气候变化领域集成服务门户(CCPortal): 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

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DOI	10.5194/acp-20-597-2020
	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 A.; Kawamura K.; Kunwar B.; Ono K.; Tsushima A.; Seki O.; Matoba S.; Shiraiwa T.
发表日期	2020
ISSN	16807316
起始页码	597
结束页码	612
卷号	20 期号:1
英文摘要	A 180m 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 longrange atmospheric transport than other species. These compounds showed significant correlations with global lowertropospheric 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. © 2020 Author(s).
关键词	air quality atmospheric pollution biomass burning carbohydrate concentration (composition)decadal variation ice core long range transport Pacific Decadal Oscillation pyrolysis troposphere Alaska Alaska Range Arctic Aurora Peak Svalbard Svalbard and Jan Mayen United States Coniferophyta
语种	英语
来源机构	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132295
推荐引用方式 GB/T 7714	Pokhrel A.,Kawamura K.,Kunwar B.,et al. 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[J]. Atmospheric Chemistry and Physics,2020,20(1).
APA	Pokhrel A..,Kawamura K..,Kunwar B..,Ono K..,Tsushima A..,...&Shiraiwa T..(2020).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.,20(1).
MLA	Pokhrel A.,et al."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".20.1(2020).