Impacts of the COVID-19 responses on traffic-related air pollution in a Northwestern US city.

ABSTRACT: This study evaluates the COVID-19 impacts on traffic-related air pollution, including ultrafine particles (UFPs), PM_2.5, black carbon (BC), NO, NO₂, NO_x, and CO in a Northwestern US city. Hourly traffic, air pollutants, and meteorological data on/near a major freeway in the downtown of Seattle, Washington, were collected for five weeks before and ten weeks after the Washington Stay Home Order (SHO) was enacted, respectively (February 17-May 31, 2020). The pollutants between pre- and post-SHO periods were compared, and their differences were statistically tested. Besides, first-order multivariate autoregressive (MAR(1)) models were developed to reveal the impacts specific to the change of traffic due to the COVID-19 responses while controlling for meteorolog

SUBMITTER: Xiang J 

PROVIDER: S-EPMC7386255 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature