As a stepping stone to this long-term goal a dispersion model has been developed which permits simulation of the dispersion of properties around and out of city canyons. This image represents two city buildings with a roadway between. The wind is blowing directly across the top of the buildings causing a vortex motion within the canyon. Carbon monoxide is being released into clean air from cars moving along the roadway. The colored surfaces in the image are isosurfaces representing carbon monoxide concentrations.
Concentrations are high near the road surface and decrease away from the road.
The carbon monoxide is seen dispersing out of the top of the canyon.