Biomass Burning is an Important Source of Organic Aerosols in Interior Alaska

Haque, Md. Mohammad; Kawamura, Kimitaka; Deshmukh, Dhananjay K.; Kunwar, Bhagawati; Kim, Yongwon

Biomass Burning is an Important Source of Organic Aerosols in Interior Alaska

Haque, Md. Mohammad; Kawamura, Kimitaka; Deshmukh, Dhananjay K. et al.

Journal of geophysical research atmospheres, 2021, 126(12), e2021JD034586

Permalink : https://hdl.handle.net/2115/84441

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アクセス権	open access
URI	https://hdl.handle.net/2115/84441
タイトル	Biomass Burning is an Important Source of Organic Aerosols in Interior Alaska
著者	Haque, Md. Mohammad ; Kawamura, Kimitaka ; Deshmukh, Dhananjay K. ; Kunwar, Bhagawati ; Kim, Yongwon
著者名 Haque, Md. Mohammad
e-Rad_Researcher 70201449 著者名 Kawamura, Kimitaka
著者名 Deshmukh, Dhananjay K.
著者名 Kunwar, Bhagawati
著者名 Kim, Yongwon
言語	英語
キーワード	domestic wood burning
	anhydrosugars
	lignin and resin acids
	seasonal variation
	potassium
	woodstove
発行日	2021-07-16
出版者	American Geophysical Union
収録物名	Journal of geophysical research atmospheres
巻(号)	126(12)
ページ	e2021JD034586
抄録	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.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Copyright 2021 American Geophysical Union.
PISSN	2169-897X
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1029/2021JD034586