Performance evaluation of gaussian based line source models at urban roadways in the bangalore city

Shiva Nagendra1, Megha Prakash2, Renny Monilal2, Mukesh Khare3

1 Faculty of Environmental Engineering
2 Department of Civil Engineering, M. S. Ramaiah Institute of Technology, M. S. Ramaiah Nagar, Bangalore 560 054, Karnataka, India,
3 Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi110 016, India


This paper presents a comparative evaluation of two Gaussian based line source models-CALINE 4 (Benson, 1989) and general finite line source model-GFLSM (Luhar and Patil, 1989). The observed carbon monoxide (CO) concentration data from June, 2003 to February, 2004, during the working hours i.e. 8 AM to 6 PM at two busiest traffic intersections in the Bangalore city, have been compared with model predictions. The results indicate a reasonably satisfactory performance of the both models. The limitations of CALINE 4 and GFLSM models are also discussed.


urban air pollution; carbon monoxide (CO); traffic characteristic; meteorology; line source models

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