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

• Published in: Atmospheric Chemistry and Physics
• Main Authors: A. Pokhrel, K. Kawamura, B. Kunwar, K. Ono, A. Tsushima, O. Seki, S. Matoba, T. Shiraiwa
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2020
• Subjects: Physics; QC1-999; Chemistry; QD1-999; Svalbard; Greenland; Pacific; Aurora Peak; ice core; Tundra; Tunu; Alaska
• Online Access: https://doi.org/10.5194/acp-20-597-2020; https://doaj.org/article/1512792842184db5af03a1bb9089b6bb

A 180 m long (343 years) ice core was drilled in the saddle of Aurora Peak in Alaska (63.52 ∘ N, 146.54 ∘ W; elevation: 2825 m) and studied for biomass-burning tracers. Concentrations of levoglucosan and dehydroabietic and vanillic acids exhibit multidecadal variability, with higher spikes in 1678,...