Skip to Main Content U.S. Department of Energy
Fundamental and Computational Sciences Directorate

Staff information


Swarup China

Physiochemical Transform
Pacific Northwest National Laboratory
PO Box 999
MSIN: K8-83
Richland, WA 99352


His major areas of research interest are the physical and chemical properties of atmospheric aerosols, atmospheric aerosol chemistry and heterogeneous ice nucleation. Swarup utilizes microscopy, spectroscopy and high-resolution mass spectrometry techniques to study atmospheric processes. He studies chemical aging of atmospheric particle through multi-phase atmospheric chemistry and to investigate the effect of physiochemical properties of complex atmospheric particles on heterogeneous ice nucleation and optical properties. He aims to better understand the physical chemistry of atmospheric particles controlling aerosol-cloud interactions.

Research Interests

  • Aerosol and cloud interaction, heterogeneous ice nucleation, aerosol morphology and optical properties, aerosol spectro-microscopy, high-resolution mass spectrometry, heterogeneous chemistry

Education and Credentials

  • Ph.D., Atmospheric Science (Michigan Technological University, 2009-2014)
  • M.S., Civil and Environmental Engineering (University of Nevada Las Vegas, 2006-2008)
  • B.Tech.,Civil Engineering (Visvesvaraya National Institute of Technology, India, 2002-2006)

Awards and Recognitions

  • Selected to attend the Atmospheric Chemistry Colloquium for Emerging Senior Scientists (ACCESS)
  • Outstanding Scholarship Award, Michigan Technological University
  • NASA Earth and Space Science Fellowship
  • Carollo Engineers Graduate Scholarship

PNNL Publications


  • Fierce L., T.B. Onasch, C. Cappa, C. Mazzoleni, S. China, J. Bhandari, and P. Davidovits, et al. 2020. "Radiative Absorption Enhancements By Black Carbon Controlled By Particle-to-particle Heterogeneity In Composition." Proceedings of the National Academy of Sciences of the United States of America 117, no. 10:5196-5203. PNNL-SA-151749. doi:10.1073/pnas.1919723117
  • Zaveri R.A., J.E. Shilling, A. Zelenyuk-Imre, M.A. Zawadowicz, K.J. Suski, S. China, and D.M. Bell, et al. 2020. "Particle-phase diffusion modulates partitioning of semivolatile organic compounds to aged secondary organic aerosol." Environmental Science & Technology 54, no. 5:2595-2605. PNNL-SA-147224. doi:10.1021/acs.est.9b05514


  • Bhandari J., S. China, G. Girotto, B. Scarnato, K. Gorkowski, A. Aiken, and M.K. Dubey, et al. 2019. "Optical properties and radiative forcing of fractal-like tar ball aggregates from biomass burning." Journal of Quantitative Spectroscopy and Radiative Transfer 230. PNNL-SA-138061. doi:10.1016/j.jqsrt.2019.01.032


  • China S., S.M. Burrows, B. Wang, T. Harder, J. Weis, M. Tanarhte, and L.V. Rizzo, et al. 2018. "Fungal spores as a source of sodium salt particles in the Amazon basin." Nature Communications 9. PNNL-SA-130861. doi:10.1038/s41467-018-07066-4
  • Creamean J., R.M. Kirpes, K.A. Pratt, N.J. Spada, M. Maahn, G. de Boer, and R.C. Schnell, et al. 2018. "Marine and terrestrial influences on ice nucleating particles during continuous springtime measurements in an Arctic oilfield location." Atmospheric Chemistry and Physics 18, no. 24:18023-18042. PNNL-SA-135739. doi:10.5194/acp-18-18023-2018
  • May N.W., N. Olson, M.H. Panas, J.L. Axson, P.N. Tirella, R.M. Kirpes, and R.L. Craig, et al. 2018. "Aerosol Emissions from Great Lakes Harmful Algal Blooms." Environmental Science & Technology 52, no. 2:397-405. PNNL-SA-129527. doi:10.1021/acs.est.7b03609


