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, Sumio, Shiraiwa, Takayuki
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2020
• Subjects: article; Verlagsveröffentlichung; Svalbard; Greenland; Pacific; Aurora Peak; ice core; Tundra; Tunu; Alaska
• Online Access: https://doi.org/10.5194/acp-20-597-2020; https://noa.gwlb.de/receive/cop_mods_00050072; https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049688/acp-20-597-2020.pdf; https://acp.copernicus.org/articles/20/597/2020/acp-20-597-2020.pdf

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, 16...