Atmospheric dispersion modeling is the mathematical simulation of how air pollutants disperse in the ambient atmosphere. It is performed with computer programs that include algorithms to solve the mathematical equations that govern the pollutant dispersion.

2024年11月21日 · Dispersion modeling uses mathematical formulations to characterize the atmospheric processes that disperse a pollutant emitted by a source. Based on emissions and meteorological inputs, a dispersion model can be used to predict concentrations at selected downwind receptor locations.

2025年1月1日 · The movement and distribution of contaminants in the Earth’s atmosphere is referred to as atmospheric dispersion. The basic processes of air dispersion involve three major mechanisms: advection, diffusion, and deposition (Albani et al., 2015, Farhane et al., 2022). Advection is the horizontal transfer of pollutants across multiple scales ...

2022年7月14日 · Atmospheric pollutant dispersion models have played an enormous role in setting and regulating atmospheric emission levels and have likely played a vital role in the improvement in air quality observed across many westernised …

2024年11月26日 · Air quality dispersion models predict the impact of pollutants released from various sources such as power plants and roadways. The models are used by EPA, states, tribes and local agencies to assess control strategies, regulate emissions, and evaluate mitigation options, particularly during the planning and permitting phases of projects.

Air Pollutant Dispersion from Point Sources • Plume rise affects dispersion and transport – Affects maximum ground level concentrations – Affects distance to maximum ground level conc.

2013年10月4日 · Air Dispersion Modeling begins with a primer that enables readers to quickly grasp basic principles by developing their own air dispersion model. Next, the book offers everything readers need to work with air dispersion models …

Another classic computation involves finding the location and value of the maximum ground level concentration downwind of a tall stack. The newest EPA plume model is called ‘Aermod’ and incorporates this downdraft effect.

Air dispersion modeling has become one of the main tools in the academic study of air quality and in environmental engineering practice. It is a key element in most environmental impact assessments. Despite its importance, the field has not seen any new comprehensive textbooks in more than a decade.

2014年1月1日 · An air dispersion models can be employed for predicting concentrations downwind of the source for environmental impact assessments, risk analysis, emergency planning, and development and implementation of air emission standards.