:20:07.707051+00:00",
  "date": "2026-10-13",
  "validTime": "2026-10-13T12:00:00Z",
  "processingStatus": "preliminary",
  "grid": {
    "width": 1440,
    "height": 720,
    "west": -180,
    "south": -90,
    "dx": 0.25,
    "dy": 0.25,
    "rowOrder": "north-to-south",
    "firstLongitude": -179.875,
    "firstLatitude": 89.875,
    "projection": "EPSG:4326",
    "wrapLongitude": true
  },
  "fields": {
    "sst": {
      "file": "sst-6dbc5d896029a6d2.png",
      "sha256": "6dbc5d896029a6d2f36574fd0f09b9f591c88c260516ac800adb174685dfa83d",
      "bytes": 566277,
      "date": "2026-10-13",
      "units": "°C",
      "offset": -100,
      "scale": 0.01,
      "missing": 65535,
      "encoding": "uint16-rg-opaque-png",
      "width": 1440,
      "height": 720,
      "validCells": 559032,
      "valueRange": [
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        33.74
      ]
    },
    "anom": {
      "file": "anom-b2e10ce37c02b0fd.png",
      "sha256": "b2e10ce37c02b0fd5672bb8ef6426adc9581cec5b4fd335f22b9223ec24730ec",
      "bytes": 559974,
      "date": "2026-10-13",
      "units": "°C",
      "offset": -100,
      "scale": 0.01,
      "missing": 65535,
      "encoding": "uint16-rg-opaque-png",
      "width": 1440,
      "height": 720,
      "validCells": 559032,
      "valueRange": [
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        7.8
      ],
      "baseline": "1971–2000"
    }
  },
  "counts": {
    "totalCells": 1036800,
    "validCells": 559032,
    "sourceSstMissing": 345650,
    "sourceAnomalyMissing": 345650,
    "iceProxyMasked": 132118,
    "sourceIcePresent": 132118,
    "sourceIceMissing": 904682,
    "sstErrorAvailable": 559032
  },
  "methods": {
    "resampling": "None; rows reversed and longitude halves rotated only.",
    "mask": "Source SST/anomaly missing cells and NOAA ice proxy packed code >=15 (fraction >=0.15). Shared mask for both fields.",
    "iceCaution": "NOAA seven-day median ice is a proxy input for SST analysis; not an independent current sea-ice observation.",
    "uncertainty": "Source err is SST analysis error, not separate anomaly uncertainty; retained as a range only.",
    "sstErrorRangeC": [
      0.11,
      0.66
    ],
    "packing": "R/G unsigned16 hundredths with offset -100;65535 missing;B and A always255, preventing canvas premultiplication changes."
  }
}