Atmospheric Environment 

TL;DR: The present status of knowledge of the gas phase reactions of inorganic Ox, Hox and NOx species and of selected classes of volatile organic compounds (VOCs) and their degradation products in the troposphere is discussed in this paper.

TL;DR: The WRF/Chem model is statistically better skilled in forecasting O3 than MM5/Chem, with no appreciable differences between models in terms of bias with the observations, and consistently exhibits better skill at forecasting the O3 precursors CO and NOy at all of the surface sites.

TL;DR: This paper presents a general introduction and discussion of recent applications of the multilayer perceptron, one type of artificial neural network, in the atmospheric sciences.

TL;DR: In this article, the authors proposed a method for estimating the dry deposition velocities of atmospheric gases in the U.S. and surrounding areas and incorporated it into a revised computer code module for use in numerical models of atmospheric transport and deposition of pollutants over regional scales.

TL;DR: In this paper, the authors present the current state of understanding of the air pollution problems in China's mega cities and identify the immediate challenges to understanding and controlling air pollution in these densely populated areas.