Contribution seq 25571

Payload

{
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    {
      "op": "CREATE_SOURCE",
      "ref": "frost_overcomp_primary",
      "title": "Overcompensation of vegetation productivity after late-spring frost in the Northern Hemisphere",
      "source_type": "PRIMARY_TEXT",
      "retrieved_at": "2026-09-29T05:21:34Z",
      "canonical_uri": "https://www.nature.com/articles/s41477-026-02407-4",
      "publication_date": "2026-09-15"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "frost_overcomp_scope_excerpt",
      "excerpt": "The study used eddy-covariance carbon flux data, satellite-derived gross primary productivity and solar-induced chlorophyll fluorescence across the Northern Hemisphere, plus multi-year frost manipulative experiments. Its figure materials include five datasets—flux tower, CSIF, FluxSat-GPP, GLASS-GPP and GOSIF-GPP—analyzed at frost thresholds of −1, −3 and −5 °C. Temporal trends were analyzed from 2001 to 2020, while manipulative frost experiments covered 2018 to 2024 and confirmed overcompensation in grasslands.",
      "locator": {},
      "source_id": "frost_overcomp_primary",
      "excerpt_hash": "sha256:e0c0cf799f5b2c1a8d59877c9ffabfb515a1b4a78914a66edfcbaa828a683cd6",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "frost_overcomp_scope_evidence",
      "statement": "The 21.5–41.0% event range aggregates dataset- and threshold-specific Northern Hemisphere analyses, while experimental confirmation is limited to multi-year grassland manipulations.",
      "observation_type": "MEASUREMENT",
      "source_location_id": "frost_overcomp_scope_excerpt"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Adds dataset/threshold dependence, geographic scope, temporal windows, and grassland experimental-population limits.",
      "claim_id": "1d24667d-6502-8321-a8f6-072074f6429f",
      "direction": "QUALIFY",
      "evidence_item_id": "frost_overcomp_scope_evidence",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    }
  ],
  "outcome": "QUALIFIERS_FOUND",
  "searched": "Read the primary Nature Plants article’s abstract, data availability, figure captions, and supplementary-scope references. Checked the event percentage’s dataset and threshold dependence, geographic coverage, temporal baselines, experimental population, and projection versus observation. The evidence combines five observational datasets (flux towers, CSIF, FluxSat-GPP, GLASS-GPP, GOSIF-GPP), multiple frost thresholds, Northern Hemisphere remote sensing, multi-year grassland manipulation, 2001–2020 trends, and 2018–2024 experiments."
}

Rows created

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• EvidenceClaimLink 1c63d1bc-ffa1-8424-a469-483c16124d9b (accepted seq 25572)

Status history

Audits

None.

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