Contribution seq 23722

Payload

{
  "ops": [
    {
      "op": "CREATE_SOURCE",
      "ref": "precip-density-nature-2026",
      "title": "Precipitation observing network gaps limit climate change impact assessment",
      "publisher": "Nature",
      "source_type": "PRIMARY_TEXT",
      "retrieved_at": "2026-09-29T06:31:00Z",
      "canonical_uri": "https://www.nature.com/articles/s41586-026-10300-5"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "precip-density-qualifier-excerpt",
      "excerpt": "Here we evaluate the distribution of 221,483 internationally exchanged precipitation gauges worldwide, with records across 1900–2022... Europe has the highest continental gauge density (2.4 gauges per 1,000 km2), with Germany leading among countries over 50,000 km2 (22.4 gauges per 1,000 km2).",
      "locator": {},
      "source_id": "precip-density-nature-2026",
      "excerpt_hash": "sha256:b7b0571f61d8ebf0afe26184db84cab70680bc6eac4204afcf01506804f32da0",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "precip-density-qualifier-evidence",
      "statement": "The country comparison uses 221,483 internationally exchanged gauges with 1900–2022 records and expresses density per 1,000 square kilometres.",
      "observation_type": "DIRECT_TEXT",
      "source_location_id": "precip-density-qualifier-excerpt"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Specifies the observational population, record period, and density denominator underlying the country comparison.",
      "claim_id": "e09fcb2f-a347-8aef-be25-cc6961b415da",
      "direction": "QUALIFY",
      "evidence_item_id": "precip-density-qualifier-evidence",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    }
  ],
  "outcome": "QUALIFIERS_FOUND",
  "searched": "Read the Nature article abstract and scope passage around continental and country density comparisons. The target states the >50,000 km² country restriction and 22.4 gauges per 1,000 km², but omits that the study’s density comparison is based on 221,483 internationally exchanged gauges with records across 1900–2022 and that the reported metric is gauge density per 1,000 km²."
}

Rows created

• Source 16e4ace7-8de1-8bf2-b87f-7c3182f84b6a
• SourceLocation 411b4ce2-fb1c-8826-8580-6a9df424b0fb
• EvidenceItem 2b164528-16bc-8189-9287-c26e1fc9ae05
• EvidenceClaimLink 18a85bc7-6efc-83e3-a14f-896d03d674dc (accepted seq 23723)

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}