Volcanic cooling not recorded by tree rings
Nature Geoscience
2012년2월6일
Reconstructions of past climate on the basis of tree rings may miss the short-lived cooling events caused by volcanic eruptions, reports a paper published online this week in Nature Geoscience. The work suggests that, in particular, the tree-ring-based reconstructions may be missing cooling linked to the ad 1258-1259 eruption of an unidentified volcano.Tree-ring chronologies are often collected from regions that are at or near the minimum temperature for tree growth. Michael Mann and colleagues used numerical simulations of climate and tree growth to show that when temperatures fall abruptly for one or two growing seasons, trees in these regions undergo little or no growth. The resultant lack of a tree ring corresponding to the period of cooling thus masks the climate event in subsequent reconstructions.These results show that a 2 °C cooling associated with the ad 1258-1259 eruption (as indicated by climate models) cannot be excluded by existing tree-ring data.
doi: 10.1038/ngeo1394
리서치 하이라이트
-
8월11일
Ecology: Forest responses to climate changeNature
-
8월10일
Environment: Sharks, skates and rays at risk in protected areasNature Communications
-
8월9일
Ecology: Climate change can aggravate over half of known human pathogensNature Climate Change
-
8월4일
Environment: Extreme flooding and drought make risk management difficultNature
-
8월3일
Environment: Salt may inhibit lightning in sea stormsNature Communications
-
7월29일
Environment: Costs of amphibian and reptile invasions exceeded US$ 17 billion between 1986 and 2020Scientific Reports
