Acidity, defined as pH, is a central component of aqueous chemistry. In the atmosphere, the
acidity of condensed phases (aerosol particles, cloud water, and fog droplets) governs the …

One of the most important parts of formulating a National Ambient Air Quality Standard is
specifying the measurement methods for determining and attaining compliance. The …

Severe events of wintertime particulate air pollution in Beijing (winter haze) are associated
with high relative humidity (RH) and fast production of particulate sulfate from the oxidation …

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 …

During the summer and fall of 1987, the Southern California Air Quality Study (SCAQS) was
conducted at more than 40 locations to acquire a database with meteorological, air quality …

The chemistry of OH in a remote nonprecipitating tropical cloud is studied with a coupled
gas‐phase and aqueous‐phase chemical model. The model takes into account the radial …

We use a model of agricultural sources of ammonia (NH3) coupled to a chemical transport
model to estimate the impact of US food export on particulate matter concentrations (PM2 …

The present review intends to critically assess recent developments in atmospheric aqueous
phase chemistry with special emphasis on radical kinetics, which is regarded as a long-term …

We use observations of the mass‐independent oxygen isotopic composition (Δ17O) of
sulfate in the marine boundary layer (MBL) to quantify the sulfate source from aqueous SO2 …

A PM10 (particulate matter with aerodynamic diameter equal to or less than 10 μm) aerosol
study was carried out at six sites in California's San Joaquin Valley (SJV) from 14 June 1988 …