Sachchida Nand Tripathi

PhD (Reading University, UK)

Email: snt[AT]iitk.ac.in

Office Phone: 0512-259-7845

Professor & Head, Department of Civil Engineering

Specialization

Atmospheric Science

Research Interest

Aerosol Science and Technology, Low-Cost Sensors for Air Quality Monitoring, Air pollution source identification in near real-time, Aerosol-Land Use-Rainfall-Climate coupling, Large-Scale Chamber Aerosol Experiments for Reactor Safety.

Education

PhD, (Environmental Engineering), University of Reading, UK (2000)
M.Tech, (Environmental Engineering), MNIT-Allahabad (1994)
B.Tech, (Civil Engineering), IIT-BHU (1992)

Website(s)

Homepage

CV

+ - Teaching Area Click to collapse

Air Pollution and its Control
Earth and Environment
Atmospheric Physics and Chemistry
Fate and Transport of Contaminants in Natural Systems
Environmental Quality and Pollution
Computational Methods in Engineering
Advanced Mathematics for Civil Engineers
Modeling of Natural Systems

+ - Recent Publications Click to collapse

Trent, M, R. Dreibelbis, A. Bir, S.N. Tripathi et al., 2018, Access to household water quality information leads to safer water: a cluster randomized controlled trial in India, Environmental Science & Technology, DOI: 10.1021/acs.est.8b00035, 2018.
Sarangi, C., S. N. Tripathi et al., 2018, Aerosol and urban land use effect on rainfall around cities in Indo-Gangetic Basin from observations and cloud resolving model simulations, Journal of Geophysical Research – Atmospheres, 123, 3645-3667.
George, G, C. Sarangi, S.N. Tripathi, T. Chakraborty and A. Turner, 2018, Vertical Structure and Radiative Forcing of Monsoon Clouds over Kanpur during the 2016 INCOMPASS field campaign, Journal of Geophysical Research – Atmospheres, 123,doi: 10.1002/2017JD027759.
Chakraborty, A., S.N. Tripathi et al., 2018, Realtime chemical characterization of post monsoon organic aerosols in a polluted urban city: sources, composition, and comparison with other seasons, Environmental Pollution, 232, 310-321.
Shamjad, P.M., S.N. Tripathi et al., 2018, Absorbing refractive index and direct radiative forcing of atmospheric brown carbon over Gangetic Plain, ACS Earth and Space Chemistry, 2, 31-37.
Mhawish, A., T. Banerjee, D.M. Broday, Amit. Misra and S.N. Tripathi, 2017, Evaluation of MODIS collection 6 aerosol retrieval algorithms over Indo-Gangetic Plain: Implications of aerosols types and mass loading, Remote Sensing of Environment, 201, 297-313.
Holben, B.N., S.N. Tripathi et al., 2017, An overview of meso-scale aerosol processes, comparison and validation studies from DRAGON networks, Atmospheric Chemistry and Physics, doi:10.5194/acp-2016-1182.
Thamban, N., S.N. Tripathi et al., 2017, Internally mixed black carbon in the Indo-Gangetic Plain and its effect on absorption enhancement, Atmospheric Research, 197, 211-223.
Lal, S., S. Venkataramani, S.N. Tripathi et al., 2017, Loss of crop yields in India due to surface ozone: An estimation based on a network of observations, Environmental Science and Pollution Research, DOI 10.1007/s11356-017-9729-3.
Mishra, S.K., N. Saha, S.N. Tripathi et al., 2017, Morphology, mineralogy and mixing of individual atmospheric particles over Kanpur (IGP): Relevance of homogeneous equivalent sphere approximation in radiative models, MAPAN-Journal of Metrology Society of India, DOI 10.1007/s12647-017-0215-7.
Satish, R., P.M. Shamjad, Thamban Navaneeth, S.N. Tripathi and N. Rastogi, 2017, Temporal characteristics of brown carbon over the central Indo-Gangetic Plain, Environmental Science & Technology, 51(12), 6765–6772.
Chowdhury, S., S. Dey, S.N. Tripathi et al., 2017, "Traffic intervention" policy fails to mitigate air pollution in megacity Delhi, Environmental Science and Policy, 74, 8-13.

