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Jian Wang

Tenured Scientist

My research focuses on the processes that control the properties and evolutions of atmospheric aerosols and the interactions between aerosols and clouds.  The main topics are: (1) the effects of aerosols on cloud properties including the cloud droplet number concentration, size spectrum, and cloud albedo; (2) Boundary layer nucleation and new particle formation; (3) the evolution of aerosol microphysics, chemical composition, and droplet activation efficiency as the aerosol is transported downwind of major sources; (4) the development of advanced instruments for measuring aerosol size distribution, hygroscopicity, and cloud condensation nuclei concentration, with the focus on aircraft-based deployments.


  • California Institute of Technology, Ph.D. in Chemical Engineering
  • California Institute of Technology, M.S. Chemical Engineering
  • University of Science and Technology of China, B.S. Physical Chemistry


  • American Association for Aerosol Research
  • American Geophysical Union
  • European Geosciences Union

Areas of Interest

  • Aerosol cloud interactions
  • Aerosol physics and chemistry
  • Aerosol instrumentation


  • “Fast mixing condensation nucleus counter”, US Patent 6,567,157 B1
  • “Aerosol mobility size spectrometer”, US Patent 7,298,486
  • “Improvement of Size Range of Aerosol Mobility Size Spectrometer”, Patent Pending

Professional Experience

  • Tenured Scientist, Brookhaven National Laboratory, Dec. 2010-Present
  • Scientist, Brookhaven National Laboratory, Oct. 2008-Nov. 2010
  • Associate Scientist, Brookhaven National Laboratory, Sept. 2005-Sept. 2008
  • Adjunct Faculty, School of Marine and Atmospheric Sciences, Stony Brook University, Sept. 2005-Present
  • Goldhaber Distinguished Fellow, Brookhaven National Laboratory, Sept. 2002-Sept. 2005

External Service

  • Atmospheric Radiation Measurement (ARM) Climate Research Facility science board member, Jan 2012- present
  • Atmospheric System Research (ASR) Science and Infrastructure Steering Committee member, Oct. 2009 – present
  • Co-chair, aerosol lifecycle working group of Atmospheric System Research (ASR) program, Department of Energy.  Oct. 2009 – present
  • Editor of the journal Aerosol Science and Technology, Mar. 2009 – present
  • Science steering committee member of Observations and Modeling of the Green Ocean Amazon (GoAmazon2014) campaign
  • Member, DOE and NOAA review panels
  • Invited panel member of NASA Tropospheric Airborne Measurement Evaluation Panel, 2008 and 2009

Selected Publications (since 2002)

Kangasluoma, J., Kuang, C., Wimmer, D., Rissanen, M. P., Lehtipalo, K., Ehn, M., Worsnop, D. R., Wang, J., Kulmala, M., and Petäjä, T. Sub-3 nm particle size and composition dependent response of a nano-CPC battery. Atmos. Meas. Tech. 7, 689-700, doi:10.5194/amt-7-689-2014 (2014).

Yu, H., Gannet Hallar, A., You, Y., Sedlacek, A., Springston, S., Kanawade, V. P., Lee, Y.-N., Wang, J., Kuang, C., McGraw, R. L., McCubbin, I., Mikkila, J., and Lee, S.-H. Sub-3 nm particles observed at the coastal and continental sites in the United States. J. Geophys. Res. Atmos., online, doi:10.1002/2013JD020841 (2014).

Lee, Y.-N., Springston, S., Jayne, J., Wang, J., Hubbe, J., Senum, G., Kleinman, L., and Daum, P. Chemical composition and sources of coastal marine aerosol particles during the 2008 VOCALS-REx campaign.  Atmos. Chem. Phys. Discuss. 13, 26043-26115, doi:10.5194/acpd-13-26043-2013 (2013).

Mei, F., Hayes, P. L., Ortega, A., Taylor, J. W., Allan, J. D., Gilman, J., Kuster, W., de Gouw, J., Jimenez, J. L., and Wang, J.  Droplet activation properties of organic aerosols observed at an urban site during CalNex-LA. J. Geophys. Res. - Atmos. 118, 2903-2917, doi:10.1002/jgrd.50285 (2013).

