{
  "version": "1.1",
  "processed_utc": "2026-10-04",
  "period": "2026-06-01T00:00:00Z/2026-08-31T23:59:59Z",
  "source": "USGS Landsat 8/9 Collection 2 Level 2, Tier 1, L2SP; public Microsoft Planetary Computer STAC",
  "dates": [
    {
      "id": "lst_20260606",
      "label": "6. 6. 2026.",
      "local_time": "11:45 CEST",
      "acquisition_utc": "2026-06-06T09:45:05.741066Z",
      "scene_id": "LC08_L2SP_190028_20260606_02_T1",
      "platform": "landsat-8",
      "valid_land_fraction": 0.0,
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      "valid_land_pixels": 0,
      "thermal_status": "no_valid_land_LST"
    },
    {
      "id": "lst_20260607",
      "label": "7. 6. 2026.",
      "local_time": "11:39 CEST",
      "acquisition_utc": "2026-06-07T09:39:04.458042Z",
      "scene_id": "LC09_L2SP_189028_20260607_02_T1",
      "platform": "landsat-9",
      "valid_land_fraction": 0.330002,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC09_L2SP_189028_20260607_02_T1",
      "valid_land_pixels": 210517,
      "thermal_status": "usable"
    },
    {
      "id": "lst_20260614",
      "label": "14. 6. 2026.",
      "local_time": "11:45 CEST",
      "acquisition_utc": "2026-06-14T09:45:19.400919Z",
      "scene_id": "LC09_L2SP_190028_20260614_02_T1",
      "platform": "landsat-9",
      "valid_land_fraction": 0.42442,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC09_L2SP_190028_20260614_02_T1",
      "valid_land_pixels": 270749,
      "thermal_status": "usable"
    },
    {
      "id": "lst_20260622",
      "label": "22. 6. 2026.",
      "local_time": "11:45 CEST",
      "acquisition_utc": "2026-06-22T09:45:17.053426Z",
      "scene_id": "LC08_L2SP_190028_20260622_02_T1",
      "platform": "landsat-8",
      "valid_land_fraction": 0.626158,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC08_L2SP_190028_20260622_02_T1",
      "valid_land_pixels": 399443,
      "thermal_status": "usable"
    },
    {
      "id": "lst_20260630",
      "label": "30. 6. 2026.",
      "local_time": "11:45 CEST",
      "acquisition_utc": "2026-06-30T09:45:29.958373Z",
      "scene_id": "LC09_L2SP_190028_20260630_02_T1",
      "platform": "landsat-9",
      "valid_land_fraction": 0.911822,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC09_L2SP_190028_20260630_02_T1",
      "valid_land_pixels": 581676,
      "thermal_status": "usable"
    },
    {
      "id": "lst_20260701",
      "label": "1. 7. 2026.",
      "local_time": "11:39 CEST",
      "acquisition_utc": "2026-07-01T09:39:12.062799Z",
      "scene_id": "LC08_L2SP_189028_20260701_02_T1",
      "platform": "landsat-8",
      "valid_land_fraction": 0.002869,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC08_L2SP_189028_20260701_02_T1",
      "valid_land_pixels": 1830,
      "thermal_status": "usable"
    },
    {
      "id": "lst_20260709",
      "label": "9. 7. 2026.",
      "local_time": "11:39 CEST",
      "acquisition_utc": "2026-07-09T09:39:20.104511Z",
      "scene_id": "LC09_L2SP_189028_20260709_02_T1",
      "platform": "landsat-9",
      "valid_land_fraction": 0.75524,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC09_L2SP_189028_20260709_02_T1",
      "valid_land_pixels": 481788,
      "thermal_status": "usable"
    },
    {
      "id": "lst_20260716",
      "label": "16. 7. 2026.",
      "local_time": "11:45 CEST",
      "acquisition_utc": "2026-07-16T09:45:37.347515Z",
      "scene_id": "LC09_L2SP_190028_20260716_02_T1",
      "platform": "landsat-9",
