Assessing residential PM_2.5 concentrations and infiltration factors with high spatiotemporal resolution using crowdsourced sensors.

ABSTRACT: Building conditions, outdoor climate, and human behavior influence residential concentrations of fine particulate matter (PM_2.5). To study PM_2.5 spatiotemporal variability in residences, we acquired paired indoor and outdoor PM_2.5 measurements at 3,977 residences across the United States totaling >10,000 monitor-years of time-resolved data (10-min resolution) from the PurpleAir network. Time-series analysis and statistical modeling apportioned residential PM_2.5 concentrations to outdoor sources (median residential contribution = 52% of total, coefficient of variation = 69%), episodic indoor emission events such as cooking (28%, CV = 210%) and persistent indoor sources (20%, CV = 112%). Residences in the temperate marine climate zone experienced h

SUBMITTER: Lunderberg DM 

PROVIDER: S-EPMC10723120 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature