{
  "version": "1.0.0",
  "retrieved": "2026-10-21",
  "analysts": "Louisiana Deep Sea Fishing editorial analysis; independent review pending",
  "rights": "NOAA public environmental observations and factual numerical extracts with attribution. Government observations are redistributed with source links and retrieval hashes. Journal manuscript retained for research; no source figure or full publisher text republished. No endorsement implied.",
  "service_discovery": [
    "https://www.ncei.noaa.gov/products/gulf-america-hypoxia-watch",
    "https://www.arcgis.com/sharing/rest/content/items/953ab968df174cf3bf7a6e8cc7fe58d7/data?f=json",
    "https://noaa.maps.arcgis.com/sharing/rest/content/items/a4761ee439d84b8785223565fbc00b7d/data?f=json",
    "https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/Hypoxia/FeatureServer/1?f=pjson"
  ],
  "sources": [
    {
      "file": "inport-2019.html",
      "url": "https://www.fisheries.noaa.gov/inport/item/67974",
      "returncode": 0,
      "error": "",
      "sha256": "4aacb29c5ade86ec270800de870d6fb0a37d962a003f46b628d0e0405f8b944d"
    },
    {
      "file": "noaa-2026-measured.html",
      "url": "https://www.noaa.gov/news-release/noaa-and-partners-find-smaller-than-anticipated-hypoxic-zone-in-gulf-of-america",
      "returncode": 0,
      "error": "",
      "sha256": "4fe180a2747eea3b58bdce8a1bef5fa29819d8bc03a86980ddbf16d9902f05b6"
    },
    {
      "file": "noaa-2026-forecast.html",
      "url": "https://oceanservice.noaa.gov/news/jun26/summer-dead-zone.html",
      "returncode": 0,
      "error": "",
      "sha256": "a411e899fad002d0265e64c485dff29e817108e636772fa4c4bfbdfb356d64a4"
    },
    {
      "file": "noaa-2026-forecast.pdf",
      "url": "https://cdn.coastalscience.noaa.gov/page-attachments/Forecast/2026GulfofAmericaHypoxiaOnePager.pdf",
      "returncode": 0,
      "error": "",
      "sha256": "3fb09c89e21f5090abd84504a556659091260e01b9dd509c6a2ec7d4e000e4e1"
    },
    {
      "file": "noaa-2025-forecast.pdf",
      "url": "https://cdn.coastalscience.noaa.gov/page-attachments/Forecast/2025GulfofAmericaHypoxiaOnePager.pdf",
      "returncode": 0,
      "error": "",
      "sha256": "70b8213de69b14b9b309c834f57a7f76c1f7502e3db32605e385737159ae563c"
    },
    {
      "file": "noaa-2025-measured.html",
      "url": "https://www.noaa.gov/news-release/gulf-of-america-dead-zone-below-average-scientists-find",
      "returncode": 0,
      "error": "",
      "sha256": "390a6d20cb5bb8ae5ab09f89b9d9f6ef46d5693019589ebd757261bff08303ec"
    },
    {
      "file": "lumcon-shelfwide.html",
      "url": "https://gulfhypoxia.net/research/shelfwide-cruises/",
      "returncode": 0,
      "error": "",
      "sha256": "dfabaa65dd2561fba4c5272d6818908512b60962b6cd88e19010fd8a76b13c29"
    },
    {
      "file": "noaa-2019-hypoxia-review.pdf",
      "url": "https://repository.library.noaa.gov/view/noaa/58477/noaa_58477_DS1.pdf",
      "returncode": 0,
      "error": "",
      "sha256": "4b72ee2f249493f7106bd9e565affbb6ed8ac84cb260d417a3d204055b3ed40b"
    },
    {
      "file": "ctd-2019.tar.gz",
      "url": "https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/accession/download/193188",
      "returncode": 0,
      "error": "",
      "actual_saved_file": "ctd-download-redirect.html",
      "usable": false,
      "note": "HTTP success but returned HTML, not a gzip archive; no CTD profiles acquired."