+ - Research Group Click to collapse

Current Ph.D. Students
Ashutosh Shukla	Cont.
Gaurav Mishra (Jointly with Dr. Ashok Khanna, ME	Cont.
Anubhav Dwivedi (Jointly with Dr. Naveen Tiwari, CHE)	Cont.
Manish Joshi (Jointly with BARC)	Cont.
Kunal Ghosh	Cont.	Effect of charge on microphysical processes in atmosphere
Navaneeth M. Thamban	Cont.
Anil Kumar Mandaria (Jointly with Dr. Tarun Gupta, CE)	Cont.
Sidyant Kumar Rao (Jointly with Dr. Sanjay Kumar, AE)	Cont.
Manish Kumar (Jointly with Shikha Prasad, ME)	Cont.
Vipul Lalchandani	Cont.
Suneeti Mishra	Cont.
Current M.Tech. Students
Saad Ahmad	Cont.

Past Members

Ph.D. Thesis Student

Shamjad P.M.	2017	Impact of carbonaceous aerosol absorption and mixing state on direct radiative forcing in Kanpur-India. Current position: Postdoctoral Fellow, Aarhus University, Denmark Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Chandan Sarangi	2017	Understanding aerosolsurfacecloudrainfall interactions within Indian summer monsoon region. Current position: Postdoctoral Fellow, Pacific Northwest National Laboratory, Washington, USA Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abhishek Chakraborty	2016	Fog and organic aerosols interactions: processing, sources, and composition. Current position: Postdoctoral Fellow, Douai School of Engineering, Douai, France Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Deepika Bhattu	2016	Effect of aerosol size, chemical composition, mixing state and volatility on cloud condensation nuclei activity in the ambient atmosphere. Current position: Postdoctoral Fellow, Paul Scherrer Institute, Switzerland Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Chiranjib Chaudhari	2015	Characteristics of historical climate change over Indo- Gangetic basic: Observational analysis and numirical modeling. Current position: Catastrophe Modeler at Risk Management Solution, New Delhi Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Daya Shankar Kaul	2014	Understanding the formation of organic aerosol in urban environment during foggy and nonfoggy episodes. Current position: Postdoctoral Fellow, Hong Kong, China Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
J. Jaidevi	2012	Effects of fine particulate matter on human health and climate. Current position: Assistant Professor, IITRAM, Ahmedabad Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Sumit Kumar Mishra	2011	Numerical estimation of optical properties of pure and polluted mineral dust particle. Current Position: Scientist, Radio and Atmospheric Sciences Division, National Physical Laboratory, New Delhi Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Sagnik Dey	2008	Aerosol radiative effects in Kanpur in the Indo-Gangetic basin, northern India. Current position: Assistant Professor, Dept. of CAS, I.I.T. Delhi Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

