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Sachchida Nand Tripathi
PhD (Reading University, UK)
Professor, Department of Civil Engineering
Research Interest
Climate Issues, Climate Modelling, Environment, Air Pollution
Office
FB-314,
Departement of Civil Engineering
IIT Kanpur,
Kanpur 208016
Specialization
Air Quality, Climate Change
Education
PhD, (Environmental Engineering), University of Reading, UK (2000)
M.Tech, (Environmental Engineering), MNIT-Allahabad (1995)
B.Tech, (Civil Engineering), IIT-BHU (1992)
Teaching Area
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
Selected Publications
Talukdar, S., S.N. Tripathi et al., 2021, Air Pollution in New Delhi during Late Winter: An Overview of a Group of Campaign Studies Focusing on Composition and Sources, Atmosphere, 12, 1432, DOI: 10.3390/atmos12111432.
Ginn, O., S.N. Tripathi et al., 2021, Detection and quantification of enteric pathogens in aerosols near open wastewater canals in cities with poor sanitation, Environmental Science and Technology, 55, 14758-14771, DOI: 10.1101/2021.02.14.21251650.
Khattri, P., S.N. Tripathi et al., 2021, Aerosol Loading and Radiation Budget Perturbations in Densely Populated and Highly Polluted Indo-Gangetic Plain by COVI D-19: Influences on Cloud Properties and Air Temperature, Geophysical Research Letters, 48, DOI: 10.1029/2021GL093796.
Jha, S.K., Mohit Kumar, S.N. Tripathi, et al., 2021, Domain adaptation based deep calibration of low-cost PM2.5 sensors, IEEE Sensor Journal, DOI: 10.1109/JSEN.2021.3118454.
Thamban, N., S.N. Tripathi et al., 2021, Evolution of size and composition of fine particulate matter in the Delhi megacity during later winter, Atmospheric Environment, 207, 118752, DOI: 10.1016/j.atmosenv.2021.118752
Niranjan, R., K.P. Mishra, S.N. Tripathi and A.K. Thakur, 2021, Proliferation of lung Epithelial cells is regulated by the mechanisms of autophagy upon exposure of soots, Frontiers in Cell and Developmental Biology, 9:662597, DOI: 10.3389/fcell.2021.662597.
Shukla, A.K., V. Lalchandani, S.N. Tripathi et al., 2021, Real-time quantification and source apportionment of fine particulate matter including organics and elements in Delhi during summertime, Atmospheric Environment, 261, 118598, DOI: 10.1016/j.atmosenv.2021.118598.
Rastogi, N., Rangu Satish, S.N. Tripathi et al., 2021, Diurnal variability in the spectral characteristics and sources of water-soluble brown carbon aerosols over Delhi, Science of the Total Environment, 794, 148589, DOI: 10.1016/j.scitotenv.2021.148589.
Mishra, G., S.N. Tripathi et al., 2021, Interaction of cesium bound fission product compounds (CsI and CsOH) with abundant inorganic compounds of atmosphere: Effect on hygroscopic growth properties, Journal of Hazardous Materials, 418, 126356, DOI: 10.1016/j.jhazmat.2021.126356.
Ghosh K., S.N. Tripathi et al., 2021, Effect of charge on aerosol microphysics of particles emitted from a hot wire generator: Theory and experiments, Aerosol Science & Technology, DOI: 10.1080/02786826.2021.1931011.
Awards & Fellowships
Fellow, Institute of Advanced Sustainability Studies, Potsdam, Germany, 2021-2022
J C Bose National Fellow, awarded by SERB, Department of Science & Technology, 2021-26
Arjun Dev Joneja Faculty Chair, IIT-Kanpur, 2021-24
Elected Fellow, Indian National Science Academy (2020)
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)
Professional Experience
Nov 2019 onwardsAdjunct Professor, Centre of Excellence for Research on Clean Air (CERCA), Indian Institute of Technology-Delhi, Delhi, IndiaAugust 2018 onwardsHigher Administrative Grade Professor (HAG) Professor, Civil Engineering, Indian Institute of Technology-Kanpur, Kanpur, IndiaJune 2018–May 2021Head, Department of Civil Engineering, Indian Institute of Technology-Kanpur, Kanpur, IndiaDec 2015Visiting Professor, School of Civil Environmental Engineering, Georgia Institute of Technology, USA.
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.
Additional information
Prof. Sachchida Nand Tripathi is the inaugural Dean of Kotak School of Sustainability at IIT Kanpur and Professor in the Department of Civil Engineering and the Department of Sustainable Energy Engineering. He currently also holds the Sir M. Visvesvaraya Chair Professorship at the institute.
