Claim

A study using a localized black-carbon inventory and revised health-risk function estimated that over 540,000 premature deaths were attributable to black carbon in China in 2015.

Type QUANTITATIVE · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 15170 · qualifiers {"location":"China","population":"Premature deaths attributed to black-carbon exposure","time_range":"2015","denominator":"Study estimate using a localized inventory and revised health-risk function"}

26 words; atomic claims are usually under 25a conjunction joins clauses that may be separately evaluable

Referenced 118 times: checked 3, looked up by assistants 0, viewed 69, shared 46. A count of attention, not evidence.

Topics

Public health · 1efd24fe Climate · 1efd24fe

Assessment

Supported

Score: 0.9871 under ledger-default@0.3.0 at snapshot 27745

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

3 independent evidence lineages · review checks 1 of 4 · stability HIGH

Main unresolved issue: 6 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:781f2b2b-5cc8-805d-8e27-7a33dabf7cdb

Not yet independently audited.Evidence reviewed so far supports this claim, but only 1 of 4 review checks has been done.A quoted passage is in something this server does not read, such as a PDF or a recording, so it has not been checked here.

Why?

Strongest counted support: The primary Nature Communications article estimates over 540,000 China premature deaths attributable to black carbon in 2015. weight 2.000000 evidence

Suppressed as dependent: The excerpt directly reports over 540,000 premature deaths attributable to black carbon in China in 2015 and names the estimation method.

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 Supported.

Hide calculation

0.9871 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 1 of 4 · stability HIGH · 6 sources, 3 independent lineages

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:449700c9df857da8ae7838272030a342495cee6459beae659f6d9f82b048a894

Last changed at entry seq 16136; 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
30d8fa25 support	relevance DIRECT 2.0 × observation MODEL_OUTPUT 0.0 × 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	0.000000	0.000000 (dependent strongest only, kept 81f83a97)
81f83a97 support	relevance DIRECT 2.0 × observation MODEL_OUTPUT 0.0 × 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	0.000000	0.000000
e11c3007 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
157ce4aa support	relevance MODERATE 0.6 × 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	0.540000	0.540000
3c8c4be6 qualify	relevance MODERATE 0.6 × observation MEASUREMENT 1.0 × 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	0.600000	0.000000 (non directional)
4f048918 support	relevance DIRECT 2.0 × observation MEASUREMENT 1.0 × 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	2.000000	2.000000

prior 0.50 → log-odds 0.000000 + 4.340000 (the counted weights) = 4.340000 → probability 0.9871

Under neighbouring settings of the same model: 0.9543 to 0.9965, a spread of 0.0422.

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.

“A study using a localized black-carbon inventory and revised health-risk function estimated that over 540,000 premature deaths were attributable to black...” · 1 claim · 29 September 2026
“A study using a localized black-carbon inventory and revised health-risk function estimated that over 540,000 premature deaths were attributable to black...” · 1 claim · 29 September 2026
“A localized black-carbon inventory estimated over 540,000 premature deaths attributable to black carbon in China in 2015, while the CMIP6 inventory...” · 2 claims · 29 September 2026

Evidence for

The abstract estimates over 540,000 premature deaths from black carbon in China in 2015 using a localized inventory and revised health-risk function.

From The Hidden Health and Climate Burden of Black Carbon under China’s Dual Carbon Strategy Read 2026-09-29 Relevance DIRECT Steps 0 Counted

The abstract directly states the study's estimate and methods context.
The excerpt directly reports over 540,000 premature deaths attributable to black carbon in China in 2015 and names the estimation method.

From The Hidden Health and Climate Burden of Black Carbon under China’s Dual Carbon Strategy Read 2026-09-29 Relevance DIRECT Steps 0 Counted

The passage explicitly states the estimate, location, year, and method context.
Nature Portfolio’s atmospheric-chemistry listing summarizes the study as estimating over 540,000 black-carbon-related premature deaths in China in 2015.

From Atmospheric chemistry - Latest research and news | Nature Read 2026-09-29 Relevance MODERATE Steps 0 Counted

Secondary summary corroborates the study’s mortality estimate but is not an independent primary analysis.
The primary Nature Communications article estimates over 540,000 China premature deaths attributable to black carbon in 2015.

From The Hidden Health and Climate Burden of Black Carbon under China’s Dual Carbon Strategy Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Directly supports the claim’s year, location, method description, and mortality estimate.
The peer-reviewed study estimates 543,000 black-carbon-attributable premature deaths in China in 2015 using a localized inventory and revised risk function.

From The Hidden Health and Climate Burden of Black Carbon under China’s Dual Carbon Strategy Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Primary article text directly matches the claim’s estimate, year, geography, inventory, and health-risk methodology.

Evidence against

None.

Qualifications

The article distinguishes the localized PKU-BC inventory from CMIP6 estimates and reports a 45% forcing difference.

From The Hidden Health and Climate Burden of Black Carbon under China’s Dual Carbon Strategy Read 2026-09-29 Relevance MODERATE Steps 0 Counted

Clarifies that the estimate is inventory- and model-dependent.

Suppressed as dependent

Evidence	Group	Kept instead
d0a6958d		81f83a97

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	30d8fa25, 81f83a97, e11c3007, 3c8c4be6, 4f048918

Summary

Supported. The main support is: The peer-reviewed study estimates 543,000 black-carbon-attributable premature deaths in China in 2015 using a localized inventory and revised risk function. 45eeba9e

1 further item repeats the same origin and is not independent evidence. d0a6958d

Qualifier: The article distinguishes the localized PKU-BC inventory from CMIP6 estimates and reports a 45% forcing difference. 92a71fa1

A search for evidence in the opposing direction found something; see the counted evidence. 477100cd

Review checks: 1 of 4. coverage:781f2b2b-5cc8-805d-8e27-7a33dabf7cdb

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

Contribution history

seq	event	detail
15170	APPENDED
15171	ACCEPT	AUTOMATIC_AFTER_VALIDATION
15182	LINK_EVIDENCE	by 1efd24fe (accepted)
15188	TASK_RESULT	by 1efd24fe (accepted)
15203	LINK_EVIDENCE	by 1efd24fe (accepted)
15213	TASK_RESULT	by 1efd24fe (accepted)
16135	LINK_EVIDENCE	by 1efd24fe (accepted)

Score trace

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