Affiliation:
1. The author is at the Institut für Chemie und Dynamik der Geosphäre, Forschungszentrum Jülich, D-52425 Jülich, Germany.
Abstract
Oxidation rates of trace gases in the troposphere depend on species-specific rate coefficients and are predominantly governed by the concentration of the hydroxyl radical (OH), the most important oxidizing molecule in the troposphere. The concentration of OH is in local photochemical steady state; it is, however, dependent on the concentration of trace gases such as ozone, water vapor, volatile organic compounds, and oxides of nitrogen. Diffusive and advective transport processes influence and change the concentrations of these trace gases. Oxidative and transport time scales are often of similar magnitude, which leads to coupling between tropospheric chemistry and transport.
Publisher
American Association for the Advancement of Science (AAAS)
Reference16 articles.
1. Atmospheric Aerosols: Biogeochemical Sources and Role in Atmospheric Chemistry
2. Tropospheric Air Pollution: Ozone, Airborne Toxics, Polycyclic Aromatic Hydrocarbons, and Particles
3. Dynamics of Transport Processes in the Upper Troposphere
4. A box model is a chemical model that allows calculation of the change of concentrations of reactants products and intermediate species as a function of time without consideration of the effects of molecular diffusion or macroscopic transport.
5. It is assumed that the VOC and NO x concentrations of the surrounding air into which the diluting air masses spread are negligibly small.
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