M.Tech Thesis students

Mithun Krishnan	2017	Seasonal dynamics of surface energy balance over a semi-natural grassland in central Indo-Gangetic Basin. Current position: Pursuing PhD under my guidance in Department of Civil Engineering, IIT Kanpur
Geet George	2017	Characterisation of cloud vertical structure (CVS) and cloud radiative forcing (CRF) over Kanpur. Current position: PhD Student, Max Planck Institute for Meteorology, Hamburg, Germany
Bhuvana Joshi	2016	Real time size resolved analysis of organics in Kanpur city: A comparative study between fog and no-fog periods. Current position: Research Scholar, under my guidance in Department of Civil Engineering, IIT Kanpur
Kuntamukkala Pavan Kumar	2016	Black carbon aerosol microphysical properties variation and electron microscopy study of PM205 in Kanpur. Current position:
Bharath Kumar Dual B. Tech - M. Tech	2015	Source apportionment of sub micron aerosol over Kanpur. Current position: Business Analyst, ZS Associates, Gurgaon
Karn Vohra Dual B. Tech - M. Tech	2015	A chamber study to understand aerosol deposition phenomena. Current position: Gurgaon
Tirthankar Chakraborty	2015	Understanding urban micrometeorology and its impact on the heat island of greater Kanpur. Current Position: Ph.D. Student, Yale University, USA
Kundan Kumar	2015	Aerosol direct radiative forcing over Indo-Gangetic basin during pre-mansoon season using WRF-CHEM. Current Position: Assistant Executive Engineer, Office of the Panchayat Raj Superintendent Engineer, Panchayat Raj Circle Adilabad, Tilangana
Vipul Lalchandani	2014	The need for site-, season- and instrument-specific calibrations of a photo-reference method for determining aerosol Black Carbon concentrations and examining color signal of Organic carbon particles. Current Position: Pursuing PhD under my guidance in Department of Civil Engineering, IIT Kanpur
Amit Sharma	2014	Quantifying health benefits of reducing PM2.5 & ozone concentration using WRF-CHEM model. Current position: Ahmedabad
Alabhya Mishra Dual B. Tech - M. Tech	2014	Electrical properties of Titan and Earth atmospheres. Current position: Bangalore
Arun Yadav Dual B. Tech - M. Tech	2013	An evaluation of WRF-Chem model over the Indian Domain Current position: Flipkart, Bangalore
Anubhav Dwivedi	2013	Investigation of activation kinetics of laboratory generated and ambient particles Current position: Pursuing PhD under my guidance in Department of Civil Engineering, IIT Kanpur
Rosalin Dalai	2013	Role of aerosol type and mixing state on CCN activity Current position: IIT Bhubneshwar
Akhilesh Rawal Dual B. Tech - M. Tech	2012	Study of ion-aerosol near-cloud mechanism to explain cosmic ray-cloud-climate conundrum Current position: in New Delhi
Shamjad P.M.	2011	Hygroscopicity, mixing state and enhanced absorption of aerosols Current position: Pursuing PhD under my guidance in Department of Civil Engineering, IIT Kanpur
Priya Choudhry	2011	Validation of MODIS-retrieved AOD over Indo-Gangetic Plain Current position: Evalueserve, New Delhi
Monika Srivastava	2011	Aircraft-based CCN Closure Current position: BBD University, Lucknow
Pawan Kumar Bharti	2010	A study of inter and intra variation seasonal of surface Cloud Condensation Nuclei and chemical closure in Kanpur Current position: SIDBI, Ludhiana
Vishnu Patidar	2009	First surface, spatial and vertical measurements of Cloud Condensation Nuclei (CCN)over Indian CTCZ region. Current position: Environmental Engineer
Jariwala Chinmay G.	2009	An observational and laboratory study on the effects of Cloud Condensation Nuclei and black carbon aerosol on fog persistence. Current position: Environmental Engineer, Dar AL-Handasah, Pune
Vivek Pratap Singh	2008	An experimental investigation of the effects of environmental and fog condensationnuclei parameters on rate of fog dissipation. Current position: Engineer, Manali
Sanjay Prakash Baxla	2008	A study of ambient ultra fine aerosols using SMPS.
Anirban Roy	2008	Measurement and simulation of particulate aerosols. Current Position: Ph.D. Student, Carnegi Mellon University, USA
Anilkumar D. Vanga	2007	A numerical study of new particle formation in cirrus cloud. Current Position: Engineer, Jones LangLaSalle, Mumbai
Sudip Chakraborty	2006	Long term changes in surface and columnar water vapor over North India. Current Position: Ph.D. Student, The University of Texas at Austin, USA
Abani Patnaik	2006	Climatology of cloud and aerosol over the Indian subcontinent and adjoining oceans. Current Position: Offshore Structural Engineer, L&T, Mumbai
Roma Srivastava	2006	Study of trace gas concentration over Kanpur region. Current Position: Lecturer, Hindustan College of Engineering, Agra. Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Parul Sharma	2006	Study of aerosol chemical composition over Kanpur region. Current Position: Software Engineer, WIPRO, Bangalore, Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tanveer Ahmed	2005	Charging of radioactive aerosols containment wall of pressurized water reactor. Current Position: Post-Doctoral Fellow, Scripps Institute of Oceanography, San Diego, USA
Nagesh Chinnam	2005	Analysis of ambient particles by high volume sampler and PM10
Shyam Kishor	2005	Investigation into seasonal and diurnal formation of atmospheric nitrate.

