Dr. Sharad Gokhale

Professor of Environmental Engineering at the Department of Civil Engineering IIT Guwahati. His research is principally in applied meteorology and mitigation of impacts. It includes urban air quality, dispersion and chemical processes and urban environmental noise.


Tel:+91 361 258 2419 (O)

Tel:+91 361 258 4419 (R)

Fax:+91 361 258 2440 (Civil Office)

E-mail: sharadbg@iitg.ernet.in

Media news:




Ph.D. 2004. Urban Air Quality and Modelling, Indian Institute of Technology Delhi.



Research Area:

Air and noise pollution

Research updates:

The preliminary estimates of the statistical noise indicators show the distribution of noise levels along a suburban roadway in Guwahati with a honking effect.


Choudhary, A. and Gokhale, S. (2018) On-road measurements and modelling of vehicular emissions during traffic interruption and congestion events in an urban traffic corridor. Atmospheric Pollution Research.

Choudhary, A. and Gokhale, S. (2018) Evaluation of emission reduction benefits of traffic-flow management and technology upgrade in a congested urban traffic corridor. Clean Technology and Environmental Policy.



Peer reviewed international journals:

  1. Padhi, S. and Gokhale, S. (2017) Treatment of gaseous volatile compounds using a rotating biological filter. Bioresource Technology, Vol. 244 (1), 270-280.

  2. Dutta, J. and Gokhale, S. (2017) Field investigation of carbon dioxide (CO2) fluxes and organic carbon from a conserved paddy field of North-East India. Int. Soil & Water Conservation Res., Vol. 5, 325-334.

  3. Cyrille, M. A., David, M., Andre, L., Ebenezer, M., and Gokhale, S. (2017) Projecting impacts of two-wheelers on urban air quality of Douala, Cameroon. Transportation Research, Part D, Vol. 52, 49-63.

  4. Cyrille, M. A., David, M., Andre, L., Ebenezer, M., and Gokhale, S. (2017) Evaluating impacts of two-wheeler emissions on roadside air quality in the vicinity of a busy traffic intersection in Douala, Cameroon. Air Quality, Atmosphere and Health, Vol. 10(4), 521-532.

  5. Padhi, S. and Gokhale, S. (2017) Benzene biodegradation by indigenous mixed microbial culture: Kinetic modelling and process optimization. Int. Biotechnology and Biodegradation, Vol. 119, 511-519.

  6. Bhautmage, U. and Gokhale, S. (2016) Effects of moving-vehicle wakes on pollutant dispersion inside a highway road tunnel. Environmental Pollution, Vol. 218, 783-793.

  7. Choudhary, A. and Gokhale, S. (2016) Urban real-world driving traffic emissions during interruption and congestion. Transportation Research, Part D, Vol. 43, 59-70.

  8. Padhi, S. and Gokhale, S. (2016) Benzene control from waste gas streams with a sponge-medium based rotating biological contactor. Int. Biodeterioration and Biodegradation, Vol. 109, 96-103.

  9. Gokhale, S. (2016) Effects of engineered nanomaterials released into the atmosphere. J. Hazard. Toxic Radioact. Waste, Vol. 20 (1), B4015005(1)-B4015005(12).

  10. Thaker, P. and Gokhale, S. (2016) The impact of traffic-flow-patterns on air quality in urban street canyons. Environmental Pollution, Part A, Vol. 208, 161-169.

  11. Singh, N. P. and Gokhale, S. (2015) A method to estimate spatiotemporal air quality in an urban traffic corridor. Science of the Total Environment, Vol. 538,458-467.

  12. Abhijit, KV and Gokhale, S. (2015) Passive control potential of trees and on-street parked cars in reduction of air pollution exposure in urban street canyons. Environmental Pollution, Vol. 204, 99-108.

  13. Durga Ch., S. and Gokhale, S. (2015) Monitoring and assessment of O3 and PM1 in the microenvironment of a workplace. Environmental Modelling and Assessment, Vol. 20 (5), 521 - 534.

  14. Padhi, S. K. and Gokhale, S. (2014) Biological oxidation of gaseous VOCs - rotating biological contactor a promising and eco-friendly technique. The Journal of Environmental Chemical Engineering, Vol. 2(4), 2085-2102.

  15. Gokhale, S. (2012) Impacts of traffic-flows on vehicular-exhaust emissions at traffic junctions. Transportation Research – Part D Transport and Environment, Vol. 17 (1), 21-27.

