气候变化领域集成服务门户(CCPortal): Wildfire smoke impacts on indoor air quality assessed using crowdsourced data in California

CCPortal

DOI	10.1073/pnas.2106478118
	Wildfire smoke impacts on indoor air quality assessed using crowdsourced data in California
	Liang Y.; Sengupta D.; Campmier M.J.; Lunderberg D.M.; Apte J.S.; Goldstein A.H.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:36
英文摘要	Wildfires have become an important source of particulate matter (PM2.5 < 2.5-μm diameter), leading to unhealthy air quality index occurrences in the western United States. Since people mainly shelter indoors during wildfire smoke events, the infiltration of wildfire PM2.5 into indoor environments is a key determinant of human exposure and is potentially controllable with appropriate awareness, infrastructure investment, and public education. Using time-resolved observations outside and inside more than 1,400 buildings from the crowdsourced PurpleAir sensor network in California, we found that the geometric mean infiltration ratios (indoor PM2.5 of outdoor origin/ outdoor PM2.5) were reduced from 0.4 during non-fire days to 0.2 during wildfire days. Even with reduced infiltration, the mean indoor concentration of PM2.5 nearly tripled during wildfire events, with a lower infiltration in newer buildings and those utilizing air conditioning or filtration. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Biomass burning; Exposure; Indoor air; Low-cost PM2.5 sensors; PM2.5
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238647
作者单位	Department of Environmental Science Policy and Management, University of California, Berkeley, CA 94720, United States; Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720, United States; Department of Chemistry, University of California, Berkeley, CA 94720, United States; School of Public Health, University of California, Berkeley, CA 94720, United States
推荐引用方式 GB/T 7714	Liang Y.,Sengupta D.,Campmier M.J.,et al. Wildfire smoke impacts on indoor air quality assessed using crowdsourced data in California[J],2021,118(36).
APA	Liang Y.,Sengupta D.,Campmier M.J.,Lunderberg D.M.,Apte J.S.,&Goldstein A.H..(2021).Wildfire smoke impacts on indoor air quality assessed using crowdsourced data in California.Proceedings of the National Academy of Sciences of the United States of America,118(36).
MLA	Liang Y.,et al."Wildfire smoke impacts on indoor air quality assessed using crowdsourced data in California".Proceedings of the National Academy of Sciences of the United States of America 118.36(2021).