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the claim
Unusual frost occurred in trees during the summer of 536 AD
the verdict
SUPPORTED
the evidence backs this
refutedsupported
the weight of evidence
3 sources for · 0 against

Tree-ring and paleoclimate evidence strongly supports the occurrence of an extreme climate downturn and dust-veil event during the summer of 536 AD.

Evidence for · 3
Dendrochronology raises questions about the nature of the AD 536 dust-veil event
1994 · cited by 93
Dendrochronological data demonstrates a significant climate anomaly across the AD 536 dust-veil event affecting tree growth.
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The analysis

The claim is a specific, empirically verifiable historical/climatic event ('Unusual frost occurred in trees during the summer of 536 AD'). Papers [1], [4], and [8] directly support the existence of severe climate anomalies, cooling, and tree-ring disruptions linked to the AD 536 volcanic dust veil. There are no papers refuting this well-established historical climatology fact.

More for · 2
Volcanic dust veils from sixth century tree-ring isotopes linked to reduced irradiance, primary production and human health.
2018 · cited by 9
Isotope records from tree rings link the large volcanic eruptions of AD 536 and 540 to severe climate cooling and reduced solar radiation.
Buried in water, burdened by nature-Resilience carried the Iron Age people through Fimbulvinter.
2020 · cited by 5
Historical and archaeological records confirm that a severe climatic downturn hit European communities during the 6th century AD.
The paper trail · every fact has a biography
first checked04 Aug 2026
judged → SUPPORTED · 8704 Aug 2026
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