Dr. Rajan K. Chakrabarty

Affiliate Assistant Research Professor
6368616b7261626172747940777573746c2e656475
314-935-6054
aerosols, morphology, fractal, radiative forcing, parameterization, South Asia, black carbon, brown carbon

Contact Information
Department of Energy, Environmental and Chemical Engineering | Washington University in Saint Louis | Brauer Hall 3025


Professional Interests

My research interests lie in the study of aerosol physics and atmospheric radiation transfer in addressing today’s energy issues. Specifically, my research focuses on the following two distinct themes: (i)Investigating the role of atmospheric aerosols in earth’s energy balance using novel instrumentation and diagnostic techniques and models; and (ii) Understanding aerosol formation in combustion systems towards synthesis of high porosity and surface-area materials for catalysis, solar cells and various energy applications.


Research Areas

  • Physical, chemical and optical properties of atmospheric aerosols · Aerosol aggregation kinetics · Optical spectroscopy and electron microscopy of nanomaterials


Education

DegreeYearInstitutionArea 
Ph.D. 2008 University of Nevada Reno Chemical Physics  
M.S. 2006 University of Nevada Reno Atmospheric Sciences  
B.Eng. 2003 University of Madras, India Electronics and Instrumentation Engg.  


Awards and Honors

YearHonor
2009 3rd Prize (Honorable Mention): Exceptional Doctoral Dissertation Award (International-level) by the Air & Waste Management Association (AWMA) in recognition of significant contribution to the field of air quality and research.
2008 University of Nevada Reno Outstanding Graduate Researcher of the year award
2008 University of Nevada Reno Outstanding International Graduate Student of the year award
2008 Nevada National Science Foundation (NSF) EPSCoR “Student Entrepreneur of the year” award
2008 One of 4 finalists (from out of 100 contestants nationwide) in the Harvard University entrepreneurial I3 competition for development of ClassCommon.com – an academic social networking platform K-16 students.
2007 One of 15 finalists (from out of 200 contestants nationwide) in the Massachusetts Institute of Technology (MIT) entrepreneurial elevator pitch competition for conceptualization of ClassCommon.com.
2006 Two-year National Science Foundation EPSCoR doctoral fellowship (amount: ~ $ 85,000) for the academic years 2006-2008.
2006 National–level annual scholarship award (amount: $2000) by the Air & Waste Management Association (AWMA) in recognition of excellence in air quality research and study for the academic year 2006-2007
2005 Collin Warden Memorial Award by the Desert Research Institute, Reno, NV - The endowment recognizes outstanding graduate students

Publications & Presentations

2016

Chakrabarty, R. K., Gyawali, M., Yatavelli, L., Pandey, A., Watts, A. C., Knue, J. D., Chen, L.-W.A., Pattison, R. R., Tsibart, A. T., Samburova, V., Moosmuller, H. (2016). Brown carbon aerosols from burning of boreal peatlands: microphysical properties, emission factors, and implications for direct radiative forcing, Atmos. Chem. Physics, 16, (5), 3033-3040, doi:10.5194/acp-16-3033-2016
Pervez, S., Chakrabarty, R. K., Dewangan, S., Watson, J. G., Chow, J. C., Matawle, J. L. (2016). Chemical speciation of aerosols and air quality degradation during the festival of lights (Diwali), Atmospheric Pollution Research, 7, 92-99

