Tree rings fail to capture climate after volcanos
PENN STATE (US) — Some climate cooling caused by past volcanic eruptions may not be evident in tree-ring reconstructions of temperature change, a new study suggests.Large enough temperature drops lead to greatly shortened or even absent growing seasons, according to climate researchers who compared tree-ring temperature reconstructions with model simulations of past temperature changes. “We know these tree rings capture most temperature changes quite well,” says Michael Mann, professor of meteorology and geosciences at Penn State. “But the problem appears to be in their response to the intense short-term cooling that occurs following a very large volcanic eruption....
Source: Futurity.org - Tuesday, 7 February
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