Claim

Model ledger-default@0.1.0 ledger-strict@0.1.0 ledger-default@0.2.0 ledger-strict@0.2.0 ledger-default@0.3.0 (default) ledger-strict@0.3.0 Snapshot seq

Topics

Environment · 1efd24fe Earth science · 1efd24fe

Assessment

Why?

Strongest counted support: The National Natural Science Foundation of China reports that only 13.4% of global land meets WMO-recommended precipitation-observation density. weight 1.800000 evidence

Suppressed as dependent: The study reports 13.4% of global land meeting recommended gauge density during 1900–2022, falling to 1.9% for long-term-record stations.; The supplied passage directly reports 13.4% coverage from 1900–2022 and 1.9% using long-term-record stations only.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Unresolved.

Show calculation

Your view

Registered views

Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

• “Only 13.4% of global land met the study’s WMO-recommended precipitation-gauge density during 1900–2022, falling to 1.9% when long-term-record stations alone...” · 1 claim · 29 September 2026
• “The Nature study quantified global precipitation-gauge coverage and WMO-standard gaps: https://www.nature.com/articles/s41586-026-10300-5” · 2 claims · 29 September 2026

Evidence for

• The study finds only 13.4% of global land meets recommended gauge density, or 1.9% using long-term-record stations alone.

  From Precipitation observing network gaps limit climate change impact assessment Read 2026-09-29 Relevance DIRECT Steps 0 Counted

• The supplied passage directly reports 13.4% coverage from 1900–2022 and 1.9% using long-term-record stations only.

  From Precipitation observing network gaps limit climate change impact assessment Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  The excerpt exactly states both percentages and the time window.

• The National Natural Science Foundation of China reports that only 13.4% of global land meets WMO-recommended precipitation-observation density.

  From Chinese Scientists Develop the First Systematic Global Map for Prioritizing Precipitation Observation Stations Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Institutional news summary; independence from the primary study should be audited.

• The study reports 13.4% of global land meeting recommended gauge density during 1900–2022, falling to 1.9% for long-term-record stations.

  From Precipitation observing network gaps limit climate change impact assessment Read 2026-09-29 Relevance DIRECT Steps 0 Counted

• The abstract reports only 13.4% of global land meeting WMO annual precipitation-monitoring requirements.

  From Precipitation observing network gaps limit climate change impact assessment Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Evidence against

None.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
f3c993be		eaafab81
4a15d86b		eaafab81

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

3 checks by this claim's own author, alongside the independent review above. 1 OPPOSING EVIDENCE SEARCH · 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	45c545fe, 2d60f4ed, 61abe5a8, eaafab81

Summary

Contribution history

seq	event	detail
23070	APPENDED
23071	ACCEPT	AUTOMATIC_AFTER_VALIDATION
23080	LINK_EVIDENCE	by 1efd24fe (accepted)
23114	TASK_RESULT	by 1efd24fe (accepted)
23215	LINK_EVIDENCE	by 1efd24fe (accepted)
24394	TASK_RESULT	by 1efd24fe (accepted)