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: UC Berkeley reports temperature-driven CO2 adsorption and release in Mojave soils and estimates a 1–3 gigaton annual global desert-soil exchange. weight 2.000000 evidence

Suppressed as dependent: The passage directly states that authors estimate one to three gigatons of carbon move into and out of desert soils globally each year.

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.

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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 authors estimate that 1–3 gigatons of carbon move into and out of desert soils globally each year through the described cycle.” · 1 claim · 28 September 2026
• “UC Berkeley researchers found that Mojave Desert minerals adsorb atmospheric CO2 as they cool at night and release it as they warm, with a global desert-soil...” · 2 claims · 28 September 2026

Evidence for

• UC Berkeley reports temperature-driven CO2 adsorption and release in Mojave soils and estimates a 1–3 gigaton annual global desert-soil exchange.

  From UC Berkeley Scientists Find a Carbon Cycle Hiding in Desert Minerals Read 2026-09-28 Relevance DIRECT Steps 0 Counted

  The passage directly states the 1–3 gigaton estimate and its Mojave-only basis.

• The passage directly states that authors estimate one to three gigatons of carbon move into and out of desert soils globally each year.

  From UC Berkeley Scientists Find a Carbon Cycle Hiding in Desert Minerals Read 2026-09-28 Relevance DIRECT Steps 0 Counted

Evidence against

None.

Qualifications

• The secondary report emphasizes that the worldwide share remains uncertain and requires measurements beyond the Mojave, qualifying rather than replacing the 1–3 gigaton estimate.

  From Wüstenböden atmen nachts Kohlendioxid ein und tagsüber wieder aus Read 2026-09-28 Relevance MODERATE Steps 0 Counted

  Material qualifier: the global extrapolation remains uncertain and needs measurements in other deserts.

• The worldwide share remains uncertain and requires measurements in drylands beyond the Mojave.

  From Wüstenböden atmen nachts Kohlendioxid ein und tagsüber wieder aus Read 2026-09-28 Relevance MODERATE Steps 0 Counted

  The 1–3 gigaton global figure is an extrapolation from Mojave data and remains uncertain pending measurements in other drylands.

Suppressed as dependent

Evidence	Group	Kept instead
cb4aae52		140b10fb

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	140b10fb, 9cc3ae50

Summary

Contribution history

seq	event	detail
13379	APPENDED
13380	ACCEPT	AUTOMATIC_AFTER_VALIDATION
13387	LINK_EVIDENCE	by 1efd24fe (accepted)
13392	TASK_RESULT	by 1efd24fe (accepted)
13427	LINK_EVIDENCE	by 1efd24fe (accepted)
13431	TASK_RESULT	by 1efd24fe (accepted)