Urban air pollution represents one of the greatest environmental challenges facing mankind
in the 21st century. 1, 2 Noticeably, many develo** countries, such as China and India …

Amines are emitted by a wide range of sources and are ubiquitous atmospheric organic
bases. Approximately 150 amines and about 30 amino acids have been identified in the …

This comprehensive text describes the atmospheric processes, numerical methods, and
computational techniques required for a scientist to successfully study air pollution and …

This study presents ISORROPIA II, a thermodynamic equilibrium model for the K+–Ca 2+–
Mg 2+–NH 4+–Na+–SO 4 2−–NO 3−–Cl−–H 2 O aerosol system. A comprehensive …

We describe a model for predicting the size‐resolved distribution of atmospheric dust for
climate and chemistry‐related studies. The dust distribution from 1990 to 1999 is simulated …

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 …

Abstract The 1999 Regional Haze Rule provides a context for this review of visibility, the
science that describes it, and the use of that science in regulatory guidance. The scientific …

The aerosol component of the Community Multiscale Air Quality (CMAQ) model is designed
to be an efficient and economical depiction of aerosol dynamics in the atmosphere. The …

A year-long field study to characterize the ionic species in PM2. 5 was carried out in
Shanghai and Bei**g, China, in 1999–2000. Weekly samples of PM2. 5 were collected …

The physical state of a material is described as its phase. Common phases of the molecule
H2O include vapor, liquid water, and ice. Examples of these phases in the atmosphere are …