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
-
2월26일
Environment: Shifting from small to medium plastic bottles could reduce PET wasteScientific Reports
-
2월24일
Environment: European forests more vulnerable to multiple threats as climate warmsNature Communications
-
2월11일
Environment: Global CFC-11 emissions in declineNature
-
2월9일
Marine science: Bleaching leaves long-lasting effects on coral physiologyNature Ecology & Evolution
-
2월4일
Environmental science: Fresh water in the ice-age Arctic OceanNature
-
2월3일
Climate science: Under-reporting of greenhouse gas emissions in US citiesNature Communications