The coronavirus-19 (COVID-19) pandemic led to government interventions to limit the
spread of the disease which are unprecedented in recent history; for example, stay at home …

Highly time-resolved data for volatile organic compounds (VOCs) can now be monitored.
Source analyses of such high time-resolved concentrations provides key information for …

Many places on earth still suffer from a high level of atmospheric fine particulate matter
(PM2. 5) pollution. Formation of a particulate pollution event or haze episode (HE) involves …

The global outbreak and spread of COVID-19 had a significant impact on the environment of
urban areas. This study aimed to provide a new insight into the urban transportation and air …

East Asian countries experience severe air pollution owing to their rapid development and
urbanization induced by substantial economic activities. South Korea and China are among …

Fine particulate matter (PM2. 5) exposure causes respiratory diseases by inducing
inflammation and oxidative stress. However, the correlation between the pulmonary …

Ambient concentrations of volatile organic compounds (VOCs) vary with emission rates,
meteorology, and chemistry. Conventional positive matrix factorization (PMF) loses …

Abstract A long-term (2013–2019) PM 2.5 speciation dataset measured in Tianjin, the
largest industrial city in northern China, was analyzed with dispersion normalized positive …

Abstract The Comprehensive Air-quality Model with extensions (CAMx) was used to explore
the sensitivity of PM 2.5 and O 3 concentrations to four selected meteorological factors: wind …

Ambient fine size fraction particulate matter (PM 2.5) sources were resolved by positive
matrix factorization at two Canadian cities on the Atlantic and Pacific coast over the 2010 …