Performance evaluation of CALINE3, CAL3QHC and PART5 in predicting lead concentration in the atmosphere over Delhi

Prediction of ground level lead concentration was made at five traffic intersections in Delhi, India, by the two highway models, viz., CALINE3, CAL3QHC and one particulate emission factor model PART5, where lead was actually monitored. The predicted values were compared with the monitored data at all the five monitoring sites. The CAL3QHC was found to be most suitable for the predictions at the signalized intersections.