2015

Chakrabarty, R. K., Gyawali, M., Yatavelli, L., Pandey, A., Watts, A. C., Knue, J. D., Chen, L.-W.A., Pattison, R. R., Tsibart, A. T., Samburova, V., Moosmuller, H. (2015). Dominance of brown carbon in aerosol emissions from burning of boreal peatlands, Atmos. Chem. Physics, Discuss., 15, 28793-28813
Gyawali, M., Watts, A. C., Samburova, V., Chakrabarty, R. K., Knue, J. D., Chen, L.-W.A., Arnold, I. J., Wang, X., Khlystov, A. Y., Chow, J. C., Zielinska, B. K., Watson, J. G., Moosmuller, H. (2015). Optical Properties of Aerosols Emitted from Laboratory Peat Combustion, 34th Annual Conference of the American Association for Aerosol Research: Minneapolis, MN, October 12, 2015
Gyawali, M., Yatavelli, L., Watts, A. C., Samburova, V., Chakrabarty, R. K., Knue, J. D., Chen, L.-W.A., Arnold, I. J., Wang, X., Khlystov, A. Y., Chow, J. C., Zielinska, B. K., Watson, J. G., Moosmuller, H. (2015). Optical Properties of Aerosol Emissions from Laboratory Peat Combustion, 11th International Conference on Carbonaceous Particles in the Atmosphere: Berkeley, CA, August 10, 2015
Gyawali, M., Yatavelli, L., Watts, A. C., Samburova, V., Chakrabarty, R. K., Knue, J. D., Chen, L.-W.A., Arnold, I. J., Wang, X., Khlystov, A. Y., Chow, J. C., Zielinska, B. K., Watson, J. G., Moosmuller, H. (2015). Optical Properties of Emissions from Laboratory Peat Combustion, 15th Electromagnetic and Light Scattering (ELS) Conference: Leipzig, Germany, June 21, 2015
Khlystov, A. Y., Samburova, V., Gyawali, M., Yatavelli, L., Chakrabarty, R. K., Watts, A. C., Knue, J. D., Cunningham, A. E., Connolly, J., Moosmuller, H., Zielinska, B. K. (2015). Detailed Analysis of Brown Carbon Constituents in Biomass Burning Emissions, 34th Annual Conference of the American Association for Aerosol Research: Minneapolis, MN, October 12, 2015
Mocnik, G., Drinovec, L. G., Petit, J., Favez, O., Sciare, J., Zotter, P., Prrevot, A., Wolf, R., Arnold, I. J., Chakrabarty, R. K., Moosmuller, H., Gregoric, A., Remskar, M., Vaupotic, J., Hansen, A. (2015). Interpretation of the Loading Effect in Absorption Filter Photometers - Dual Spot Aethalometer Measurements, 11th International Conference on Carbonaceous Particles in the Atmosphere: Berkeley, CA, August 10, 2015
Pervez, S., Chakrabarty, R. K., Dewangan, S., Watson, J. G., Chow, J. C., Matawle, J., Pervez, Y. (2015). Cultural and ritual burning emission factors and activity levels in India, Aerosol Air Qual. Res, 15, (1), 72-80
Samburova, V., Gyawali, M., Yatavelli, L., Chakrabarty, R. K., Watts, A. C., Knue, J. D., Cunningham, A. E., Connolly, J., Khlystov, A. Y., Moosmuller, H., Zielinska, B. K. (2015). Analysis of Polycyclic Aromatic Hydrocarbons in Gaseous- and Particle- Phase Emissions from Peat Fuel Combustion Under Controlled Conditions, A&WMA 108th Annual Conference: Raleigh, NC, June 22, 2015-June 26, 2015
Samburova, V., Gyawali, M., Yatavelli, L., Chakrabarty, R. K., Watts, A. C., Knue, J. D., Cunningham, A. E., Connolly, J., Moosmuller, H., Zielinska, B. K., Khlystov, A. Y. (2015). Estimation of light absorption by biomass burning aerosols using detailed chemical composition data., PacifiChem: Honolulu, HI, December 16, 2015-December 20, 2015

