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A 1100‐Year Blue‐Ring Record Reveals Sub‐Annual Cooling Events Hidden in Tree‐Ring Width Chronologies

open access: yesGeophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Tree‐ring width (RW) records primarily capture low‐frequency temperature variability, yet resolving high‐frequency signals is critical for testing climate models and contextualizing modern extremes. Blue rings (BRs)—bands of unlignified cells revealed by micro‐anatomical staining—capture short‐lived cooling events.
Liliana Siekacz   +4 more
wiley   +1 more source

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