      "valid_land_fraction": 0.0,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC09_L2SP_190028_20260716_02_T1",
      "valid_land_pixels": 0,
      "thermal_status": "no_valid_land_LST"
    },
    {
      "id": "lst_20260717",
      "label": "17. 7. 2026.",
      "local_time": "11:39 CEST",
      "acquisition_utc": "2026-07-17T09:39:16.075712Z",
      "scene_id": "LC08_L2SP_189028_20260717_02_T1",
      "platform": "landsat-8",
      "valid_land_fraction": 0.0,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC08_L2SP_189028_20260717_02_T1",
      "valid_land_pixels": 0,
      "thermal_status": "no_valid_land_LST"
    },
    {
      "id": "lst_20260724",
      "label": "24. 7. 2026.",
      "local_time": "11:45 CEST",
      "acquisition_utc": "2026-07-24T09:45:32.981787Z",
      "scene_id": "LC08_L2SP_190028_20260724_02_T1",
      "platform": "landsat-8",
      "valid_land_fraction": 0.022404,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC08_L2SP_190028_20260724_02_T1",
      "valid_land_pixels": 14292,
      "thermal_status": "usable"
    },
    {
      "id": "lst_20260725",
      "label": "25. 7. 2026.",
      "local_time": "11:39 CEST",
      "acquisition_utc": "2026-07-25T09:39:33.610036Z",
      "scene_id": "LC09_L2SP_189028_20260725_02_T1",
      "platform": "landsat-9",
      "valid_land_fraction": 0.295661,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC09_L2SP_189028_20260725_02_T1",
      "valid_land_pixels": 188610,
      "thermal_status": "usable"
    },
    {
      "id": "lst_20260801",
      "label": "1. 8. 2026.",
      "local_time": "11:45 CEST",
      "acquisition_utc": "2026-08-01T09:45:47.663131Z",
      "scene_id": "LC09_L2SP_190028_20260801_02_T1",
      "platform": "landsat-9",
      "valid_land_fraction": 0.918422,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC09_L2SP_190028_20260801_02_T1",
      "valid_land_pixels": 585886,
      "thermal_status": "usable"
    },
    {
      "id": "lst_20260802",
      "label": "2. 8. 2026.",
      "local_time": "11:39 CEST",
      "acquisition_utc": "2026-08-02T09:39:27.142602Z",
      "scene_id": "LC08_L2SP_189028_20260802_02_T1",
      "platform": "landsat-8",
      "valid_land_fraction": 0.915406,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC08_L2SP_189028_20260802_02_T1",
      "valid_land_pixels": 583962,
      "thermal_status": "usable"
    },
    {
      "id": "lst_20260809",
      "label": "9. 8. 2026.",
      "local_time": "11:45 CEST",
      "acquisition_utc": "2026-08-09T09:45:39.838737Z",
      "scene_id": "LC08_L2SP_190028_20260809_02_T1",
      "platform": "landsat-8",
      "valid_land_fraction": 0.918477,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC08_L2SP_190028_20260809_02_T1",
      "valid_land_pixels": 585921,
      "thermal_status": "usable"
    },
    {
      "id": "lst_20260810",
      "label": "10. 8. 2026.",
      "local_time": "11:39 CEST",
      "acquisition_utc": "2026-08-10T09:39:38.338582Z",
      "scene_id": "LC09_L2SP_189028_20260810_02_T1",
      "platform": "landsat-9",
      "valid_land_fraction": 0.90832,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC09_L2SP_189028_20260810_02_T1",
      "valid_land_pixels": 579442,
      "thermal_status": "usable"
    },
    {
      "id": "lst_20260817",
      "label": "17. 8. 2026.",
      "local_time": "11:45 CEST",
      "acquisition_utc": "2026-08-17T09:45:49.037308Z",
      "scene_id": "LC09_L2SP_190028_20260817_02_T1",
      "platform": "landsat-9",