  16. Gokhale, S. (2011) Traffic-flow pattern and meteorology at two distinct urban traffic junctions with impacts on air quality. Atmospheric Environment, Vol. 45(10), 1830-1840.

  17. Pandian, S, Gokhale, S and Ghoshal, AK (2011) An open-terrain line source model coupled with street-canyon effects to forecast carbon monoxide at traffic roundabout. Science of the Total Environment, Vol. 409 (6), 1145-1153.

  18. Gokhale, S and Patil, R (2010) Uncertainty analysis of PM10 and PM2.5 at non-signalized urban traffic roundabout. Atmospheric Pollution Research 1, 59-70.

  19. Pandian, S, Gokhale, S and Ghoshal, AK (2009) Evaluating effects of vehicle and traffic characteristics on vehicular exhausts emission near traffic intersections. Transportation Research, Part D, Vol. 14 D (3), 180-196.

  20. Gokhale, S, Kohajda, T and Schlink, U (2008) Source apportionment of volatile organic compounds in homes, offices, and outdoor microenvironments using chemical mass balance and genetic algorithm receptor model. Science of the Total Environment, Vol. 407 (1), 122-138.

  21. Gokhale, S and Raokhande, N (2008) Performance evaluation of air quality models for predicting PM10 and PM2.5 at urban traffic intersection during winter period. Science of the Total Environment, Vol. 394 (1), 9-24.

  22. Gokhale, S. and Pandian, S. (2007) A semi-empirical box modeling approach for the prediction of carbon monoxide at an urban traffic intersection. Atmospheric Environment, Vol. 41(36), 7940-7950.

  23. Gokhale, S. and Khare, M. (2007) A theoretical framework for episodic-urban air quality management plan (e-UAQMP), Atmospheric Environment, 41(36), 7887-7894.

  24. Gokhale, S. and Khare, M. (2007) Statistical behavior of carbon monoxide from vehicular exhausts in urban environments. Environmental Modelling and Software , Vol. 22 (4), 526-535.

  25. Gokhale, S. and Khare, M. (2007) Vehicle wake factor for heterogeneous traffic in urban environments. International Journal of Environment and Pollution, Vol. 30(1), 97-105.

  26. Gokhale, S., Rebours, A., and Pavageau, M. (2005) A performance evaluation of WinOSPM model for three streets canyons of Nantes. Environmental Monitoring & Assessment, 100 (1-3), 153-176.

  27. Gokhale, S. and Khare, M. (2005) A hybrid model for predicting the carbon monoxide from vehicular exhausts in urban environments. Atmospheric Environment , Vol. 39 (22) 4025-4040.

  28. Gokhale, S. and Khare, M. (2004) A review of deterministic, stochastic and hybrid vehicular exhausts emission models. International Journal of Transport Management , Vol. 2(2), 59-74.

  29. Gokhale, S. and Patil, R.S. (2004) Size distribution of aerosols (PM10) and Lead (Pb) at traffic intersections in Mumbai. Environmental Monitoring & Assessment , 95 (1-3), 311-324.

  30. Gokhale, S. and Patil, R.S. (2004) Modeling the size separated particulate matter (SSPM10) from vehicular exhausts at traffic intersections in Mumbai. Environmental Monitoring & Assessment , 98 (1-3), 23-40.


  1. Choudhary, A. and Gokhale, S. (2015) Using traffic volume and speed to quantify urban traffic congestion. 3rd Conference of Transportation Research Group of India (CRTG), Paper No. 448, 17-20 December 2015, Kolkata, India.

  2. Padhi, S. K. and Gokhale, S. (2015) A hybrid rotating biological filters to control VOC from waste gas streams. Int. Conf. CHEMCON 2015, 27-30 December 2015, IIT Guwahati, India.

  3. Padhi, S. K. and Gokhale, S. (2015) Optimization and modelling of growth kinetics during benzene biodegradation in batch reactors. Int. Conf. on New Horizons in Biotechnology, 22-25 November 2015, Trivandrum, India.

  4. Hazarika, B. and Gokhale, S. (2015) Secondary pollutants from VOCs in urban indoor air. National Conference on De-polluting Indian Cities, IDC Foundation, 18-19 September 2015, New Delhi.
  5. Singh, N. P. and Gokhale, S. (2015) Estimation of emission source reduction using best-fit statistical distribution of measured pollutants within an urban traffic corridor. National Conference on Challenges in Environmental Research, Indian Institute of Technology Guwahati, June 2015, India.