2014

Chakrabarty, R. K., Beres, N. D., Moosmuller, H., China, S., Dubey, M. K., Liu, L., Mishchenko, M. I. (2014). The Superaggregates Form of Soot from Wildfires and its Impact on Direct Radiative Forcing, Goldschmidt2014: Sacramento, CA, June 8, 2014
Chakrabarty, R. K., Beres, N. D., Moosmuller, H., China, S., Mazzoleni, C., Dubey, M. K., Liu, L., Mishchenko, M. I. (2014). Soot superaggregates from flaming wildfires and their direct radiative forcing, Nature Sci. Rep., 4, (5508), (8 pages), doi:10.1038/srep05508
Chakrabarty, R. K., Beres, N. D., Moosmuller, H., China, S., Mazzoleni, C., Dubey, M. K., Liu, L., Mishchenko, M. I. (2014). How Well Do Laboratory Studies Represent Microphysical Properties of Soot Emitted from Wildfires, 33nd Annual Conference of the American Association for Aerosol Research: Orlando, FL, October 20, 2014
Chakrabarty, R. K., Novosselov, I. V., Beres, N. D., Moosmuller, H., Sorensen, C. M., Stipe, C. B. (2014). Trapping and aerogelation of nanoparticles in negative gravity hydrocarbon flames, Applied Physics Letters, 104, 243103-1
Chakrabarty, R. K., Novosselov, I. V., Beres, N. D., Moosmuller, H., Stipe, C. B., Sorensen, C. M. (2014). Gravity-Induced Trapping and Aerogelation of Nanoparticles in Flame Reactors, 33nd Annual Conference of the American Association for Aerosol Research: Orlando, FL, October 20, 2014
Chakrabarty, R. K., Pervez, S., Chow, J. C., Dewangan, S., Robles, J. A., Tian, G. X., Watson, J. G. (2014). Funeral pyres in south Asia: Large-scale brown carbon emissions and associated warming, Environ. Sci. & Technol., 1, (1), 44-48
Dewangan, S., Pervez, S., Chakrabarty, R. K., Zielinska, B. K. (2014). Uncharted sources of particle bound polycyclic aromatic hydrocarbons from South Asia: Religious/ritual burning practices, Atmos. Pollut. Res., 5, 283-291, doi:10.5094/APR.2014.034
Drinovec, L., Moenik, G., Arnold, I. J., Chakrabarty, R. K., Hansen, A., Moosmuller, H. (2014). Optical Properties of Primary Combustion Aerosols, 33nd Annual Conference of the American Association for Aerosol Research: Orlando, FL, October 20, 2014
Drinovec, L., Moenik, G., Arnold, I. J., Chakrabarty, R. K., Moosmuller, H. (2014). Optical Properties of Primary Combustion Aerosols, 2014 International Aerosol Conference (IAC2014): Busan, Korea, August 28, 2014-September 2, 2014
Ehlers, K. M., Chakrabarty, R. K., Moosmuller, H., Dettinger, M. (2014). Blue Moons and Martian Sunsets, Appl. Opt., 53, 1808-1819
Engelbrecht, J. P., Moosmuller, H., Pincock, S. L., Campbell, D. E., Chakrabarty, R. K., Jayanty, R., Casuccio, G. (2014). Optical Properties of Suspended Mineral Dusts from Desert Source Region, 33nd Annual Conference of the American Association for Aerosol Research: Orlando, FL, October 20, 2014
Gyawali, M., Chakrabarty, R. K., Yatavelli, L., Chen, L.-W.A., Knue, J. D., Samburova, V., Watts, A. C., Moosmuller, H., Arnott, W., Wang, X., Zielinska, B. K., Chow, J. C., Watson, J. G., Tsibart, A. (2014). Strong Wavelength Dependence of Aerosol Light Absorption from Peat Combustion, Poster presentation at the 2014 AGU Fall Meeting: San Francisco, CA, December 15, 2014
Johnson, M. M., Yatavelli, L., Chen, L.-W.A., Gyawali, M., Arnott, W., Wang, X., Chakrabarty, R. K., Moosmuller, H., Watson, J. G., Chow, J. C. (2014). Multi-Wavelength Characterization of Brown and Black Carbon from Filter-Based Samples, 2014 AGU Fall Meeting: San Francisco, CA, December 15, 2014
Knue, J., Yatavelli, L., Chen, L.-W.A., Samburova, V., Gyawali, M., Watts, A. C., Chakrabarty, R. K., Moosmuller, H., Wang, X., Zielinska, B. K., Chow, J. C., Watson, J. G., Tsibart, A. (2014). A Comparison of Mass-based Emission Factors from Laboratory Combustion of Boreal and Sub-Tropical Peat, 2014 AGU Fall Meeting: San Francisco, CA, December 15, 2014
Lack, D. A., Moosmuller, H., McMeeking, G. R., Chakrabarty, R. K., Baumgardner, D. (2014). (Invited). Characterizing Elemental, Equivalent Black, and Refractory Black Carbon Aerosol Particles: A Review of Techniques, Their Limitations and Uncertainties, Anal. Bioanal. Chem., 406, 99-122, doi: 10.1007/s00216-013-7402-3
Pervez, S., Chakrabarty, R. K., Dewangan, S., Zielinska, B. K. (2014). Indoor VOCs from Religious and Ritual Burning Practices in India, Aerosol Air. Qual. Res., 14, 1418-1430
Watts, A. C., Chakrabarty, R. K., Samburova, V., Moosmuller, H. (2014). Climatic Implications of Peat Fire Emissions, 33nd Annual Conference of the American Association for Aerosol Research: Orlando, FL, October 20, 2014
Yatavelli, L., Chakrabarty, R. K., Gyawali, M., Knue, J., Engling, G., Moosmuller, H., Rhode, D. E., Chen, L.-W.A., Wang, X., Chow, J. C., Watson, J. G. (2014). Emissions from Burning Incense and Dung: Two Unregulated Sources of Brown Carbon in Asia, 33nd Annual Conference of the American Association for Aerosol Research: Orlando, FL, October 20, 2014
Yatavelli, L., Chen, L.-W.A., Knue, J., Samburova, V., Gyawali, M., Watts, A. C., Chakrabarty, R. K., Moosmuller, H., Wang, X., Zielinska, B. K., Chow, J. C., Watson, J. G. (2014). Mass- and Energy-Based Emission Factors and Gas-Particle Partitioning of Intermediate-Volatility and Semi-Volatile Organic Compounds from Laboratory Combustion of Boreal and Sub-Tropical Peat, 33nd Annual Conference of the American Association for Aerosol Research: Orlando, FL, October 20, 2014

