Abstract
Vehicular dispersion models, particularly highway dispersion models are used worldwide, including India, for assessment and management of air quality along the major roads/highways. However, dispersion of vehicular pollutants is influenced by various factors such as traffic, receptors and land use along with meteorological factors. In the present study, CALINE4, a Gaussian-based vehicular pollution dispersion model has been used in Delhi, along Ring Road Corridor near Indraprastha Park. Sensitivity analysis of CALINE4 model has been carried out for identification and quantification of meteorological parameters, viz. wind speed, wind direction, mixing height and P–G stability class influencing the model’s output. These input parameters in the model were systematically varied for assessing their influence on model’s output, i.e. predicted concentrations. The study revealed that wind speed and wind directions have significant impact on dispersion of vehicular pollutants as compared to mixing height and stability class.
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Acknowledgements
The authors are thankful to Director, CSIR-CRRI for kindly permitting to publish the present paper. Rajni Dhyani is thankful to CSIR for providing financial assistance through CSIR-Senior Research Fellowship.
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Dhyani, R., Sharma, N. (2018). Meteorological Factors Influencing Dispersion of Vehicular Pollution in a Typical Highway Condition. In: Singh, V., Yadav, S., Yadava, R. (eds) Environmental Pollution. Water Science and Technology Library, vol 77. Springer, Singapore. https://doi.org/10.1007/978-981-10-5792-2_6
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