  • Bateman A.P., Z.H. Gong, T. Harder, S. de Sa, B. Wang, P. Castillo, and S. China, et al. 2017. "Anthropogenic influences on the physical state of submicron particulate matter over a tropical forest." Atmospheric Chemistry and Physics 17, no. 3:1759-1773. PNNL-SA-119055. doi:10.5194/acp-17-1759-2017
  • Fraund M.W., D.Q. Pham, D. Bonanno, T. Harder, B. Wang, J. Brito, and S. de Sa, et al. 2017. "Elemental Mixing State of Aerosol Particles Collected in Central Amazonia during GoAmazon2014/15." Atmosphere 8, no. 9:173. PNNL-SA-129528. doi:10.3390/atmos8090173
  • Gunsch M.J., R.M. Kirpes, K.R. Kolesar, T.E. Berrett, S. China, R.J. Sheesley, and A. Laskin, et al. 2017. "Contributions of Transported Prudhoe Bay Oilfield Emissions to the Aerosol Population in Utqiagvik, Alaska." Atmospheric Chemistry and Physics 17, no. 17:10879-10892. PNNL-SA-126287. doi:10.5194/acp-17-10879-2017
  • Gyawali M.S., W. Arnott, R.A. Zaveri, C. Song, B. Flowers, M.K. Dubey, and A. Setyan, et al. 2017. "Evolution of Multispectral Aerosol Absorption Properties in a Biogenically-Influenced Urban Environment during the CARES Campaign." Atmosphere 8, no. 11:217. PNNL-SA-130581. doi:10.3390/atmos8110217


  • China S., B. Wang, J. Weis, L.V. Rizzo, J. Brito, G. Cirino, and L. Kovarik, et al. 2016. "Rupturing of biological spores as a source of secondary particles in Amazonia." Environmental Science & Technology 50, no. 22:12179 - 12186. PNNL-SA-118675. doi:10.1021/acs.est.6b02896
  • Kulkarni G.R., S. China, S. Liu, M.I. Nandasiri, N. Sharma, J.M. Wilson, and A.C. Aiken, et al. 2016. "Ice nucleation activity of diesel soot particles at Cirrus relevant conditions: Effects of hydration, secondary organics coating, hydration, soot morphology, and coagulation." Geophysical Research Letters 43, no. 7:3580-3588. PNNL-SA-113363. doi:10.1002/2016GL068707
  • Laskin A., M.K. Gilles, D.A. Knopf, B. Wang, and S. China. 2016. "Progress in the Analysis of Complex Atmospheric Particles." Annual Review of Analytical Chemistry 9. PNNL-SA-114559. doi:10.1146/annurev-anchem-071015-041521
  • Wang B., D.A. Knopf, S. China, B.W. Arey, T. Harder, M.K. Gilles, and A. Laskin. 2016. "Direct observation of ice nucleation events on individual atmospheric particles." Physical Chemistry Chemical Physics. PCCP 18, no. 43:29721-29731. PNNL-SA-116952. doi:10.1039/c6cp05253c
  • Wang B., H.T. Harder, S.T. Kelly, D.Y. Piens, S. China, L. Kovarik, and M. Keiluweit, et al. 2016. "Airborne Soil Organic Particles Generated by Precipitation." Nature Geoscience 9, no. 6:433-438. PNNL-SA-110735. doi:10.1038/NGEO2705


  • China S., G.R. Kulkarni, B. Scarnatio, N. Sharma, M.S. Pekour, J.E. Shilling, and J.M. Wilson, et al. 2015. "Morphology Of Diesel Soot Residuals From Supercooled Water Droplets And Ice Crystals: Implications For Optical Properties." Environmental Research Letters 10. PNNL-SA-112661. doi:10.1088/1748-9326/10/11/114010

Science at PNNL

Core Research Areas

User Facilities

Centers & Institutes

Research Highlights

View All Research Highlights & Staff Accomplishments

RSS Feed