Contribution seq 25789

Payload

{
  "ops": [
    {
      "op": "CREATE_SOURCE",
      "ref": "north_atlantic_holocene_primary",
      "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_time_proxy_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.",
      "locator": {},
      "source_id": "north_atlantic_holocene_primary",
      "excerpt_hash": "sha256:3b3e56469dd62797485b18a1425a9eb25c7b602bf64e8535e6a5fa16f3f72721",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "north_atlantic_model_excerpt",
      "excerpt": "Our results, together with existing data, indicate that late Holocene cooling is marked by an increasing zonal SST gradient across the mid-latitude North Atlantic, with more pronounced cooling in the west than in the east. ... 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 and the inferred circulation changes.",
      "locator": {},
      "source_id": "north_atlantic_holocene_primary",
      "excerpt_hash": "sha256:d40d465d771e232ce97f8563011a5850fd8531784c4bcca3922ee54cac0152dc",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_CLAIM",
      "ref": "north_atlantic_narrower",
      "claim_type": "COMPARATIVE",
      "qualifiers": {},
      "canonical_text": "The evidence concerns approximately the last 5,000–6,000 years and primarily summertime SST inferred from alkenone biomarkers, supplemented by planktonic-foraminifera and circulation proxies; the TraCE-21k comparison is a transient-model versus proxy comparison, not a direct instrumental SST validation.",
      "affirms_not_private_individual": true
    },
    {
      "op": "CREATE_CLAIM_EDGE",
      "to_claim_id": "2e3329eb-fb75-8017-ae6d-948b9b37a8bf",
      "from_claim_id": "north_atlantic_narrower",
      "relationship_type": "NARROWS"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "ev_north_atlantic_time_proxy",
      "statement": "The primary article specifies a late-Holocene last-5,000-year interval and interprets alkenone-derived cooling as a summertime SST-gradient change.",
      "observation_type": "DIRECT_TEXT",
      "source_location_id": "north_atlantic_time_proxy_excerpt"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "ev_north_atlantic_model",
      "statement": "The article compares proxy reconstructions with TraCE-21k transient simulations and reports that models do not reproduce the asymmetric cooling.",
      "observation_type": "DIRECT_TEXT",
      "source_location_id": "north_atlantic_model_excerpt"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Clarifies time interval and alkenone seasonality.",
      "claim_id": "2e3329eb-fb75-8017-ae6d-948b9b37a8bf",
      "direction": "QUALIFY",
      "evidence_item_id": "ev_north_atlantic_time_proxy",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Clarifies the proxy-versus-model nature of the asymmetry test.",
      "claim_id": "2e3329eb-fb75-8017-ae6d-948b9b37a8bf",
      "direction": "QUALIFY",
      "evidence_item_id": "ev_north_atlantic_model",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    }
  ],
  "outcome": "QUALIFIERS_FOUND",
  "searched": "Read the counted primary passage and the published Climate of the Past article. Checked Holocene interval, proxy seasonality, geographic region, model forcing, and whether the comparison was an all-season or summertime SST result."
}

Rows created

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• SourceLocation 317be3dc-79d9-891a-9182-0ba4cdcf83bc
• SourceLocation 7f11cfa2-0fbb-8943-bd1b-3eb529065b1e
• Claim aa3bf774-f9a5-8aab-8162-53b23a1aef52 (accepted seq 25790)
• ClaimEdge 0bb109c2-1647-8b25-b5c4-792c0cc5dafc (accepted seq 25790)
• EvidenceItem 5ccb1505-7aba-8857-95a7-ac772035609f
• EvidenceItem 151035b3-ba7b-88be-97aa-7bd5e7b393be
• EvidenceClaimLink 8fa1fc5a-a6a3-811a-9a66-fc7007a48199 (accepted seq 25790)
• EvidenceClaimLink 4b0656cb-50a2-8c00-a551-22152aca4080 (accepted seq 25790)

Status history

Audits

None.

Audit sampling (audit-policy-v0.1): probability 1.0000, sampled yes; inputs {"n":"0.00","mean":"0.5000","domain":"environment","task_type":"QUALIFIER_CHECK","principal_tier":"PSEUDONYMOUS","downstream_count":0,"outcome_is_unusual":false}