He obtained his BTech from IIT BHU in Civil Engineering in 1992, MTech in Environmental Engineering from MNIT-Allahabad in 1995 and PhD in Atmospheric Physics from University of Reading, UK in 2001. After a brief stint of post-doctoral research at Bhabha Atomic Research Centre and University of Oxford, Prof. Tripathi joined IIT Kanpur as faculty in 2003.
In the past decade, Prof Tripathi has undertaken seminal work in developing state-of-the-art air quality monitoring and management technologies in India. He is credited with implementing the largest sensor-based air quality network in India, which has resulted in several cities of India starting to adopt this technology to improve decision making. His work has directly impacted policy making at the national level, while continuing to guide over 20 PhD thesis and mentored several successful startups who have gone on to become market leaders.
Prof Tripathi’s broad area of work in atmospheric sciences includes aerosol-induced cloud invigoration effect, regional climate changes, AI/ML-enabled dynamic hyper-local source apportionment and low-cost sensor-based air quality monitoring. He is leading the Government of India approved Centre of Excellence for Air Quality Monitoring technologies (ATMAN), which has already developed new hardware and AI/ML-based analytical techniques which are being used by several states and cities of India.
In October 2024, Prof Tripathi successfully led a consortium of over 20 faculty members from 4 Institutes and 5 large industry partners to be selected for the first ever Government of India-funded “Artificial Intelligence Centre of Excellence (AI CoE) for Sustainable Cities” whose initial mandate has been focused on bringing AI-technologies to energy, air quality, urban mobility and sustainable technologies for waste management. Prof Tripathi is the Project Director of the AI CoE for Sustainable Cities and is engaged in driving the research as well as the impact of these technologies in Indian cities. The team led by Prof Tripathi is developing AI-technologies for optimizing household energy demands in a city of 18 million residents, building real-time air quality monitoring and policy evaluation technologies for air pollution mitigation actions at the city and national level, digital twins for reducing vehicular emissions and improving public transit systems and Drone and vision-based AI-technologies for waste management in Indian cities.
In recognition of his significant contributions, Prof. Tripathi has been honoured with numerous awards in Physical Science as well as in Engineering. He is the recipient of Shanti Swarup Bhatnagar Award, J C Bose National Fellowship and Infosys Prize 2023 in Engineering and Computer Science. He is an elected fellow of the Indian National Science Academy (INSA), Indian National Academy of Engineering (INAE) and National Academy of Sciences of India (NASI), and recipient of the Distinguished Alumnus award of Banaras Hindu University.
For more information please visit: https://home.iitk.ac.in/~snt/.
Research Group
Current Ph.D. Students
Ashutosh Shukla | Cont. | Source apportionment using UMR and PMF and network analysis | ||
Sidyant Kumar Rao (Jointly with Dr. Sanjay Kumar, AE) | Cont. | Study of shock wave and droplet interaction | ||
Manish Kumar | Cont. | Study of Aerosol deposition in piping system during severe nuclear accident and its validation with ASTEC | ||
Vipul Lalchandani | Cont. | Vipul Lalchandani Cont. Chemical characterization of particulate matter, and understanding organic aerosol sources and evolution at downwind location of Delhi during winter season | ||
Suneeti Mishra | Cont. | Aerosol size distribution and chemical analysis in Indian cities | ||
Mithun Krishnan K.V. | Cont. | Seasonal and annual variations of surface energy fluxes, parameters and it’s modeling using weather research forecast models over Indo-Gangetic basin | ||
Himadri Sekhar Bhowmik | Cont. | Chemical characterization and source appointment of aerosols using real time instruments | ||
Vaishali Jain | Cont. | Chemical characterization and source appointment of aerosols using real-time instruments | ||
Current M.Tech. Students
Parmesh Lawani | Cont. | Calibration of low cost sensor |
Himanshu Patel | Cont. | Source Apportionment |
Ravi Prakash Maurya | Cont. | WRF-Chem Modelling |
Sant Kumar Jha | Cont. | WRF-Chem Modelling |
