2015 Elected Fellow, The National Academy of Sciences, India 2015-2018 Rajeeva and Sangeeta Lahri Chair Professor 2015 Elected Fellow of Indian National Academy of Engineering 2009-2012 Sir M. Visvesaraya Research Fellowship for excellence in teaching and Research 2009-2010 NASA Senior Fellowship    Recognitions Member, National Nodal Faculty, National Knowledge Network Partner for NCAP, Ministry of Environment, Forest and Climate Change, 2019. Member, National Clean Air Program (NCAP), Ministry of Environment, Forest and Climate Change, 2019. Member, Cloud Seeding Committee, UP Government, 2018. Member, Technical Expert Committe (TEC) for Petcoke & Alternative Fuels, Ministry of Environment, Forest and Climate Change, 2018. Associate Editor, Journal of Indian Geophysical Union, 2018. Expert member, Committee on “Aerosol, Radiation and Trace Gases”, NARL, Gadanki, 2018. National Coordinator, DST’s National Network Programme on Climate Change and Aerosol, 2018-2021. Member, Research Council of CSIR-National Environmental Engineering Research Institute, 2017-2020. Member, Editorial Board, Journal of Aerosol Science, 2016-2019. Member, Advisory Board of Environmental Science: Processes & Impacts - A Royal Society of Chemistry Publication, 2016-2018. Academic Editor (member of the Editorial Board) of PLOS ONE (2014)