IMMIS^cpb – street canyon modelling

IMMIS^cpb calculates time series of concentrations of pollutants caused by road traffic in street canyons based on easily available input data. IMMIS^cpb models street canyons as 2.5-dimensional cross sections and handles a wide variety of canyon geometries with gaps between buildings, differing building heights on both sides and up to 12 lanes per section with varying emission or traffic situations. IMMIS^cpb includes a physicochemical model based on the photochemical equilibrium to calculate total NO₂ concentrations.

Features

• built-in emission model IMMIS^em,h

• traffic emissions modelled on a per-lane basis

• calculation of hourly values and time series

• arbitrary calculation points in cross section

• NO/NO₂ conversion model

• fast calculation

• GIS user interface