Project Members
Veerendra Sahu | Post Doc Fellow | Air quality monitoring using low cost sensor of Delhi. |
Sandeep Madhwal | Post Doc Fellow | Air quality monitoring using low cost sensor in Lucknow |
Mohit Kumar | Post Doc Fellow | Deep learning based calibration of air quality sensors |
Vishnu Murari | Post Doc Fellow | Identification of aerosol source at different locations in India |
Shamitaksha Talukdar | Post Doc Fellow | Source apportionment study in Delhi |
P. Pranav Kumar | Project Associate | Calibration of air quality sensors |
Amit Vishvakarma | Project Associate | Calibration of air quality sensors |
Ravi Sahu | Post Doc | |
Harish C. Vishwakarma | Assistant Project Manager | AERONET and MPLNET site maintenance, Technical work and official work for Projects. |
Hari Shankar | Sr. Project Mechanic | Technical work and official work for Project and Lab. |
Past Members
Ph.D. Thesis Student
Gaurav Mishra | 2021 | Growth characteristics of cesium compound aerosols under various saturation conditions. |
Kunal Ghosh | 2021 | Role of ion in aerosol microphysical processes (modeling and experimental studies). |
Navaneeth M.Thamban | 2021 | Evolution of size, composition and mixing state of carbonaceous aerosols in Indo-Gangetic Plain. |
Anil Kumar Mandaria | 2021 | Impact of ambient relative humidity on the growth and evolution of organic aerosol. |
Anubhav Dwivedi (Jointly with Dr. Naveen Tiwari, CHE) | 2020 | Aerosol nucleation in mixing chamber under various flow conditions |
Manish Joshi | 2018 | Formation and evolution characteristics of nuclei mode particles in dense atmospheric and confined aerosol environments. |
Shamjad P.M. | 2017 | Impact of carbonaceous aerosol absorption and mixing state on direct radiative forcing in Kanpur-India. |
Chandan Sarangi | 2017 | Understanding aerosolsurfacecloudrainfall interactions within Indian summer monsoon region. |
Abhishek Chakraborty | 2016 | Fog and organic aerosols interactions: processing, sources, and composition. |
Deepika Bhattu | 2016 | Effect of aerosol size, chemical composition, mixing state and volatility on cloud condensation nuclei activity in the ambient atmosphere. |
Chiranjib Chaudhari | 2015 | Characteristics of historical climate change over Indo- Gangetic basic: Observational analysis and numirical modeling. |
2014 | Understanding the formation of organic aerosol in urban environment during foggy and nonfoggy episodes. | |
J. Jaidevi | 2012 | Effects of fine particulate matter on human health and climate. |
Sumit Kumar Mishra | 2011 | Numerical estimation of optical properties of pure and polluted mineral dust particle. |
Sagnik Dey | 2008 | Aerosol radiative effects in Kanpur in the Indo-Gangetic basin, northern India. |
M.Tech Thesis students
Saurabh Kukreti | 2020 | Impact of variability in initial and boundary conditions of meteorology on the simulated particulate matter concentrations over Delhi during winters using WRF-Chem. |
Pratapaditya Ghosh | 2020 | Understanding the non-local and local contributions during a high PM2.5 loading winter episode over the megacity of Delhi using WRF-Chem |
Shubham Naresh | 2019 | Spatial and temporal variability in ionic and metal composition of PM2.5, across five sites of Gangetic plain; seasonality in secondary inorganic aerosol and preliminary source apportionment. |
Himadri Sekhar Bhowmik | 2019 | Inter and Intra seasonality in carbonaceous species (EC, OC) of PM2.5 aerosol over five sites of Indo-Gangetic plain, preliminary source apportionment and case study on multi-day regional SOA formation during winter at Faridabad. |
Saad Ahmed | 2018 | Application of microwave radiometer in nowcasting of convective activity. |
Mithun Krishnan | 2017 | Seasonal dynamics of surface energy balance over a semi-natural grassland in central Indo-Gangetic Basin. |
Geet George | 2017 | Characterisation of cloud vertical structure (CVS) and cloud radiative forcing (CRF) over Kanpur. |
Bhuvana Joshi | 2016 | Real time size resolved analysis of organics in Kanpur city: A comparative study between fog and no-fog periods. |
Kuntamukkala Pavan Kumar | 2016 | Black carbon aerosol microphysical properties variation and electron microscopy study of PM205 in Kanpur. |
Bharath Kumar | 2015 | Source apportionment of sub micron aerosol over Kanpur. |
Karn Vohra | 2015 | A chamber study to understand aerosol deposition phenomena. |
Tirthankar Chakraborty | 2015 | Understanding urban micrometeorology and its impact on the heat island of greater Kanpur. |
Kundan Kumar | 2015 | Aerosol direct radiative forcing over Indo-Gangetic basin during pre-mansoon season using WRF-CHEM. |
Vipul Lalchandani | 2014 | The need for site-, season- and instrument-specific calibrations of a |
Amit Sharma | 2014 | Quantifying health benefits of reducing PM2.5 & ozone concentration using WRF-CHEM model. |
Alabhya Mishra | 2014 | Electrical properties of Titan and Earth atmospheres. |
Arun Yadav | 2013 | An evaluation of WRF-Chem model over the Indian Domain |
Anubhav Dwivedi | 2013 | Investigation of activation kinetics of laboratory generated and ambient particles |
Rosalin Dalai | 2013 | Role of aerosol type and mixing state on CCN activity |
Akhilesh Rawal | 2012 | Study of ion-aerosol near-cloud mechanism to explain cosmic ray-cloud-climate conundrum |
Shamjad P.M. | 2011 | Hygroscopicity, mixing state and enhanced absorption of aerosols |
Priya Choudhry | 2011 | Validation of MODIS-retrieved AOD over Indo-Gangetic Plain |
Monika Srivastava | 2011 | Aircraft-based CCN Closure |
Pawan Kumar Bharti | 2010 | A study of inter and intra variation seasonal of surface Cloud Condensation Nuclei and chemical closure in Kanpur |
Vishnu Patidar | 2009 | First surface, spatial and vertical measurements of Cloud Condensation Nuclei (CCN)over Indian CTCZ region. |
Jariwala Chinmay G. | 2009 | An observational and laboratory study on the effects of Cloud Condensation Nuclei and black carbon aerosol on fog persistence. |
Vivek Pratap Singh | 2008 | An experimental investigation of the effects of environmental and fog condensationnuclei parameters on rate of fog dissipation. |
Sanjay Prakash Baxla | 2008 | A study of ambient ultra fine aerosols using SMPS. |
Anirban Roy | 2008 | Measurement and simulation of particulate aerosols. |
Anilkumar D. Vanga | 2007 | A numerical study of new particle formation in cirrus cloud. |
Sudip Chakraborty | 2006 | Long term changes in surface and columnar water vapor over North India. |
Abani Patnaik | 2006 | Climatology of cloud and aerosol over the Indian subcontinent and adjoining oceans. |
Roma Srivastava | 2006 | Study of trace gas concentration over Kanpur region. |
Parul Sharma | 2006 | Study of aerosol chemical composition over Kanpur region. |
Tanveer Ahmed | 2005 | Charging of radioactive aerosols containment wall of pressurized water reactor. |
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
Kuldeep Dixit | Current Position: Project Scientist, CAS, IIT Delhi |
Jitendra Kumar Meher | Current Position: Kreate Energy (I) Pvt. Ltd., Kreate Global, Vaishali, Ghaziabad, UP |
Dinesh Nath | Current Position: |
Shilpa Shirodkar | Current Position: IIT Kanpur |
Pravin Kumar Verma | Current Position: Mumbai |
Vijay Kanawade | Current Position: UGC-Assistant Professor, Centre for Earth and Space Sciences (UCESS), University of Hyderabad, Prof C R Rao Road, Gachibowli, Hyderabad, |
M S Gandhi | Current Position: Pennagaram, Dharmapuri, Tamil Nadu |
Mary Michael | Current Position: Trivandrum |
Beena Umrao | Current Position: New Delhi |
Bhola N. Singh | Current Position: Branch Manager, SBI, Lucknow |
A.R. Ragi | Current Position: Ph.D. Student, Department of CAS, IIT Delhi |
Arindam Ghosh | Current Position: Postdoctoral Fellow, Japan |
Tanmay Dhar | Current Position: Research Scholar, Department of Civil Engineering, IIT Bombay |
Litty Thomas | Current Position: Kerala |
Desh Deepak | Current Position: Mumbai |
Nikita Tripathi | Current Position: Chandigarh |
Bodhaditya Santra | Email: bodhaditya.santra@gmail.com |
Rishi Jain | Email: rishij@iitk.ac.in |
M. S. Modgil | Email: moni_g4@yahoo.com |
Sanjeev Kumar | Current Position: Self-Employed |
Rina Dutta | Current Position: Doctoral Student, IIT Kharagpur (WB) |
Manoj K. Sagar | Current Position: Bangalore |
Saurav Dayal | Current Position: Research Engineer |
Nimisha Srivastava | Current Position: Research Engineer |
Narayan | Current Position: Doctoral Student, Mississippi State University, USA |
Praveen Pandey | Current Position: Doctoral Student, Katholik University of Leuven, Belgium |
Atul Srivastava | Current Position: Scientist, Indian Institute of Tropical Meteorology, New Delhi |
Subhash Tiwari | Current Position: Self employe Email: stewari@iitk.ac.in |