Ice core records of biomass burning tracers (levoglucosan, dehydroabietic and vanillic acids) from Aurora Peak in Alaska since 1660s: A new dimension of forest fire activities in the Northern Hemisphere

• Main Authors: Pokhrel, Ambarish, Kawamura, Kimitaka, Ono, Kaori, Tsushima, Akane, Seki, Osamu, Matoba, Sumio, Shiraiwa, Takayuki, Kunwar, Bhagawati
• Format: Text
• Language: English
• Published: 2019
• Subjects: Aurora Peak; Pacific; glacier; ice core; Alaska
• Online Access: https://doi.org/10.5194/acp-2019-139; https://www.atmos-chem-phys-discuss.net/acp-2019-139/

A 180 m long (ca. 274 years) ice core was drilled in the saddle of the Aurora Peak of Alaska (63.52° N; 146.54° W, elevation: 2825 m). The ice core samples were melt, concentrated and then derivatized with N,O-bis-(trimethylsilyl) trifluoroacetamide with 1 % trimethylsilyl chloride and pyridine foll...