Answer:CALINE4 Model and Geographical Information System were used for
the present study to predict the CO concentrations and prepare thematic
maps for the study area.
CALINE4 is a latest model that predicts the concentration of carbon
monoxide impacts near the roadways. The California Department of
Transformation (CALTRANS) developed the model and its purpose is to help
planners protect public health from the adverse effects of carbon monoxide.
The model predictions along with the aid of GIS based model help to arrive at
air shed levels of carbon monoxide. CALINE4 is a simple line source
Gaussian plume dispersion model. The user defines the proposed roadway
geometry, worst-case meteorological parameters, anticipated traffic volumes
and receptor positions to predict the concentrations of pollutant.
CALINE4 is graphical with windows based user interface, designed to
ease data entry and increase the online help capabilities. The model was
developed for predicting the concentrations of relatively inert pollutants such
as carbon monoxide and it is now used for several other pollutants like NO2
and SPM. The model is based on fine tuned Gaussian diffusion equation and
it employs mixing zone concept to characterize the pollutant dispersion over
the roadways. Given the exhaust emission concentrations, meteorology and
site geometry, the model can predict the concentration of pollutants for any experimentation
Explanation:
