Hygroscopic properties of particulate matter and effects of their interactions with weather on visibility.

ABSTRACT: The hygroscopic property of particulate matter (PM) influencing light scattering and absorption is vital for determining visibility and accurate sensing of PM using a low-cost sensor. In this study, we examined the hygroscopic properties of coarse PM (CPM) and fine PM (FPM; PM_2.5) and the effects of their interactions with weather factors on visibility. A censored regression model was built to investigate the relationships between CPM and PM_2.5 concentrations and weather observations. Based on the observed and modeled visibility, we computed the optical hygroscopic growth factor, [Formula: see text], and the hygroscopic mass growth, [Formula: see text], which were applied to PM_2.5 field measurement using a low-cost PM sensor in two different regions. The re

SUBMITTER: Won WS 

PROVIDER: S-EPMC8361198 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature