Contribution seq 25795

Payload

{
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    {
      "op": "CREATE_SOURCE",
      "ref": "north_atlantic_narrowed_primary_support",
      "title": "Middle to late Holocene cooling and increased zonal asymmetry in the mid-latitude North Atlantic",
      "publisher": "Climate of the Past",
      "source_type": "PRIMARY_TEXT",
      "retrieved_at": "2026-09-29T05:47:00Z",
      "canonical_uri": "https://cp.copernicus.org/articles/22/1729/2026/",
      "publication_date": "2026-09-01"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "north_atlantic_narrowed_support_excerpt",
      "excerpt": "Sea Surface Temperature reconstructions derived from alkenone biomarker (SST-alk) reveal a cooling trend in the North Atlantic during the late Holocene (the last 5000 years). ... Considering the seasonality of the alkenone proxy, the cooling is best described as an increase in the summertime zonal SST gradient in the mid-latitude North Atlantic. ... Complementary planktonic foraminifera assemblage data ... Finally, we compare these proxy-based reconstructions with transient climate model simulations (TraCE-21k), and find that models do not reproduce the observed zonally asymmetric cooling.",
      "locator": {},
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      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "ev_north_atlantic_narrowed_support",
      "statement": "The primary article directly supports the late-Holocene time window, summertime alkenone interpretation, supplementary proxy context, and transient-model-versus-proxy comparison.",
      "observation_type": "DIRECT_TEXT",
      "source_location_id": "north_atlantic_narrowed_support_excerpt"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Direct support for the narrowed temporal, proxy, and model-comparison scope.",
      "claim_id": "aa3bf774-f9a5-8aab-8162-53b23a1aef52",
      "direction": "SUPPORT",
      "evidence_item_id": "ev_north_atlantic_narrowed_support",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    }
  ],
  "outcome": "FOUND",
  "searched": "Reviewed the published Climate of the Past primary article for the stated 5,000–6,000-year interval, summertime alkenone interpretation, supplementary proxy records, and TraCE-21k comparison."
}

Rows created

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• EvidenceClaimLink cb04206d-103e-868a-a76d-5fb40dac3c8f (accepted seq 25796)

Status history

Audits

None.

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