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
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,...
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ftcopernicus:oai:publications.copernicus.org:acp74597 2023-05-15T16:29:53+02:00 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 Pokhrel, Ambarish Kawamura, Kimitaka Kunwar, Bhagawati Ono, Kaori Tsushima, Akane Seki, Osamu Matoba, Sumio Shiraiwa, Takayuki 2020-01-17 application/pdf https://doi.org/10.5194/acp-20-597-2020 https://www.atmos-chem-phys.net/20/597/2020/ eng eng doi:10.5194/acp-20-597-2020 https://www.atmos-chem-phys.net/20/597/2020/ eISSN: 1680-7324 Text 2020 ftcopernicus https://doi.org/10.5194/acp-20-597-2020 2020-01-20T15:41:59Z 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, 1692, 1695, 1716, 1750, 1764, 1756, 1834, 1898, 1913, 1966 and 2005 CE. Historical trends of these compounds showed enhanced biomass-burning activities in the deciduous broadleaf forests, boreal conifer forests, and/or tundra woodland and mountain ecosystems before the 1830s and after the Great Pacific Climate Shift (GPCS). The gradually elevated level of dehydroabietic acid after the GPCS is similar to p -hydroxybenzoic acid ( p -HBA) from the Svalbard ice core, suggesting common climate variability in the Northern Hemisphere. The periodic cycle of levoglucosan, which seemed to be associated with the Pacific Decadal Oscillation (PDO), may be more involved with the long-range atmospheric transport than other species. These compounds showed significant correlations with global lower-tropospheric temperature anomalies (GLTTAs). The relations of the biomass-burning tracers with the PDO and GLTTA in this study suggest that their emission, frequency and deposition are controlled by the climate-driven forces. In addition, historical trends of dehydroabietic and vanillic acids (burning products of resin and lignin, respectively) from our ice core demonstrate the Northern Hemispheric connections to the common source regions as suggested from other ice core studies from Svalbard, Akademii Nauk and Tunu Greenland in the Northern Hemisphere. Text Greenland ice core Svalbard Tundra Tunu Alaska Copernicus Publications: E-Journals Aurora Peak ENVELOPE(144.200,144.200,-67.383,-67.383) Greenland Pacific Svalbard Atmospheric Chemistry and Physics 20 1 597 612 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
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, 1692, 1695, 1716, 1750, 1764, 1756, 1834, 1898, 1913, 1966 and 2005 CE. Historical trends of these compounds showed enhanced biomass-burning activities in the deciduous broadleaf forests, boreal conifer forests, and/or tundra woodland and mountain ecosystems before the 1830s and after the Great Pacific Climate Shift (GPCS). The gradually elevated level of dehydroabietic acid after the GPCS is similar to p -hydroxybenzoic acid ( p -HBA) from the Svalbard ice core, suggesting common climate variability in the Northern Hemisphere. The periodic cycle of levoglucosan, which seemed to be associated with the Pacific Decadal Oscillation (PDO), may be more involved with the long-range atmospheric transport than other species. These compounds showed significant correlations with global lower-tropospheric temperature anomalies (GLTTAs). The relations of the biomass-burning tracers with the PDO and GLTTA in this study suggest that their emission, frequency and deposition are controlled by the climate-driven forces. In addition, historical trends of dehydroabietic and vanillic acids (burning products of resin and lignin, respectively) from our ice core demonstrate the Northern Hemispheric connections to the common source regions as suggested from other ice core studies from Svalbard, Akademii Nauk and Tunu Greenland in the Northern Hemisphere. |
format |
Text |
author |
Pokhrel, Ambarish Kawamura, Kimitaka Kunwar, Bhagawati Ono, Kaori Tsushima, Akane Seki, Osamu Matoba, Sumio Shiraiwa, Takayuki |
spellingShingle |
Pokhrel, Ambarish Kawamura, Kimitaka Kunwar, Bhagawati Ono, Kaori Tsushima, Akane Seki, Osamu Matoba, Sumio Shiraiwa, Takayuki 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 |
author_facet |
Pokhrel, Ambarish Kawamura, Kimitaka Kunwar, Bhagawati Ono, Kaori Tsushima, Akane Seki, Osamu Matoba, Sumio Shiraiwa, Takayuki |
author_sort |
Pokhrel, Ambarish |
title |
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 |
title_short |
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 |
title_full |
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 |
title_fullStr |
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 |
title_full_unstemmed |
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 |
title_sort |
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 |
publishDate |
2020 |
url |
https://doi.org/10.5194/acp-20-597-2020 https://www.atmos-chem-phys.net/20/597/2020/ |
long_lat |
ENVELOPE(144.200,144.200,-67.383,-67.383) |
geographic |
Aurora Peak Greenland Pacific Svalbard |
geographic_facet |
Aurora Peak Greenland Pacific Svalbard |
genre |
Greenland ice core Svalbard Tundra Tunu Alaska |
genre_facet |
Greenland ice core Svalbard Tundra Tunu Alaska |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-20-597-2020 https://www.atmos-chem-phys.net/20/597/2020/ |
op_doi |
https://doi.org/10.5194/acp-20-597-2020 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
20 |
container_issue |
1 |
container_start_page |
597 |
op_container_end_page |
612 |
_version_ |
1766019588790681600 |