Mei, F., Setyan, A., Zhang, Q., and Wang, J.  CCN activity of organic aerosols observed downwind of urban emissions during CARES. Atmos. Chem. Phys. Discuss. 13, 9355-9399, doi:10.5194/acpd-13-9355-2013 (2013).

Mei, F., Setyan, A., Zhang, Q., and Wang, J.  CCN activity of organic aerosols observed downwind of urban emissions during CARES. Atmos. Chem. Phys. 13, 12155-12169, doi:10.5194/acp-13-12155-2013 (2013).

Wang, J., McGraw, R. L., and Kuang, C. Growth of atmospheric nano-particles by heterogeneous nucleation of organic vapor. Atmos. Chem. Phys. 13, 6523-6531, doi:10.5194/acp-13-6523-2013 (2013).

Wang, J. and Wexler, A. S. Adsorption of Organic Molecules May Explain Growth of Newly Nucleated Clusters and New Particle Formation. Geophys. Res. Lettrs 40, 1-5, doi:10.1002/grl.50455 (2013).

Wang, J., McGraw, R. L., and Kuang, C. Flux induced growth of atmospheric nano-particles by organic vapors. Atmos. Chem. Phys. Discuss. 12, 22813-22833, doi:10.5194/acpd-12-22813-2012 (2012).

Min, Q., Joseph, E., Lin, Y., Min, L., Yin, B., Daum, P. H., Kleinman, L. I., Wang, J., and Lee, Y.-N. Validation of MODIS cloud microphysical properties with in situ measurements over the Southeast Pacific, Atmos. Chem. Phys. Discuss. 12, 1419-1449, doi:10.5194/acpd-12-1419-2012 (2012).

Kuang C. G., M. Chen, J. Zhao, J. Smith, P. H. McMurry, and J. Wang.  First size-dependent growth rate measurements of 1 to 5 nm freshly formed atmospheric nuclei, Atmos. Chem. Phys. 12, 3573-3589 (2012).

Kleinman L. I., P. H. Daum, Y.-N. Lee, E. R. Lewis, A. J. Sedlacek III, G. I. Senum, S. R. Springston, J. Wang, J. Hubbe, J. Jayne, Q. Min, S. S. Yum, and G. Allen.  Aerosol concentration and size distribution measured below, in, and above cloud from the DOE G-1 during VOCALS-REx, Atmos. Chem. Phys. 12, 207-223 (2012).

Kuang C. G., M. Chen, P. H. McMurry, and J. Wang.  Modification of Laminar Flow Ultrafine Condensation Particle Counters for the Enhanced Detection of 1 nm Condensation Nuclei, Aerosol Sci. Technol. 46, 309-315 (2012).

Liu X. H. and J. Wang.  How important is organic aerosol hygroscopicity to aerosol indirect forcing?, Environmental Research Letters 5, 044010, doi:10.1088/1748-9326/5/4/044010 (2010).

Wang, J., M. J. Cubison, A. C. Aiken, J. L. Jimenez, and D. R. Collins.  The importance of aerosol mixing state and size-resolved composition on CCN concentration and the variation of the importance with atmospheric aging of aerosols, Atmos. Chem. Phys. 10, 7267-7283 (2010).

Wang J.  A fast integrated mobility spectrometer with wide dynamic size range: Theoretical analysis and numerical simulation, J. Aerosol Sci. 40, 890-906, doi:10.1016/j.jaerosci.2009.06.005 (2009).

Wang. J., P. H. Daum,  S. S. Yum, Y. G. Liu, G. Senum, L. Lu, J. H. Seinfeld, and H. Jonnsson.  Observations marine stratocumulus microphysics and implications for processes controlling droplet spectra: results from the Marine Stratus/stratocumulus Experiment (MASE), J. Geophys. Res. 114, D18210, doi:10.1029/2008JD011035 (2009).