      "valid_land_fraction": 0.0,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC09_L2SP_190028_20260817_02_T1",
      "valid_land_pixels": 0,
      "thermal_status": "no_valid_land_LST"
    },
    {
      "id": "lst_20260818",
      "label": "18. 8. 2026.",
      "local_time": "11:39 CEST",
      "acquisition_utc": "2026-08-18T09:39:33.420223Z",
      "scene_id": "LC08_L2SP_189028_20260818_02_T1",
      "platform": "landsat-8",
      "valid_land_fraction": 0.468665,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC08_L2SP_189028_20260818_02_T1",
      "valid_land_pixels": 298974,
      "thermal_status": "usable"
    },
    {
      "id": "lst_20260825",
      "label": "25. 8. 2026.",
      "local_time": "11:45 CEST",
      "acquisition_utc": "2026-08-25T09:45:47.646230Z",
      "scene_id": "LC08_L2SP_190028_20260825_02_T1",
      "platform": "landsat-8",
      "valid_land_fraction": 0.699737,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC08_L2SP_190028_20260825_02_T1",
      "valid_land_pixels": 446381,
      "thermal_status": "usable"
    },
    {
      "id": "lst_20260826",
      "label": "26. 8. 2026.",
      "local_time": "11:39 CEST",
      "acquisition_utc": "2026-08-26T09:39:41.560059Z",
      "scene_id": "LC09_L2SP_189028_20260826_02_T1",
      "platform": "landsat-9",
      "valid_land_fraction": 0.293643,
      "catalog": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC09_L2SP_189028_20260826_02_T1",
      "valid_land_pixels": 187323,
      "thermal_status": "usable"
    }
  ],
  "grid": {
    "crs": "EPSG:32633",
    "resolution_m": 30,
    "nx": 1366,
    "ny": 1463,
    "bounds": [
      558075,
      5049855,
      599055,
      5093745
    ],
    "bbox_wgs84": [
      15.75,
      45.6,
      16.27,
      45.99
    ],
    "transform": [
      30.0,
      0.0,
      558075.0,
      0.0,
      -30.0,
      5093745.0
    ],
    "period": "2026-06-01T00:00:00Z/2026-08-31T23:59:59Z"
  },
  "display_bounds_3857": [
    1752680,
    5715680,
    1812200,
    5779520
  ],
  "thermal_native_resolution_m_approx": 100,
  "minimum_observations": 4,
  "minimum_month_coverage": "At least one valid observation in each of June, July and August; median of all valid observations, not an equally weighted monthly mean.",
  "qa": {
    "pixel_exclude_bits": [
      0,
      1,
      2,
      3,
      4,
      5
    ],
    "cloud_shadow_snow_and_cirrus_confidence": "Confidence codes 2 and 3 excluded. Cloud code 2 means medium; code 2 is reserved for shadow/snow/cirrus. High code 3 excluded for all.",
    "radiometric_saturation": "QA_RADSAT must be zero",
    "surface_temperature_uncertainty_max_K": 3,
    "cloud_distance_min_m": 300,
    "surface_temperature_scale": "DN * 0.00341802 + 149 - 273.15 °C",
    "reflectance_scale": "DN * 0.0000275 - 0.2",
    "ndvi": "(NIR - red) / (NIR + red), high aerosol excluded; minimum 4 dates and each summer month"
  },
  "water": "Union of official water polygons and water class on at least half of >=4 clear QA_PIXEL observations. Land LST omits official water polygons + 50m buffer; satellite water uses conservative 71.22m cell-centre distance. NDVI omits water itself.",
  "binary_format": {
    "order": "row-major, top to bottom, left to right",
    "dtype": "little-endian int16",
    "nodata": -32768,
    "temperature_divisor": 100,
    "NDVI_divisor": 10000,
    "mask": "uint8: 0 outside city, 1 eligible land, 2 water mixing buffer, 3 water",
    "count": "uint8 valid LST dates before composite threshold"
  },
