{
  "schemaVersion": "climate-heat-health-sources/v1",
  "snapshot": "lancet-2025-dwd-2026-09-13",
  "sources": [
    {
      "id": "dwd-hot-days",
      "file": "regional_averages_txbs_year.txt",
      "url": "https://opendata.dwd.de/climate_environment/CDC/regional_averages_DE/annual/hot_days/regional_averages_txbs_year.txt",
      "publisher": "Deutscher Wetterdienst",
      "version": "CDC annual regional averages, retrieved 2026-09-13",
      "licence": "DWD open data; source attribution required",
      "licenceUrl": "https://www.dwd.de/EN/service/copyright/copyright_node.html",
      "bytes": 14037,
      "sha256": "3d01b4ccff174207e096ede6556b559b421d1929d1d77f11f82c40583cbe1735",
      "retrievedAt": "2026-09-13T13:51:00.818Z",
      "lastModified": "Tue, 20 Jan 2026 09:10:12 GMT",
      "used": true
    },
    {
      "id": "dwd-summer",
      "file": "regional_averages_tm_summer.txt",
      "url": "https://opendata.dwd.de/climate_environment/CDC/regional_averages_DE/seasonal/air_temperature_mean/regional_averages_tm_summer.txt",
      "publisher": "Deutscher Wetterdienst",
      "version": "CDC summer regional averages, retrieved 2026-09-13",
      "licence": "DWD open data; source attribution required",
      "licenceUrl": "https://www.dwd.de/EN/service/copyright/copyright_node.html",
      "bytes": 27253,
      "sha256": "52cd783fbeb457a4078a10084210ad830236c6cc5439074677baa44c5f2f3d85",
      "retrievedAt": "2026-09-13T13:51:00.988Z",
      "lastModified": "Wed, 02 Sep 2026 05:20:12 GMT",
      "used": true
    },
    {
      "id": "lancet-exposure",
      "file": "Indicator-1.1.1_Vulnerable_Data-Download_2025-Lancet-Countdown-Report-1.xlsx",
      "url": "https://lancetcountdown.org/wp-content/uploads/2025/10/Indicator-1.1.1_Vulnerable_Data-Download_2025-Lancet-Countdown-Report-1.xlsx",
      "publisher": "Lancet Countdown",
      "version": "2025 global report, indicator 1.1.1 vulnerable-population workbook",
      "licence": "CC BY-NC-SA 4.0",
      "licenceUrl": "https://lancetcountdown.org/use-our-data/",
      "bytes": 710882,
      "sha256": "a5b880ab56941f8a8db93b8412b47bb1d9415db8f138acf3d156445ec7b313a7",
      "retrievedAt": "2026-09-13T13:51:01.322Z",
      "lastModified": "Thu, 30 Oct 2025 07:05:42 GMT",
      "used": true
    },
    {
      "id": "lancet-mortality",
      "file": "Indicator-1.1.5_Data-Download_2025-Lancet-Countdown-Report-1.xlsx",
      "url": "https://lancetcountdown.org/wp-content/uploads/2025/10/Indicator-1.1.5_Data-Download_2025-Lancet-Countdown-Report-1.xlsx",
      "publisher": "Lancet Countdown",
      "version": "2025 global report, indicator 1.1.5 workbook; definitions require inspection",
      "licence": "CC BY-NC-SA 4.0",
      "licenceUrl": "https://lancetcountdown.org/use-our-data/",
      "bytes": 137358,
      "sha256": "f6a18bdec8434973269c095727a13a0375e78b0e674124cf8c9827ec267131e0",
      "retrievedAt": "2026-09-13T13:51:01.568Z",
      "lastModified": "Thu, 30 Oct 2025 07:05:54 GMT",
      "used": false,
      "exclusionReason": "This export contains global and regional estimates, but no country sheet or German intervals. It is not substituted for German mortality."
    }
  ],
  "transformations": [
    "Germany ISO3 DEU country rows only; actual seven-column sheet schema, not the incompatible longer guidance schema.",
    "DWD positional semicolon parsing preserves the numeric year despite the duplicate Jahr header.",
    "Exposure joins use the common complete years 1980-2024. DWD 2025 and summer 2026 remain climate-only context.",
    "Within-group index: total person-days divided by the 2001-2010 group mean, multiplied by 100. This is not a per-person rate.",
    "Only 13 individually supplied state series are used; combination series do not stand in for missing city states."
  ],
  "rights": "Lancet-derived exposure data and charts: CC BY-NC-SA 4.0, credited to Lancet Countdown, Federico Tartarini and Ollie Jay. Changes: Germany subset, year alignment, arithmetic indices and visual encoding. No endorsement implied. Commercial reuse requires separate permission. DWD series retain DWD attribution."
}