Project Employees

Amit Misra	Post Doc	Study of vertical distribution of aerosol from satellite and ground based Lidar.
Shilpa Shirodkar	Post doc
Dinesh Nath	Post doc
Ravi Sahu	Post doc
Kuldeep Dixit	Junior Research Fellow
Purushottam Kumar	Junior Research Fellow
Satya Brat Tiwari	Junior Research Fellow	Cloud structure and forcing; Land surface interactions.
Amit Vishvakarma	Project Associate
Harish C. Vishwakarma	Assistant Project Manager	AERONET and MPLNET site maintenance, Technical work and official work for Projects.
Harishankar	Sr. Project Mechanic	Technical work and official work for Project and Lab.

+ - Professional Experience Click to collapse

Nov 2014-Oct 2017 Coordinator, Centre for Environmental Science & Engineering, IIT Kanpur
Nov 2014 onwards Adjunct Professor, Department of Earth Sciences, IIT Kanpur
June-July 2014 Visiting Professor, School of Civil Environmental Engineering,Georgia Institute of Technology, USA.
May-July 2012 Professor, Laboratoire de Physique etChimie de Environnement, University of Orleans, France.
April 2012-till date Professor, Department of Civil Engineering and Centre for Environmental Science & Engineering, Indian Institute of Technology-Kanpur, Kanpur, India.
Aug 2009-July 2010 Senior Fellow, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA.
Jan 2008-Mar 2012 Associate Professor, Department of Civil Engineering and Centre for Environmental Science & Engineering, Indian Institute of Technology-Kanpur, Kanpur, India.
May-July 2006 Visiting Associate Professor, Centre for Climate System Research, The University of Tokyo, Japan.
June 2004 Visiting Researcher, NOAA Aeronomy Laboratory, Boulder, USA.
July 2003-Dec 2007 Assistant Professor, Department of Civil Engineering, Indian Institute of Technology-Kanpur, Kanpur.
Jan 2002-July 2003 Post Doctoral Research Assistant, Atmospheric, Oceanic and Planetary Physics, Department of Physics, University of Oxford, UK.
Dec 2000-Dec 2001 Visiting Scientist, Environmental Assessment Division, Bhabha Atomic Research Centre, Mumbai, India.

+ - Awards & Fellowships Click to collapse

UP Ratna Award, Government of Uttar Pradesh (2018)
Distinguished Alumnus Award, Banaras Hindu University (2015)
Elected Fellow, The National Academy of Sciences, India (2015)
Rajeeva and Sangeeta Lahri Chair Professor (2015-2018)
Elected Fellow, Indian National Academy of Engineering (2015)
Shanti Swarup Bhatnagar Prize in Earth, Atmosphere, Ocean and Planetary Sciences (2014)
Sir M. Visvesaraya Research Fellowship for excellence in teaching and Research (2009-2012)
NASA Senior Fellowship (2009-2010)
NASI-SCOPUS Young Scientist Award for highest citation in Earth Sciences (2009)
All India Council of Technical Education, Young Teacher Career Award (2003)
Taiwan Aerosol Society award to attend the above conference (2002)
Locky award to attend Sixth international aerosol conference in Taiwan (2002)
Royal Meteorological Society grant to attend Int. aerosol conference in Taiwan (2002)
Aerosol Society Bursary to attend European Aerosol Conference (2000)
Lech award in the final year of Ph.D. (2000)
FELIX award during Ph.D. (Fee waiver and maintenance allowance) (1996-2000)

+ - Contact Information Click to collapse

Office

FB-314,
Departement of Civil Engineering
IIT Kanpur,
Kanpur 208016

Office Phone: 0512-259-7845 (O)

Email: snt[AT]iitk.ac.in

+ - Keywords Click to collapse

Aerosol Direct Effects, Aerosol Indirect Effects, Laboratory Simulation of Fog, Planetary Atmospheres