Kleinman, L. I., Springston, S. R., Wang, J., Daum, P. H., Lee, Y.-N., Nunnermacker, L. J., Senum, G. I., Weinstein-Lloyd, J., Alexander, M. L., Hubbe, J., Ortega, J., Zaveri, R. A., Canagaratna, M. R., and Jayne, J.  The time evolution of aerosol size distribution over the Mexico City plateau, Atmos. Chem. Phys. 9, 4261-4278 (2009).

Olfert, J., and J. Wang.  Dynamic characteristics of a fast-response aerosol size spectrometer, Aerosol Sci. Technol. 43, 97-111 (2009).

Wang. J., Y. N. Lee, P. H. Daum, J. Jayne, and M. L. Alexander.  Effects of aerosol organics on cloud condensation nucleus (CCN) concentration and first indirect aerosol effect, Atmos. Chem. Phys. 8, 6325-6339 (2008).

Olfert, J., P. S. Kulkarni, and J. Wang.  Measurements of particle size distributions using a Fast Integrated Mobility Spectrometer, J. Aerosol Sci. 39, 940-956, doi:10.1016/j.jaerosci.2008.06.005 (2008).

Kleinman, L. I., S. R. Springston, P. H. Daum, Y.-N. Lee, L. J. Nunnermacker, G. I. Senum, J. Wang, J. Weinstein-Lloyd, M. L. Alexander, J. Hubbe, J. Ortega, M. R. Canagaratna, and J. Jayne.  The time evolution of aerosol composition over the Mexico City plateau, Atmos. Chem. Phys. 8, 1559-1575 (2008).

Wang, J.  Effects of spatial and temporal variations in aerosol properties on mean cloud albedo, J. Geophys. Res. 112, D16201, doi:10.1029/2007JD008565 (2007).

Wang, J., P. H. Daum, L. I. Kleinman, Y. N. Lee, S. E. Schwartz, S. R. Springston, H. Jonsson, D Covert, and R. Elleman.  Observation of ambient aerosol particle growth due to in-cloud processes within boundary layers, J. Geophys. Res. 112, D14207, doi:10.1029/2006JD007989 (2007).

Kulkarni P. and J. Wang.  New Fast Integrated Mobility Spectrometer for Real-Time Measurement of Aerosol Size Distribution: II. Design, Calibration, and Performance Characterization, J. Aerosol Sci. 37(10), 1326-1339 (2006).

Kulkarni P. and J. Wang. New Fast Integrated Mobility Spectrometer for Real-Time Measurement of Aerosol Size Distribution: I. Concept and Theory, J. Aerosol Sci. 37(10), pp1303-1325. (2006).

Wang J., Collins D. R, Covert D., Elleman R., Ferrare R. A., Gasparini R., Jonsson H., Ogren J., Sheridan P., and Tsay S. C. Temporal variation of aerosol properties at a rural continental site and study of aerosol evolution through growth law analysis, J. Geophys. Res. 111(D18), Art. No. D18203 (2006).

Wang J., Storey J., Domingo N., Huff S., Thomas J., and West B. Studies of diesel engine particle emissions during transient operations using an Engine Exhaust Particle Sizer, Aerosol Sci. Technol. 40(11), 1002-1015 (2006).

Wang J., Flagan R. C., Seinfeld J. H., Collins D. R., Jonsson H. H., Schmid B., Redemann J., Livingston J. M., Russell P. B., Gao S., Hegg D. A., Welton E. J., and Bates D.  Clear-column radiative closure during ACE-Asia: Comparison of multiwavelength extinction derived from particle size and composition with results from Sun photometry, J. Geophys. Res. 107(D23), Art. No. 4688 (2002).

Wang J., McNeill V. F., Collins D. R., and Flagan R. C.  Fast Mixing Condensation Nucleus Counter: Application to Rapid Scanning Differential Mobility Analyzer Measurements, Aerosol Sci. Technol. 36(6), 678-689 (2002).