ISC3

ISC3 (Industrial Source Complex) model is a popular steady-state Gaussian plume model which can be used to assess pollutant concentrations from a wide variety of sources associated with an industrial complex.

This model can account for the following:

• Point, area, line, and volume sources
• Settling and dry deposition of particles
• Downwash
• Separation of point sources
• Limited terrain adjustment

ISC3 operates in both long-term and short-term modes. The screening version of ISC3 is SCREEN3.

Very recently, the status of ISC3 as a Preferred/Recommended Model of the US Environmental Protection Agency has been withdrawn, but it can still be used as an alternative to the Preferred/Recommended models in regulatory applications with case-by-case justification to the reviewing authority.

Input data

ISC short term version required two sets of data: source data and hourly averaged meteorological data:

Source data

• Dimensions of the source
• Emission discharge rate
• Release height of the emission source

Meteorological data

• Ambient temperature, K
• Wind direction
• Wind speed, m/s
• Atmospheric stability classes (A through F, entered as 1 through 6)
• Urban and rural mixing height, m

See also

• Bibliography of atmospheric dispersion modeling
• Atmospheric dispersion modeling
• List of atmospheric dispersion models

Further reading

For those who are unfamiliar with air pollution dispersion modelling and would like to learn more about the subject, it is suggested...
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