2013

Beres, N. D., Arnold, I. J., Chakrabarty, R. K., Moosmuller, H., Praveen, P. S., Ramanathan, V., Arnott, W., Schauer, J., Gustafsson, O. (2013). Properties of Carbonaceous Aerosols during CARDEX 2012: An Instrument Intercomparison, 32nd Annual Conference of the American Association for Aerosol Research: Portland, OR, September 30, 2013-October 4, 2013
Beres, N. D., Chakrabarty, R. K., Moosmuller, H., Liu, L., Mishchenko, M. I. (2013). Atmospheric Soot Superaggregates: Implications for Health and Radiative Forcing, Division of Atmospheric Sciences Science Talks: Reno, NV, November 13, 2013
Beres, N. D., Liu, L., Mishchenko, M. I., Chakrabarty, R. K., Moosmuller, H., Liu, L., Mishchenko, M. I. (2013). Atmospheric Soot Superaggregates: Implications for Health and Radiative Forcing, 32th Annual Conference of the American Association for Aerosol Research: Portland, OR, September 30, 2013-October 4, 2013
Chakrabarty, R. K., Arnold, I. J., Francisco, D. M., Hatchett, B. J., Hosseinpour, F., Loria Salazar, S. M., Pokharel, A. K., Woody, B. M. (2013). Black and brown carbon fractal aggregates from combustion of two fuels widely used in Asian rituals, J. Quant. Spectrosc. Radiat. Transfer, 122, 25-30
Chakrabarty, R. K., Moosmuller, H., Garro, M. A., Herald, C. M. (2013). Aggregate Simulation. U.S. Patent 8,396,700 B2, Mar. 12, 2013
Chakrabarty, R. K., Pervez, S., Moosmuller, H., Chow, J. C., Watson, J. G. (2013). Light-absorbing Organic Aerosol Emissions from Cultural Practices in South Asia: Contribution to Enhanced Regional Warming, 32th Annual Conference of the American Association for Aerosol Research: Portland, OR, September 30, 2013-October 4, 2013
China, S., Mazzoleni, C., Dubey, M., Chakrabarty, R. K., Moosmuller, H., Arnott, W., Onasch, T., Herndon, S. (2013). Morphology and Mixing State of Atmospheric Aerosol in Mexico City, 32nd Annual Conference of the American Association for Aerosol Research: Portland, OR, September 30, 2013-October 4, 2013
Dewangan, S., Chakrabarty, R. K., Zielinska, B. K., Pervez, S. (2013). Emission of volatile organic compounds from religious and ritual activities in India, Environ. Monit. Assess., 185, 9279-9286
Gyawali, M., Chakrabarty, R. K., Mironenko, M. V. (2013). Extending 94 GHz Radar Retrievals of Ice Water Content beyond the Rayleigh Regime, Annual Science Team Meeting of the Department of Energy Atmospheric System Research Program: Potomac, MD, March 18, 2013
Mazzoleni, C., China, S., Sharma, N., Gorkowski, K., Dubey, M. K., Aiken, A. C., Zaveri, R. A., Salvadori, N., Chakrabarty, R. K., Moosmuller, H., Onasch, T. B., Herndon, S., Williams, L. R., Liu, S., Dzepina, K., Helmig, D., Hueber, J., Fialho, P. J., Mazzoleni, L. R., Kumar, S., Dziobak, M., Wright, K. (2013). Evolution of Soot Morphology and Mixing State in the Atmosphere, AGU Fall Meeting: San Francisco, CA, December 9, 2013
Novosselov, L., Stipe, C., Chakrabarty, R. K., Moosmuller, H. (2013). Modeling of Nanoparticle Synthesis in Inverted Flames, 32nd Annual Conference of the American Association for Aerosol Research: Portland, OR, September 30, 2013-October 4, 2013