  "display": "Nearest-neighbour reprojection to Web Mercator only for display. No smoothing or filling of data gaps. LST colors clip at 25–50°C (labelled ≤25/≥50); NDVI colors cover 0–1 (labelled ≤0/1). Numeric values are unchanged.",
  "readout": "Median of cell centres inside a 250m UTM circle. Center must lie inside city raster mask; >=50% of non-water city cells must be valid. The fraction of the full circle inside city is shown separately. Water-buffer cells count as missing land for LST. NDVI uses its own coverage and seasonal minimum rule; thermal counts never describe NDVI.",
  "coverage": {
    "city_pixels": 712141,
    "city_grid_area_km2": 640.927,
    "water_pixels": 7644,
    "mixing_buffer_pixels": 66570,
    "eligible_land_pixels": 637927,
    "valid_median_pixels": 526955,
    "valid_fraction_of_eligible_land": 0.82604,
    "valid_ndvi_pixels": 686541,
    "land_pixels": 704497,
    "water_buffer_pixels": 66570,
    "LST_valid_fraction_of_nonwater_city": 0.747988,
    "NDVI_valid_fraction_of_nonwater_city": 0.974512
  },
  "limitations": [
    "Clear-sky daytime sampling only; not air temperature, a daily mean or long-term climate.",
    "Thermal sensor detail is about 100m, resampled by USGS to 30m; no separate roof or building measurements.",
    "Observation dates/counts vary spatially. Summer composites can have temporal sampling bias.",
    "Cloud/emissivity artifacts can remain after QA; no independent local ground-temperature validation.",
    "ST_QA is a product uncertainty estimate, not proof of local absolute accuracy.",
    "No private Drive screenshots or historical summary figures have been treated as georeferenced numeric rasters.",
    "Landsat ST may have persistent ASTER GED gaps and blocky/emissivity-adjustment artifacts. QA and coverage are not a guarantee of local accuracy."
  ],
  "last_reviewed_utc": "2026-10-10",
  "visualization": {
    "LST": {
      "range": [
        25,
        50
      ],
      "endpoints": [
        "≤25",
        "≥50"
      ],
      "numbers_not_clipped": true
    },
    "NDVI": {
      "range": [
        0,
        1
      ],
      "colors": [
        "#c6b68e",
        "#e1dfb0",
        "#aec48f",
        "#6fa478",
        "#347b60",
        "#0e493e"
      ],
      "stops": [
        0,
        0.2,
        0.4,
        0.6,
        0.8,
        1
      ],
      "endpoints": [
        "≤0",
        "1.0"
      ],
      "numbers_not_clipped": true
    },
    "opacity_note": "At 50% the colors blend with imagery; use 100% for comparison to the legend. 3D lighting can still affect perceived colors; numerical readout is authoritative."
  },
  "sampling_audit": {
    "daily_rasters": 19,
    "dates_with_valid_land_LST": 15,
    "valid_summer_pixels": 526955,
    "count_matches_daily_validity": true,
    "summer_admission_matches_min4_each_month": true,
    "median_reconstruction_max_difference_C": 0.005003662109373863,
    "difference_is_quantization": "per-date arrays and final median independently rounded to 0.01°C",
    "monthly_valid_observations_on_summer_pixels": [
      1338709,
      686036,
      2971514
    ],
    "monthly_shares_pct": [
      26.7942,
      13.731,
      59.4748
    ],
    "summer_pixels_with_single_July_observation_pct": 70.0477,
    "sensitivity_to_equal_month_weight": {
      "note": "Diagnostic median of 3 monthly medians, not a replacement product. Difference does not establish which estimate is physically more accurate.",
      "pixels_difference_gt1C_pct": 16.9749,
      "pixels_difference_gt2C_pct": 2.9412
    }
  }
}