Articles | Volume 20, issue 1
Atmos. Chem. Phys., 20, 597–612, 2020
https://doi.org/10.5194/acp-20-597-2020
Atmos. Chem. Phys., 20, 597–612, 2020
https://doi.org/10.5194/acp-20-597-2020
Research article
17 Jan 2020
Research article | 17 Jan 2020

Ice core records of levoglucosan and dehydroabietic and vanillic acids from Aurora Peak in Alaska since the 1660s: a proxy signal of biomass-burning activities in the North Pacific Rim

Ambarish Pokhrel et al.

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A 180 m long (ca. 274 year) ice core was drilled in the saddle of the Aurora Peak in Alaska (63.52° N, 146.54° W; elevation: 2,825 m). The ice core samples were derived with O-bis-(trimethylsilyl)trifluoroacetamide with 1 % trimethylsilyl chloride and pyridine followed by gas-chromatography–mass-spectrometry analyses. Levoglucosan, dehydroabietic acid and vanillic acid are reported for the first time from the alpine glacier to better understand historical biomass burning.
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