作者: Piero Zennaro , Natalie Kehrwald , Jennifer Marlon , Tim Ruddiman , William F.
DOI: 10.1002/2015GL064259
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摘要: The timing of initiation human impacts on the global climate system is actively debated. Anthropogenic effects are evident since Industrial Revolution, but humans may have altered biomass burning, and hence system, for millennia. We use specific biomarker levoglucosan to produce first high-temporal resolution hemispheric reconstruction Holocene fire emissions inferred from ice core analyses. Levoglucosan recorded in Greenland North Eemian significantly increases last glacial, resulting a maximum around ~2.5 ka then decreasing until present. Here we demonstrate that drivers fail explain late burning variations centered be due anthropogenic land clearance.