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: Pokhrel, Ambarish, Kawamura, Kimitaka, Kunwar, Bhagawati, Ono, Kaori, Tsushima, Akane, Seki, Osamu, Matoba, Sumito, Shiraiwa, Takayuki
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications
• Subjects: 450; Aurora Peak; Greenland; Pacific; Svalbard; ice core; Tundra; Tunu; Alaska
• Online Access: http://hdl.handle.net/2115/76860; https://doi.org/10.5194/acp-20-597-2020

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