To obtain a thorough knowledge of PM 2. 5 chemical composition and its impact on aerosol
optical properties across China, existing field studies conducted after the year 2000 are …

Mineral dust is a complex entity containing a range of iron minerals including poorly
crystalline to crystalline iron oxides to clay minerals. Important progress has been made to …

Fine-particle pollution associated with winter haze threatens the health of more than 400
million people in the North China Plain. Sulfate is a major component of fine haze particles …

Lag Ba'Omer, a nationwide bonfire festival in Israel, was chosen as a case study to
investigate the influence of a major biomass burning event on the light absorption properties …

pH is an important property of aerosol particles but is difficult to measure directly. Several
studies have estimated the pH values for fine particles in northern China winter haze using …

Extreme haze episodes repeatedly shrouded Bei**g during the winter of 2012–2013,
causing major environmental and health problems. To better understand these extreme …

Aerosol acidity largely regulates the chemistry of atmospheric particles, and resolving the
drivers of aerosol pH is key to understanding their environmental effects. We find that an …

Given significant challenges with available measurements of aerosol acidity, proxy methods
are frequently used to estimate the acidity of atmospheric particles. In this study, four of the …

Climate policies targeting energy-related CO2 emissions, which act on a global scale over
long time horizons, can result in localized, near-term reductions in both air pollution and …

Atmospheric brown carbon (BrC) is a significant contributor to light absorption and climate
forcing. However, little is known about a fundamental relationship between the chemical …