  6. Padhi, S. K. and Gokhale, S. (2015) Biodegradation of an indigenous microorganism in a batch reactor for gaseous VOC control. Bio Tech 2015., Int. Conf. on Advances in Biotechnology, IIT Kanpur, 13-15 March 2015.

  7. Choudhary, A. and Gokhale, S. (2015) The study of effect of speed and acceleration on auto-rickshaw exhausts emission during urban peak flow condition. Int. Conference on Sustainable Energy and Built Environment, Paper No. TR003,12-13 March 2015, VIT University Vellore, India.

  8. UKIERI (2011) Transport, land use strategies and technology interventions in urban air quality management. February 9-20, 2011, IIT Delhi, New Delhi, India

  9. DIREC2010 (2010) Delhi International Renewable Energy Conference 2010, October 27-29, Greater Noida, India.

  10. Pandian, S. and Gokhale, S. (2008) Capacity estimation of roundabout traffic intersection using alternative analytical models. Int. Congress on Environmental Research. ICER-2008, December 18-20, GOA, India.

  11. Gokhale, S. (2005) Prediction of carbon monoxide levels at urban hotspots using hybrid modeling technique. The National Level Brainstorming Workshop on Indian Urban Air Quality, 24-25 October 2005, NEERI, Nagpur, India.

  12. Bose, R. and Gokhale , S. (2004) Making Way for Public Rapid Transit in South Asia and its Impact on Energy and Environment. BAQ2004, CAI Asia conference, 6-8 December 2004, Agra, India.

  13. Khare, M., Sharma, P., Nagendra , S. and Gokhale, S. (2004) Integrating urban transportation policy: implementing air quality models. Harvard Workshop on Transport Environment, Hyderabad, 28 January 2004, India.

  14. Gokhale, S., Khare, M. and Pavageau, M. (2003) Modeling distributions of air pollutant concentrations from vehicular exhausts in urban environment: A hybrid approach. International workshop on physical modeling of flow and dispersion phenomena. PHYSMOD2003, 3-5 September 2003, Prato, Italy.

Book chapter/Report/Special issue/Editorial/Open journal:

  1. Gokhale, S. (2018) Environmental Noise Pollution. Ch. 18, Handbook of Environmental Engineering, https://doi.org/10.1002/9781119304418.ch18., Wiley online library.

  2. Gokhale, S. (2015) Behavior and fate of natural and engineered nanomaterials in atmosphere. Chapter 10 in Nanomaterials in the Environment, S. K. Brar, T. C. Zhang, M. Verma, R. Y. Suryapalli, and R. D. Tyagi. American Society of Civil Engineers (ASCE) pubs., Reston, VA, 265-291.

  3. Gokhale, S. (2012) Guest editor, A special issue on "Urban Air Pollution Exposure - Measurement, Modelling and Assessment." The Open Atmospheric Science Journal, Bentham Open, Editorial, Vol. 6, 2012, ISSN 1874-2823, pp 61-92.  Link - http://www.benthamscience.com/open/toascj/openaccess2.htm

  4. Gokhale, S. (2010) Traffic in Developing Countries - An Environmental Perspective. Traffic Safety. Chapter No – 06, Edited by Christina Ferraro. Series : Transportation Issues, Policies and R&D – Safety and Risk in Society. Nova Science Inc. ISBN: 978-1-61761-120-9.

  5. Gokhale, S. (2007) Co-guest editor, Special issue on Urban Air Pollution: Control and Management Options. International Journal of Environment and Waste Management (IJEWM), Inderscience Publishers UK, 2006-07.

  6. Bose, R.K., Mukherji, S., Gokhale, S. (2005) Energy, Environment and Mobility in Three South Asian Cities - Making Way for Public Rapid Transit:   Benefits and Opportunities. 2005, Report 2003UG21. The Energy and Resources Institute, New Delhi, India

  7. Rebours, A., Pavageau, M., Gokhale, S. (2003) A report on validation of WinOSPM air quality model for French traffic condition. May 2003. Mise en oeuvre et validation de WinOSPM (Operational Street Pollution Model) sur trois rues de Nantes. Air Pays de la Loire, E-ARs030001- ARs, Mai 2003, Nantes, FRANCE (French Version). Web address : http://www.airpl.org/pdf/Publication00136.pdf

Teaching - Theory/Lab Courses:

For Undergraduates and Graduates:

  1. CE307: Environmental Engineering - I (3-0-0:6)
  2. CE315: Environmental Engineering Laboratory (0-0-3:3)
  3. CE441: Air Pollution and Industrial Waste Management (3-0-0:6)
  4. CE661: Air Quality Modelling (3-1-0:8)
  5. CE523: Air and Noise Pollution (3-0-2:8)
  6. CE527: Design of Environmental Engineering System (0-0-2:2)
  7. CE551: Principles of Water Quality & Environmental Legislations (3-0-2:8)
  8. CE570: Air Pollution and Industrial Waste Management (3-0-0:6)
  9. CE201: Surveying (3-0-2:8)
  10. ME111: Engineering Drawing (1-0-3:6)

Research Theses:

PhD and Postdoctorates:

1. Suresh Pandian (2006-11): Traffic flow characteristics and impacts on air quality at urban roundabout junction.

2. Arti Chaudhary (2012-17): Impacts of urban traffic interruption and congestion on vehicular exhausts emissions.

3. N. Premananda Singh (2012-17): A prediction method for estimating exposure of sedentary workers to carbon monoxide along an urban traffic corridor.

4. Susant Kumar Padhi (2012-17): Control of gaseous VOCs using a sponge-medium based RBC

5. Mitali Sahu (2012-ongoing): Episodic air quality and related health impacts in urban traffic corridor.

6. Ardhendu S. Choudhary (2013-ongoing): Black carbon and its impacts on the radiative forcing of in the NE region of India.

7. Argha K Guha (2016-ongoing): Noise propagation in the buildings located along urban roadway.

8. Sameer Singh (2016-ongoing): Black carbon originated from traffic exhausts emissions in BRV region and impacts.

9. Neeldip Barman (2018-ongoing): Transportation and deposition of black carbon.

M Tech:

1. Arundeep (2018-ongoing): Dispersion of black carbon originated from traffic exhausts emissions over a complex terrain

2. Megha Chauhan (2018-ongoing): Dispersion of black carbon originated from open burning and domestic tracts over hilly region during winter

3. Manisha Das (2018-ongoing): Particulate matter related health

Foreign Interns:

1.  Buddhi Sapkota (2015): Indoor air dispersion simulation using CFD. Tribhuvan University, Nepal.

2. Cyrille Mezoueadiang (2015): Air quality modeling at traffic intersections. Douala University, Cameroon.

Post doctorates:

1.  Dr. Jayashree Dutta (2015 -2017): Experimental investigation of GHG fluxes from conserved agricultural field with modeling.

2. Dr. Anirban Chaudhary (2017 -2019): Investigation of honking noise effects using measurements and modeling in urban traffic corridor.


Research and Development Grants:

1. Funding agency: Ministry of Earth Science, GoI, Project: Environmental noise in urban centers and mitigations., Aim: to investigate environmental noise propagation in urban traffic corridors, study impact of environmental factors and investigate mitigations., Year: 2016 - ongoing.

2. Funding agency: DST, GoI, Project: Urban black carbon and mitigations., Aim: to investigate the seasonal levels of black carbon in urban areas, to study the impacts of traffic, contribution to radiative forcing in the N-E region and investigate mitigations., Year: 2015-ongoing

3. Funding agency: Institution of Engineers, India (IEI), Project: Episodic air quality in urban traffic corridors., Aim: to identify episodic conditions on urban roads, study traffic flow patterns and characteristics during the identified episodic conditions, and identify the parameters responsible., Year: 2014-18.

4. Funding agency: Dept. of Science & Technology, India, Project: Air quality model evaluation for regulatory compliance in India., Aim: to examine the impacts of traffic operations and characteristics on the emissions of CO, NO2 and PM at a signalized intersection and a conventional two-lane roundabout; the impacts of traffic pattern and meteorology on the levels and locations of higher concentrations of pollutant CO, NO2 and PM in a response to varying flow conditions and emissions resulted from the traffic operations., Year: 2007-11.

5. Client: Amrit-Bio Pvt. India Ltd. Kolkata, Project: EIA of biomass power plant., Aim: to assess the environmental impacts of 10 MW Biomass based power plant at Baghjap in the Mayong Circle of Morigaon District, Assam., Year: 2008-09.

Professional membership:

  • Fellow, FIE - Institution of Engineers, India.
  • Member, ASCE - American Society of Civil Engineers.
  • Member, ACS - American Chemical Society.
  • Member, IUT - Institute of Urban Transport, India.
  • Member, IWWA - Institute of Water Works Association, India.
  • Member, IMS - Indian Meteorological Society.


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