Wildfire Smoke Impacts on Indoor Air Quality Assessed Using Crowdsourced Data in California

Liang, Yutong; Sengupta, Deep; Campmier, Mark J.; Lunderberg, David M.; Apte, Joshua S.; Goldstein, Allen H.

doi:10.1073/pnas.2106478118

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Wildfire Smoke Impacts on Indoor Air Quality Assessed Using Crowdsourced Data in California

2021
By Liang, Yutong ; Sengupta, Deep ; Campmier, Mark J. ; ...
Source: PNAS 118 (36) e2106478118
Series: 36

[PDF-1010.79 KB]

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Details:

Journal Title:

Proceedings of the National Academy of Sciences
Personal Author:

Liang, Yutong ; Sengupta, Deep ; Campmier, Mark J. ; Lunderberg, David M. ; Apte, Joshua S. ; ... More +

Liang, Yutong ; Sengupta, Deep ; Campmier, Mark J. ; Lunderberg, David M. ; Apte, Joshua S. ; Goldstein, Allen H. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office)

OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office) Less -
Description:

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.
Keywords:

[+]

Aerosols Air Quality Wildfires
Source:

PNAS 118 (36) e2106478118
Series:

36
DOI:

https://doi.org/10.1073/pnas.2106478118
Document Type:

Journal Article
Funding:

Grant no. NA16OAR4310107
Place as Subject:

California
Rights Information:

Other
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Submitted
Main Document Checksum:

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urn:sha256:75230c87408a34c37d3184632c7bfed89e1aca64c7208bd62301c5af8d607c70
Download URL:

https://repository.library.noaa.gov/view/noaa/45563/noaa_45563_DS1.pdf
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