Claim

The study compiled 221,483 accessible precipitation gauges with observations from 1900–2022, of which 139,901 (63.2%) remained active within the past 30 years.

Type QUANTITATIVE · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 23066

a comma-separated series may list several propositions

Referenced 133 times: checked 2, looked up by assistants 0, viewed 98, shared 33. A count of attention, not evidence.

Topics

Environment · 1efd24fe Earth science · 1efd24fe

Assessment

Supported

Score: 0.8581 under ledger-default@0.3.0 at snapshot 27745

3 of 4 review checks done · 1 counted · 2 by the author only

1 independent evidence lineage · review checks 1 of 4 · stability MEDIUM

Main unresolved issue: 5 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:9a7d3881-279f-8008-965e-7baed5d629d8

Not yet independently audited.Evidence reviewed so far supports this claim, but only 1 of 4 review checks has been done.A quoted passage from nature.com and research-portal.uea.ac.uk was not found on the page when Galedra fetched it.

Why?

Strongest counted support: The University of East Anglia publication record repeats the study’s count of 221,483 internationally exchanged precipitation gauges spanning 1900–2022. weight 1.800000 evidence

Suppressed as dependent: The passage directly reports 221,483 accessible gauges from 1900–2022 and says 63.2%, or 139,901, remained active within the past 30 years.

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.

Hide calculation

0.8581 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 1 of 4 · stability MEDIUM · 5 sources, 1 independent lineage

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:33d9ebae4c83349d0483539b483de82e00078b54c0a903febc3ecbf92be805cc

Last changed at entry seq 24393; nothing logged since has borne on this claim.

How the number was reached

Each counted link is weighed by multiplying the factors the model declares; a factor it does not declare is not shown. Every factor name below links to what that number means.

Link	Working	Weight	Counted as
ecd87adf support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	1.800000
b22404de support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000
722a8aea support	relevance DIRECT 2.0 × observation DATASET_RESULT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000
8b397804 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000
a4a9e240 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000 (dependent strongest only, kept 722a8aea)

prior 0.50 → log-odds 0.000000 + 1.800000 (the counted weights) = 1.800000 → probability 0.8581

Under neighbouring settings of the same model: 0.7790 to 0.9121, a spread of 0.1331.

Half-even rounding, six places for weights and four for the probability. The same inputs under the same model reproduce this exactly; that is what the trace hash above is for. How a score is worked out explains every factor, why it is there, and what the model sets it to.

Your view

Registered views

Nobody has registered a view yet.

Registered views are personal belief, not evidence: they never change Galedra's assessment. Affiliations are self-declared and shown only for groups of 5 or more.

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.

“The study compiled 221,483 accessible precipitation gauges with observations from 1900–2022, of which 139,901 (63.2%) remained active within the past 30 years.” · 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 reports 221,483 accessible gauges from 1900–2022, with 139,901 still active within the past 30 years.

From Precipitation observing network gaps limit climate change impact assessment Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The passage directly reports 221,483 accessible gauges from 1900–2022 and says 63.2%, or 139,901, remained active within the past 30 years.

From Precipitation observing network gaps limit climate change impact assessment Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The University of East Anglia publication record repeats the study’s count of 221,483 internationally exchanged precipitation gauges spanning 1900–2022.

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

Institutional publication record; independence from the primary study should be audited.
The study reports 221,483 accessible precipitation gauges from 1900–2022, with 139,901 (63.2%) active within the past 30 years.

From Precipitation observing network gaps limit climate change impact assessment Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The study compiled publicly available global and national gauge datasets covering 221,483 gauges from 1900 to 2022.

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
f2a07e95		722a8aea

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	b22404de, 722a8aea, 8b397804, a4a9e240

Summary

Supported. The main support is: The University of East Anglia publication record repeats the study’s count of 221,483 internationally exchanged precipitation gauges spanning 1900–2022. d75eb5ae

1 further item repeats the same origin and is not independent evidence. f2a07e95

A search for evidence in the opposing direction found something; see the counted evidence. 0bfc9dd1

Review checks: 1 of 4. coverage:9a7d3881-279f-8008-965e-7baed5d629d8

Generated by stub-v0.1; every sentence cites graph ids.

Contribution history

seq	event	detail
23066	APPENDED
23067	ACCEPT	AUTOMATIC_AFTER_VALIDATION
23078	LINK_EVIDENCE	by 1efd24fe (accepted)
23112	TASK_RESULT	by 1efd24fe (accepted)
23223	LINK_EVIDENCE	by 1efd24fe (accepted)
24392	TASK_RESULT	by 1efd24fe (accepted)

Score trace

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  "claim": "9a7d3881-279f-8008-965e-7baed5d629d8",
  "links": [
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      "provenance": "INDEPENDENT",
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      "source_type": "SECONDARY_TEXT",
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      "link": "727a12fd-21b7-8096-ba48-8780722a8aea",
      "group": null,
      "edition": "NAMED_OR_UNRELATED",
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      "group": null,
      "edition": "NAMED_OR_UNRELATED",
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    {
      "kept": "727a12fd-21b7-8096-ba48-8780722a8aea",
      "link": "fc42cb96-da67-8a24-97ee-ba27a4a9e240",
      "group": null,
      "reason": "dependent_strongest_only",
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "ffe3a169-bcaf-8f79-bc15-fe74f2a07e95",
      "direction": "SUPPORT",
      "magnitude": "0.000000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
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      "effective_weight": "0.000000",
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  "model": "ledger-default@0.3.0",
  "prior": "0.50",
  "variants": {
    "spread": "0.1331",
    "permissive": "0.9121",
    "conservative": "0.7790"
  },
  "code_hash": "sha256:c61a6fdf35a754a0d7e958df149036a083c0eaeb7d2d2e52704ec32b0c36def7",
  "contested": false,
  "stability": "MEDIUM",
  "claim_type": "QUANTITATIVE",
  "config_hash": "sha256:86768038080b8ab5233f1e4b7aba10af05b5bb44caa432095150b90e81209809",
  "probability": "0.8581",
  "provisional": true,
  "evidence_sum": "1.800000",
  "snapshot_seq": 24393,
  "prior_log_odds": "0.000000",
  "support_groups": 1,
  "model_dependent": false,
  "review_coverage": "0.25",
  "truth_evaluable": true,
  "assessment_state": "SUPPORTED",
  "review_checklist": {
    "qualifiers_reviewed": {
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    },
    "opposing_search_done": {
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    "independence_reviewed": {
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      "ok": false
    },
    "primary_source_reviewed": {
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      ],
      "ok": true
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  "contradict_groups": 0,
  "rounding_boundary": false,
  "posterior_log_odds": "1.800000",
  "not_applicable_reason": null,
  "independence_unreviewed": 5
}