    },
    {
      "file": "noaa-2024-measured.html",
      "url": "https://www.noaa.gov/news-release/gulf-of-mexico-dead-zone-larger-than-average-scientists-find",
      "returncode": 0,
      "error": "",
      "sha256": "d9d40eefc5e1ac113fba2036f0d3e410b4c68ad006a5ca23254cf3f46d7679d9"
    },
    {
      "file": "noaa-2023-measured.html",
      "url": "https://www.noaa.gov/news-release/noaa-and-partners-announce-below-average-dead-zone-measured-in-gulf-of-mexico",
      "returncode": 0,
      "error": "",
      "sha256": "9e19b2724cf3164938e227be94442ee842d5a1b765dcd8a78d0ecd8baba280fc"
    },
    {
      "file": "noaa-2022-measured.html",
      "url": "https://www.noaa.gov/news-release/below-average-gulf-of-mexico-dead-zone-measured",
      "returncode": 0,
      "error": "",
      "sha256": "22d0a533c324db77f9a7d6c913cbcde011437f97f3797c8d99d63053340b2478"
    },
    {
      "file": "cruise-2019.pdf",
      "url": "https://seamap.gsmfc.org/CruiseReports/2019/NMFS%202019%20Summer%20Groundfish.pdf",
      "returncode": 56,
      "error": "curl: (56) The requested URL returned error: 404\n"
    },
    {
      "file": "ctd-directory.html",
      "url": "https://www.ncei.noaa.gov/archive/accession/0193188/1.1/data/0-data/R2_0332CTDs/",
      "returncode": 0,
      "error": "",
      "sha256": "3e0e4ccda0f8235fca7936824f11d64b89e777f8ee2260599bd5c51aa2f23d49",
      "usable": false,
      "note": "HTML prd Error page, no CNV files."
    },
    {
      "file": "noaa-2021-measured.html",
      "url": "https://www.noaa.gov/news-release/larger-than-average-gulf-of-mexico-dead-zone-measured",
      "returncode": 0,
      "error": "",
      "sha256": "f73acb136c7f3ee3aa61905d54fec3e46f05c1a38e215740c786bd1d904adb71"
    },
    {
      "file": "noaa-2024-forecast.pdf",
      "url": "https://cdn.coastalscience.noaa.gov/page-attachments/Forecast/2024HypoxiaOnePager.pdf",
      "returncode": 0,
      "error": "",
      "sha256": "aa5f73967bb6da46b49351dec84f33a2c90736d024a746402b2f9f8c7493df64"
    },
    {
      "file": "noaa-2023-forecast.pdf",
      "url": "https://cdn.coastalscience.noaa.gov/page-attachments/Forecast/2023HypoxiaOnePager.pdf",
      "returncode": 0,
      "error": "",
      "sha256": "5505d8d6866a929776c6b84a791ab54d215f1c36c9358b40bce314b5a500dd22"
    },
    {
      "file": "noaa-2022-forecast.pdf",
      "url": "https://cdn.coastalscience.noaa.gov/page-attachments/news/2022_Hypoxia_OnePager.pdf",
      "returncode": 0,
      "error": "",
      "sha256": "0d25eb7692751f0779e9a513b07fe3d706f20c925d7eb62c648688c2cc49d19e"
    },
    {
      "file": "noaa-2021-forecast.pdf",
      "url": "https://cdn.coastalscience.noaa.gov/page-attachments/news/2021_Hypoxia_OnePager.pdf",
      "returncode": 0,
      "error": "",
      "sha256": "8dbe3dd8734489c871f9447cd36b7464c12f4c678f5318ae9e0dadcc283c7d58"
    },
    {
      "file": "2026-Hypoxia-Stations.zip",
      "url": "https://www.ncei.noaa.gov/waf/hypoxia-waf/documents/hypoxia/data/2026-Hypoxia-Stations.zip",
      "returncode": 0,
      "error": "",
      "sha256": "a0853acb8c2d40026609a0073188111c17846d02d3b7dd2e10a2d40bc2d16156"
    },
    {
      "file": "hypoxia-watch.html",
