ISCST3 Tech Guide

Gaussian Plume Air Dispersion Model

9. Index

Area Source
Deposition Algorithm - REF --- 1 2
For the Long Term Model - REF --- 1
For the Short Term Model - REF --- 1 2
Atmospheric resistance - REF --- 1 2
Attenuation correction factor - REF --- 1

Briggs plume rise formulas
Buoyant Plume Rise - REF --- 1 2
Momentum Plume Rise - REF --- 1 2
Stack Tip Downwash - REF --- 1
Building downwash procedures - REF --- 1 2
And Buoyancy-Induced Dispersion - REF --- 1
Effects on Dispersion Parameters - REF --- 1
For the Long Term Model - REF --- 1 2 3 4
General - REF --- 1 2
Huber and Snyder - REF --- 1
Schulman and Scire - REF --- 1 2 3 4
Schulman-Scire Plume Rise - REF --- 1 2
Virtual Distances - REF --- 1
Wake Plume Height - REF --- 1
Buoyancy flux - REF --- 1 2
Buoyancy-induced dispersion - REF --- 1 2
Buoyant plume rise
Stable - REF --- 1
Unstable and Neutral - REF --- 1

Cartesian receptor network - REF --- 1
Complex terrain modeling
Short Term Model - REF --- 1 2
Crossover temperature difference - REF --- 1
Crosswind distance - REF --- 1 2 3 4 5 6

Decay coefficient - REF --- 1
Decay term - REF --- 1 2 3
For the Long Term Model - REF --- 1 2 3
For the Short Term Model - REF --- 1 2
Depletion
For the Dry Deposition Algorithm - REF --- 1 2
For the Wet Deposition Algorithm - REF --- 1
Deposition layer resistance - REF --- 1
Deposition velocity - REF --- 1 2
Direction-specific building dimensions - REF --- 1 2
With Huber-Snyder Downwash - REF --- 1
Dispersion coefficients
See Dispersion Parameters - REF --- 1 2
Dispersion parameters
For the Long Term Model - REF --- 1
McElroy-Pooler - REF --- 1 2
Pasquill-Gifford - REF --- 1 2 3 4
Distance-dependent plume rise - REF --- 1
Downwind distance - REF --- 1 2 3 4 5 6
And Virtual Distance - REF --- 1
For Area Sources - REF --- 1
For Building Wake Dispersion - REF --- 1
For Dispersion Coefficients - REF --- 1
Dry deposition - REF --- 1 2 3
For the Long Term Model - REF --- 1
For the Short Term Model - REF --- 1

Elevated terrain - REF --- 1 2 3
Truncation Above Stack Height - REF --- 1
Entrainment coefficient - REF --- 1

Final plume rise - REF --- 1
Distance to - REF --- 1
Stable - REF --- 1 2
Unstable or Neutral - REF --- 1 2
Flagpole receptor - REF --- 1

Gaussian plume model - REF --- 1 2
Sector Averages for Complex Terrain - REF --- 1
Sector Averages for Long Term - REF --- 1
GEP stack height - REF --- 1 2
Gradual plume rise - REF --- 1
For Buoyant Plumes - REF --- 1
For Schulman-Scire Downwash - REF --- 1
Stable Momentum - REF --- 1
Unstable and Neutral Momentum - REF --- 1
Used for Wake Plume Height - REF --- 1

Half life - REF --- 1
Huber-Snyder downwash algorithm - REF --- 1

Initial lateral dimension
For the Long Term Model - REF --- 1
For Volume Sources - REF --- 1 2
Initial plume length
Schulman-Scire Downwash - REF --- 1
Initial plume radius
Schulman-Scire Downwash - REF --- 1
Initial Vertical Dimension
For Volume Sources - REF --- 1
Intermediate terrain - REF --- 1

Jet entrainment coefficient - REF --- 1 2

Lateral dispersion parameters - REF --- 1 2 3
For the Long Term Model - REF --- 1
Lateral virtual distance
For the Long Term Model - REF --- 1 2 3
Lateral virtual distances
For Building Downwash - REF - 1
Line source
Approximation for Schulman-Scire Sources - REF --- 1 2
Line sources, modeled as volumes - REF --- 1 2
Linear decay factor
Schulman-Scire Downwash - REF --- 1 2
Long-term Dispersion Model - REF --- 1

McElroy-Pooler dispersion parameters
See Dispersion parameters - REF --- 1
Mixing heights - REF --- 1
Momentum flux - REF --- 1 2
Momentum plume rise - REF --- 1 2 3
Stable - REF --- 1
Unstable and Neutral - REF --- 1

Open pit source
deposition algorithm - REF --- 1 2
for the Long Term model - REF --- 1
for the Short Term model - REF --- 1
Open pit sources - REF --- 1 2

Pasquill-Gifford dispersion parameters
See Dispersion Parameters - REF --- 1
Plume rise For Schulman-Scire Downwash - REF --- 1
For the Long Term Model - REF --- 1
For the Short Term Model - REF --- 1 2
Point source
Deposition Algorithm - REF --- 1 2
Dispersion Parameters - REF --- 1 2
For the Long Term Model - REF --- 1
For the Short Term Model - REF --- 1
Polar receptor network - REF --- 1

Receptors
Calculation of Source-Receptor Distances - REF --- 1 2
Rural
Dispersion Parameters - REF --- 1
Virtual Distances - REF --- 1 2

Schulman-Scire downwash algorithm - REF --- 1
Short-term dispersion model - REF --- 1
Sigma-y - REF --- 1 2
Sigma-z - REF --- 1 2
Smoothing function
For the Long Term Model - REF --- 1
Urban
Decay Term For SO2 - REF --- 1
Dispersion Parameters - REF --- 1
Virtual Distances - REF --- 1 2

Vertical dispersion parameters - REF --- 1 2 3
Vertical term - REF --- 1 2 3 4
For Gases and Small Particulates - REF --- 1
For Large Particulates - REF --- 1
For the Long Term Model - REF --- 1 2 3
For the Short Term Model - REF --- 1 2
For Uniform Vertical Mixing - REF --- 1
In Complex Terrain - REF --- 1
In Elevated Terrain - REF --- 1 2
Vertical virtual distances
For Building Downwash - REF --- 1 2
Virtual distances - REF --- 1 2 3 4 5 6
For the Long Term Model - REF --- 1 2
For Volume Sources - REF --- 1
Virtual point source - REF --- 1 2 3 4
Volume source - REF --- 1
Deposition Algorithm - REF --- 1 2
For the Long Term Model - REF --- 1
For the Short Term Model - REF --- 1

Wet deposition
For the Short Term Model - REF --- 1
Wind speed
Minimum Wind Speed For Modeling - REF --- 1
Wind speed profile - REF --- 1 2 3