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Mean Annual Tree-Ring Width Anomalies for Siberian Larch Following Major Volcanic Eruptions
Volcanic EventEruption YearYear +1 Ring Width Anomaly (mm)Year +2 Ring Width Anomaly (mm)Year +3 Ring Width Anomaly (mm)
Kuwae1453-0.42-0.68-0.25
Huaynaputina1600-0.81-0.54-0.18
Tambora1815-0.95-0.«?»-0.31
Krakatoa1883-0.36-0.22+0.04
Dendroclimatologists analyze radial tree-ring growth to reconstruct historical summer temperature fluctuations caused by volcanic aerosol emissions. Sulfate aerosols injected into the stratosphere reflect incoming solar radiation, cooling high-latitude landmasses and suppressing seasonal wood formation in subarctic trees. A team led by paleoclimatologist Dr. Marcus Thorne examined Siberian larch tree rings across four major volcanic events to determine how long post-eruption cooling persisted. The researchers observed that while the severity of growth reduction varied across events,       
Which choice most effectively uses data from the table to complete the statement?
A
every recorded eruption resulted in positive tree-ring width anomalies by the second year following the eruption.
B
the largest single-year growth suppression across all four events occurred in the third year following the 1815 Tambora eruption.
C
growth suppression was sustained across all three post-eruption years for the Kuwae, Huaynaputina, and Tambora events, whereas ring widths after the Krakatoa eruption recovered to positive anomalies by Year +3.
D
the Huaynaputina eruption caused greater ring width suppression in Year +2 than in Year +1.