      "url": "https://www.ncei.noaa.gov/products/gulf-america-hypoxia-watch",
      "returncode": 0,
      "error": "",
      "sha256": "cad6c2f9dcbe2e2e0f29f74ee71336e1d466a2eba6af04d8303bd7fe73b55b3b"
    },
    {
      "file": "stations-2019.json",
      "url": "https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/Hypoxia/FeatureServer/1/query?where=CruiseYear%3D2019+AND+Season%3D%27Summer%27&outFields=%2A&returnGeometry=false&orderByFields=FID&resultRecordCount=2000&f=json",
      "sha256": "77bb22ba3a71bfe6c4c92d76db7b9785c0b8dbbeb1960b36873be63e3e30ba5d",
      "role": "Historical oxygen observations"
    },
    {
      "file": "stations-2026.json",
      "url": "https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/Hypoxia/FeatureServer/1/query?where=CruiseYear%3D2026+AND+Season%3D%27Summer%27&outFields=%2A&returnGeometry=false&orderByFields=FID&resultRecordCount=2000&f=json",
      "sha256": "4841ac01f545d54f10c5e466f4b051e6206c1ebf5637dd72176daf06b1e4b53a",
      "role": "Null oxygen-field availability audit; not used as zero measurements"
    },
    {
      "file": "2019_CTD_BottomDissolvedOxygen.csv",
      "url": "https://www.ncei.noaa.gov/waf/hypoxia-waf/documents/hypoxia/csv/2019_CTD_BottomDissolvedOxygen.csv",
      "sha256": "cba4d686eb5c6bdecbc9e899ff328f2efa2989a4c17fc443e0900515728e32b3",
      "role": "Source CSV independently checked against all160API rows"
    },
    {
      "file": "glaspie-2019.pdf",
      "url": "https://repository.library.noaa.gov/view/noaa/25959",
      "sha256": "e23b73937ff50f539fd35d4dabd7708b784227feffaab31d9835526d5e761b0b",
      "role": "Accepted manuscript methods, results, discussion, tables and supplement; key passages visually audited. Original paper figures/PDF not redistributed on public site."
    }
  ],
  "public_sha256": {
    "evidence.json": "6b1ae91e7580d1f85f81dc90149d593d0aa1ee71caaab632e28894c519f9d477",
    "forecast-versus-survey.svg": "2cd599170fff24a393933a60065cf0c19c30b976e54e646a5b4d3ed6e25b3fad",
    "reproduce.mjs": "6d0ba8b562daf99d6b168de33857df09f89c6a116e12761b375b7239b36f37d6",
    "oxygen-footprint.svg": "d22df5797400603f8a46fb7c2f7b80e15b23af29b1dfe51808a9d778aa144e4f",
    "regional-stations.csv": "2301a241f7705e4554b22bfae0b55dff7b19c9d54a721dc0203e1bb3d61d3a63",
    "stations-2026.json": "4841ac01f545d54f10c5e466f4b051e6206c1ebf5637dd72176daf06b1e4b53a",
    "oxygen-2019.csv": "cba4d686eb5c6bdecbc9e899ff328f2efa2989a4c17fc443e0900515728e32b3",
    "methods.txt": "26d75ace0b7ecee911ddeb67f2a9dc9e413f06dea127ba68059f6767a93c2e01",
    "stations-2019.json": "77bb22ba3a71bfe6c4c92d76db7b9785c0b8dbbeb1960b36873be63e3e30ba5d",
    "fish-breakpoints.svg": "bf726ad4c499eb6070e2c07f391cf0364dce9e4637bdae6667f7b2c24a1f7329",
    "annual-comparison.csv": "7090ad5b4f18b2062a93a74964b08faaaffb15fc44e5b99ee4aa6d006383226b",
    "protocol.json": "66b3c4b5fb9ddbe780fd07899bc396642db50075b7c9e26bab1dfb2d0056e396",
    "analysis.json": "98f350febf055fc6ce73afb72dcfdb1e214c4aee859bce5ab51d3ca5fd6bfe31",
    "oxygen-stations.csv": "0e520edde5dfcca5a439073bc198df7cf56e779f6f3726ab4f0f02d8c73a8d73",
    "regional-depth-summary.csv": "5a2f575b68c73dd77dafc0d41dcd4f5cefa7439b3eca1654d7059213bf2279a8"
  }
}