2012

Beres, N. D., Arnold, I. J., Chakrabarty, R. K., Moosmuller, H., Praveen, P. S., Ramanathan, V., Arnott, W., Schauer, J., Gustafsson, O. (2012). Absorption of Carbonaceous Aerosols during CARDEX 2012: An Instrument Intercomparison, 2012 Fall Meeting of the American Geophysical Union: San Francisco, CA, December 3, 2012
Beres, N. D., Chakrabarty, R. K., Moosmuller, H., Bender, F., Ramanathan, V. (2012). Carbonaceous Superaggregates in South East Asian Outflow, 31th Annual Conference of the American Association for Aerosol Research: Minneapolis, MN, October 8, 2012
Beres, N. D., Chakrabarty, R. K., Moosmuller, H., Bender, F., Ramanathan, V. (2012). Radiative Properties of Black Carbon Superaggregates in South East Asian Outflow, 2012 Fall Meeting of the American Geophysical Union: San Francisco, CA, December 3, 2012
Chakrabarty, R. K., Gallaspy, M., Moosmuller, H. (2012). Interpreting the Far-Field Scattering Pattern of a Homogeneous Sphere in Q-Space, LIP 2012: Rouen, France, March 26, 2012
Chakrabarty, R. K., Garro, M. A., Moosmuller, H., Wilcox, E.M. (2012). Strong Radiative Heating due to Wintertime Black Carbon Aerosols in the Brahmaputra River Valley, Geophys. Res. Lett., 39, (9), L09804, doi: 10.1029/2012GL051148
Chakrabarty, R. K., Garro, M. A., Wilcox, E.M., Moosmuller, H. (2012). The Brahmaputra River Valley: A Regional Hotspot of Black Carbon Emissions, Aerosol and Atmospheric Optics: Visibility and Air Pollution, Air & Waste Management Association: Whitefish, MT, September 24, 2012
Chakrabarty, R. K., Moosmuller, H., Garro, M. A., Stipe, C. B. (2012). Observation of Superaggregates from a Reversed Gravity Low-Sooting Flame, Aerosol Sci. Tech., 46, (1), i-iii
Chakrabarty, R. K., Stipe, C. B., Moosmuller, H. (2012). Flame Synthesis of Aerosol Gels, 31th Annual Conference of the American Association for Aerosol Research: Minneapolis, MN, October 8, 2012
Moosmuller, H., Chakrabarty, R. K., Arnone, J. A. (2012). Review of Aerosol Light Absorption Measurement, Aerosol and Atmospheric Optics: Visibility and Air Pollution, Air & Waste Management Association: Whitefish, MT, September 24, 2012
Moosmuller, H., Engelbrecht, J. P., Skiba, M., Frey, G., Chakrabarty, R. K., Arnott, W. (2012). Single Scattering Albedo of Fine Mineral Dust Aerosols Controlled by Iron Concentration, Aerosol and Atmospheric Optics: Visibility and Air Pollution, Air & Waste Management Association: Whitefish, MT, September 24, 2012
Moosmuller, H., Skiba, M., Frey, G., Chakrabarty, R. K., Arnott, W., Engelbrecht, J. P. (2012). Single Scattering Albedo of Fine Mineral Dust Aerosols Controlled by Iron Concentration, J. Geophys. Res., 117, (D11210), Online, doi: 10.1029//2011JD016909
Pervez, S., Chakrabarty, R. K. (2012). Significant Contribution of Emissions from Asian Religious and Cultural Activities to Atmospheric Brown Clouds, Aerosol and Atmospheric Optics: Visibility and Air Pollution, AWMA: Whitefish, MT, September 24, 2012

Authors

Abstract