1. Research Associate (July 2005-December 2006): University of Illinois at Urbana Champaign, Illinois, USA

Project title: Understanding the Atmospheric Transformation of Anthropogenic Aerosol: Inferences from Satellite Data and Global Aerosol Modeling

  • Simulation and data analysis of climate model (Community Atmosphere Model) developed by National Centre for Atmospheric Research, Boulder, Colorado.

Parameterized the radiation absorption by particle. This work has been published in Journal of Geophysical Research in 2006. 

  1. Research Associate (January 2007-March 2008): University of California San Diego, California, USA

            Project title: Bounding Aerosol Uncertainties for Climate 

  • Compiled the atmospheric organic carbon concentration data for bounding the uncertainty in climate models.
  • Analyzed the data with Igor analysis and graphical package. 
  1. Research Associate (February 2005-May 2005): Indian Institute of Technology, Bombay, India

            Project title: Aerosols and Indian Monsoon

  • Developed the spatial and seasonal distribution of open biomass burning in India using the fire count from ‘Moderate Resolution Imaging Spectroradiometer (MODIS)’ and bottom up estimates of  amount of biomass burned.
  1. PhD (January 2000-January 2005): Indian Institute of Technology Bombay, India

  Doctoral thesis: Emissions and loading of climate-forcing aerosols from biofuel combustion

  • Measured aerosol emissions form combustion of widely used biofuels (e.g. wood, crop waste and dried cattle manure) in traditional cooking stove.
  • Interpreted the results of microphysical, chemical and optical properties of aerosols emitted from biofuel combustion.
  • Developed the new methodology for biofuel use estimate for India.
  • Developed the regional emission inventories of organic and black carbon for India.
  • Compared the emission inventory of aerosol with satellite derived aerosol index from Total Ozone Mapping Spectrometer (TOMS) and analyzed the effects of regional meteorology including rainfall and circulation.     



  1.  Infrastructure development for size resolved measurement of atmospheric and combustion aerosols, sponsored by Indian Institute of Technology Delhi, grant amount INR 10 lakh, Jul 2008-Jul 2009 [Completed].
  2. DST Fast Track: Development of portable dilution sampler and real time mass measurement and chemical characterization of aerosol from automobiles, Grant 25 lakhs, September 2011 to August 2014 [completed].


  1. DST Extra Mural Research Funded: Understanding the role of seasonal variation in aerosol concentration and composition on cardio vascular illness among healthy and susceptible individuals of Delhi, Grant 52.338 lakhs, December 2014 to December 2017 [On-going].
  2. Ministry of Environment and Forest Climate Change (MOEFCC) funded: National Carbonaceous Aerosol Program (NCAP) WG-III: Modeling carbonaceous aerosol source influence and atmospheric effects, grant for Civil Engineering, IITD is 879.63 Lakhs [On-going].                                                                                                                      
  3. Uttar Pradesh Pollution Control Board (2015) Source apportionment and identification of source locations for ambient PM2.5 measured over Ghaziabad using advanced factor analytic tools, proposed grant 50.54 Lakhs[On-going].