气候变化领域集成服务门户(CCPortal): Biomass Burning is an Important Source of Organic Aerosols in Interior Alaska

CCPortal

DOI	10.1029/2021JD034586
	Biomass Burning is an Important Source of Organic Aerosols in Interior Alaska
	Haque M.M.; Kawamura K.; Deshmukh D.K.; Kunwar B.; Kim Y.
发表日期	2021
ISSN	2169897X
卷号	126 期号:12
英文摘要	Biomass burning (BB) affects air quality, the global cycling of carbon, climate, and human health. Intensive BB activities occur throughout the year due to wildfires and domestic wood burning in Fairbanks. We collected total suspended particle samples from the air in Fairbanks from June 2008 to June 2009. Here, we report seasonal variations in the molecular composition of organic aerosols and its BB contributions in Fairbanks. Levoglucosan is the dominant BB tracer (annual mean 67 ± 77 ng m−3), showing a winter maximum (145 ± 47 ng m−3) and spring minimum (12 ± 12 ng m−3). Levoglucosan showed significant correlations (p < 0.001) with organic carbon (OC), water-soluble organic carbon (WSOC), and PM2.5, indicating a significant contribution of BB to hazes in Fairbanks. However, no correlation exists between levoglucosan and non-sea salt potassium (nss-K+), which has been proposed as a BB tracer. We hypothesize that nss-K+ is removed by deposition on the inner surfaces of woodstove chimneys. Levoglucosan contributes 3.6% to OC and 6.3% to WSOC in winter, indicating that BB significantly affects carbonaceous aerosols in central Alaska. Moreover, positive matrix factorization analysis demonstrates that BB is an important source (47.5%) of Fairbanks year-round aerosols. We conclude that domestic wood burning is an important source of atmospheric particles that impact the air quality of Fairbanks, especially in winter. We presumed that Fairbanks BB products might be transported to the remote Arctic, potentially affecting the chemical composition of Arctic aerosols. These findings will be useful to better understand the seasonal influence of BB on the Arctic and subarctic aerosols. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	anhydrosugars; domestic wood burning; lignin and resin acids; potassium; seasonal variation; woodstove
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185122
作者单位	Yale-NUIST Center on Atmospheric Environment, International Joint Laboratory on Climate and Environment Change (ILCEC), Nanjing University of Information Science & Technology, Nanjing, China; School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, China; Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan; Chubu Institute for Advanced Studies, Chubu University, Kasugai, Japan; International Arctic Research Center, University of Alaska Fairbanks, Fairbanks, AK, United States
推荐引用方式 GB/T 7714	Haque M.M.,Kawamura K.,Deshmukh D.K.,et al. Biomass Burning is an Important Source of Organic Aerosols in Interior Alaska[J],2021,126(12).
APA	Haque M.M.,Kawamura K.,Deshmukh D.K.,Kunwar B.,&Kim Y..(2021).Biomass Burning is an Important Source of Organic Aerosols in Interior Alaska.Journal of Geophysical Research: Atmospheres,126(12).
MLA	Haque M.M.,et al."Biomass Burning is an Important Source of Organic Aerosols in Interior Alaska".Journal of Geophysical Research: Atmospheres 126.12(2021).