{
  "project_id": "kuroshio",
  "revision": 4,
  "phase": "P3",
  "as_of": "2026-09-29",
  "claim": "長く続いた黒潮の大蛇行は、どのような流路へ変わったのか。",
  "scope": "Copernicus Marine GLORYS12、2017年8月〜2025年8月、月平均・表層0.494m。東経127〜146度／北緯26〜38度。元の1/12度格子から描画用に1/6度間隔で抽出。速度成分は0.04m/s刻み、最大丸め誤差0.02m/sで配信。原本の数値は保持。",
  "limitations": "粒子は月平均ベクトル場の表示上の補間に沿って移動する。移動速度・寿命は演出上の設定であり、実測した水粒子の軌跡ではない。色尺度は0〜1.5m/sで上端を飽和表示。終息時期は気象庁の2025年4月の判断を採用し、月平均から終息日を特定しない。",
  "sources": [
    {
      "id": 1,
      "title": "気象庁 — 黒潮大蛇行の終息について（2025年8月29日）",
      "url": "https://www.jma.go.jp/jma/press/2508/29a/20250829_end_of_kuroshioLM.html"
    },
    {
      "id": 2,
      "title": "Copernicus Marine — GLORYS12 / GLOBAL_MULTIYEAR_PHY_001_030",
      "url": "https://data.marine.copernicus.eu/product/GLOBAL_MULTIYEAR_PHY_001_030/description"
    },
    {
      "id": 3,
      "title": "気象庁 — 黒潮流路の長期変動",
      "url": "https://www.data.jma.go.jp/kaiyou/data/shindan/b_2/kuroshio_stream/kuroshio_stream.html"
    },
    {
      "id": 4,
      "title": "Copernicus Marine — licence",
      "url": "https://marine.copernicus.eu/user-corner/service-commitments-and-licence"
    },
    {
      "id": 5,
      "title": "Natural Earth — public-domain geography",
      "url": "https://www.naturalearthdata.com/about/terms-of-use/"
    }
  ],
  "display": {
    "size_main": [
      1080,
      1350
    ],
    "projection": "regional equirectangular, corrected aspect",
    "dates": [
      "2017-08",
      "2017-09",
      "2017-10",
      "2017-11",
      "2017-12",
      "2018-01",
      "2018-02",
      "2018-03",
      "2018-04",
      "2018-05",
      "2018-06",
      "2018-07",
      "2018-08",
      "2018-09",
      "2018-10",
      "2018-11",
      "2018-12",
      "2019-01",
      "2019-02",
      "2019-03",
      "2019-04",
      "2019-05",
      "2019-06",
      "2019-07",
      "2019-08",
      "2019-09",
      "2019-10",
      "2019-11",
      "2019-12",
      "2020-01",
      "2020-02",
      "2020-03",
      "2020-04",
      "2020-05",
      "2020-06",
      "2020-07",
      "2020-08",
      "2020-09",
      "2020-10",
      "2020-11",
      "2020-12",
      "2021-01",
      "2021-02",
      "2021-03",
      "2021-04",
      "2021-05",
      "2021-06",
      "2021-07",
      "2021-08",
      "2021-09",
      "2021-10",
      "2021-11",
      "2021-12",
      "2022-01",
      "2022-02",
      "2022-03",
      "2022-04",
      "2022-05",
      "2022-06",
      "2022-07",
      "2022-08",
      "2022-09",
      "2022-10",
      "2022-11",
      "2022-12",
      "2023-01",
      "2023-02",
      "2023-03",
      "2023-04",
      "2023-05",
      "2023-06",
      "2023-07",
      "2023-08",
      "2023-09",
      "2023-10",
      "2023-11",
      "2023-12",
      "2024-01",
      "2024-02",
      "2024-03",
      "2024-04",
      "2024-05",
      "2024-06",
      "2024-07",
      "2024-08",
      "2024-09",
      "2024-10",
      "2024-11",
      "2024-12",
      "2025-01",
      "2025-02",
      "2025-03",
      "2025-04",
      "2025-05",
      "2025-06",
      "2025-07",
      "2025-08"
    ],
    "same_scale_between_frames": true,
    "temporal_interpolation": "linear monthly vector interpolation; accelerated visual particle advection",
    "style": {
      "land": "#0d222d",
      "coast": "#45606a",
      "coast_width": 0.5
    }
  },
  "production": {
    "source_renderer": "explorer/index.html",
    "raw_data": "work/p1-20260929/raw",
    "source_reuse": [
      "Data Scape / Natural Earth coast geometry",
      "SORAH polar composition and typefaces"
    ],
    "review": "included in the same review bundle",
    "sorah_io_production": false
  },
  "validation": "data/p1-r2-data-validation.json",
  "design": {
    "system": "1.7.0",
    "foundations": "6.4.0",
    "references": "SDS live system.json and local matching 2026-09-26 foundations; custom data palettes retained."
  },
  "current_rendering": {
    "data": "Copernicus Marine GLORYS12、2017年8月〜2025年8月、月平均・表層0.494m。東経127〜146度／北緯26〜38度。元の1/12度格子から描画用に1/6度間隔で抽出。速度成分は0.04m/s刻み、最大丸め誤差0.02m/sで配信。原本の数値は保持。",
    "limits": "粒子は月平均ベクトル場の表示上の補間に沿って移動する。移動速度・寿命は演出上の設定であり、実測した水粒子の軌跡ではない。色尺度は0〜1.5m/sで上端を飽和表示。終息時期は気象庁の2025年4月の判断を採用し、月平均から終息日を特定しない。"
  },
  "supersedes": "revision 1 rendering choices",
  "visual_revision_note": "精細で控えめな陸地に、97か月の海流を粒子で表示。2025年に時間の進行を遅くし、終息後の流れを最後に7秒保持します。粒子は実測した水の軌跡ではありません。",
  "delivery": {
    "stage": "P3",
    "audio": "silent editorial review masters",
    "formats": {
      "feed": [
        1080,
        1350
      ],
      "stories": [
        1080,
        1920
      ],
      "pinterest": [
        1080,
        1620
      ]
    },
    "timeline": "media/p3-r4/timeline.json",
    "layout": "media/p3-r4/layout.json",
    "languages": [
      "ja",
      "en"
    ],
    "public_distribution": false
  },
  "article_languages": [
    "ja",
    "en"
  ],
  "p3_verification": {
    "report": "data/p3-asset-report.json",
    "timeline": "data/p3-timeline.json",
    "layout": "data/p3-layout.json",
    "canonical_data_preserved": true,
    "new_claims_checked": "Primary providers: CPOM / ESA / IMBIE, JMA / Copernicus Marine, NOAA / AIMS. 2026-09-29."
  }
}