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DISPER software: Air pollution map produced by three different stacks (XZ-plane)
Canarina software for analysis of air pollution in environment: air pollution control, environmental engineering, environmental consultancy service, environment simulation, environmental modeling and environmental impact assessment. More INFO: ISC 116 velocity
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DISPER: Air pollution dispersion ˇ DISPER - Solutions - Data - Algorithms - Emissions - Graphs - ISC3 (VOL. 2)
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1.6 ISC TREATMENT OF INTERMEDIATE TERRAIN
In the ISC Short Term model,
intermediate terrain is defined as terrain that exceeds the height of the
release, but is below the plume centerline height. The plume centerline height used to define
whether a given receptor is on intermediate terrain is the distance-dependent
plume height calculated for the complex terrain algorithm, before the terrain
adjustment (Section 1.5.6.2) is applied.
If the plume height is equal
to or exceeds the terrain height, then that receptor is defined as complex
terrain for that hour and that source, and the concentration is based on the
complex terrain screening algorithm only.
If the terrain height is below the plume height but exceeds the physical
release height, then that receptor is defined as intermediate terrain for that
hour and source. For intermediate
terrain receptors, concentrations from both the simple terrain algorithm and
the complex terrain algorithm are obtained and the higher of the two
concentrations is used for that hour and that source. If the terrain height is less than or equal
to the physical release height, then that receptor is defined as simple
terrain, and the concentration is based on the simple terrain algorithm only.
