4. Regulatory Models
This chapter discusses regulatory models for environmental quality assessment, particularly focusing on dispersion modeling. It emphasizes the importance of understanding the interactions between air masses and how pollutants disperse in various environmental contexts. The chapter also introduces different modeling techniques and frameworks used for accurate assessment of air pollution.
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1.4Lecture – 43
What we have learnt
- Dispersion models help estimate pollutant concentration in the environment.
- The assumptions made in dispersion models may not always reflect the complexities of real-world scenarios.
- Two primary regulatory models in use are AERMOD and CALPUFF, each with specific applications and requirements.
Key Concepts
- -- Dispersion Model
- A mathematical framework used to predict how pollutants disperse in the air, factoring in various environmental parameters.
- -- Gaussian Dispersion Model
- A common method used for estimating air pollutant concentrations based on a Gaussian distribution curve, assuming steady-state conditions.
- -- AERMOD
- A modern regulatory dispersion model used for predicting the impact of emissions from industries on air quality.
- -- CALPUFF
- A puff dispersion model that simulates the transport and dispersion of air pollutants over time, suitable for non-steady state conditions.
- -- Stack Downwash
- The downward movement of pollutants from the stack due to nearby buildings or structures, affecting pollutant concentration at the ground level.
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