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Staff information


Hailong Wang

Earth Systems Analysis & Modeling
Scientist, Team Lead
Pacific Northwest National Laboratory
PO Box 999
MSIN: K9-30
Richland, WA 99352


Dr. Wang has worked at PNNL since 2009. His research falls within the disciplines of atmospheric aerosols, cloud physics and dynamics, boundary-layer meteorology, and climate change. He works extensively on using large-eddy simulations (LES) and observations to advance the process-level understanding of aerosol-cloud-precipitation-radiation interactions and on improving the representations of cloud-aerosol processes in global models. He has also been highly involved in the development the Weather Research and Forecasting (WRF) model and the Community Earth System Model (CESM) to better study aerosols and their effects on clouds, precipitation, radiation and climate. More recently, Wang led the development of a source-tagging technique in CESM to quantify source-receptor relationships of global carbonaceous aerosols and their sensitivity to emission uncertainties, and has been using this modeling tool along with atmospheric and snow/ice-core measurements to systematically quantify sources and radiative forcing of black carbon over the Arctic and in mid-latitude glaciers and seasonal snow.

Research Interests

  • Cloud Physics and Dynamics
  • Aerosol-Cloud-Precipitation Interactions
  • Marine Cloud Brightening and Geoengineering
  • Global Carbonaceous Aerosol Sources, Sinks, Transport and Radiative Forcing
  • Light-absorbing Impurities in Snow/Ice and Impact on Climate
  • Aerosol/Cloud Parameterizations, Climate Modeling and Uncertainty Quantification

Education and Credentials

  • Ph.D., 2007, Atmospheric Sciences, University of Illinois at Urbana-Champaign
  • M.S., 2001, Atmospheric Sciences, Lanzhou University, China
  • B.S., 1998, Atmospheric Sciences, Lanzhou University, China

Affiliations and Professional Service

  • Member of the American Meteorological Society (AMS)
  • Member of the American Geophysical Union (AGU)
  • Member of the AMS Cloud Physics Committee
  • Member of the U.S. DOE Atmospheric Radiation Measurement (ARM) program User Executive Committee
  • Co-editor of the journal Atmospheric Chemistry and Physics, the European Geosciences Union

Awards and Recognitions

  • 2012, Exceptional Contribution Program award, PNNL
  • 2010, Outstanding Performance Award, PNNL
  • 2008, Best Research Poster award, the U.S. Department of Commerce Boulder Laboratories Diversity Council
  • 2007, the CIRES/NOAA Visiting Fellowship
  • 2002, the NCAR Advanced Study Program Summer Colloquium travel award
  • 1999, Research Excellence award, Lanzhou University
  • 1995-1998, Academic Achievement Scholarship, Lanzhou University

PNNL Publications


  • Kravitz BS, D MacMartin, PJ Rasch, and H Wang. 2017. "Technical Note: Simultaneous fully dynamic characterization of multiple input-output relationships in climate models." Atmospheric Chemistry and Physics 17(4):2525-2541.  doi:10.5194/acp-17-2525-2017
  • Weijer W, M Veneziani, A Stossel, M Hecht, N Jeffery, A Jonko, T Hodos, and H Wang. 2017. "Local Atmospheric Response to an Open-Ocean Polynya in a High-Resolution Climate Model." Journal of Climate 30(5):1629-1641.  doi:10.1175/JCLI-D-16-0120.1


  • Kravitz BS, D MacMartin, H Wang, and PJ Rasch. 2016. "Geoengineering as a Design Problem." Earth System Dynamics 7(2):469-497.  doi:10.5194/esd-7-469-2016
  • Ghan SJ, M Wang, S Zhang, S Ferrachat, A Gettelman, J Griesfeller, Z Kipling, U Lohmann, H Morrison, D Neubauer, D Partridge, P Stier, T Takemura, H Wang, and K Zhang. 2016. "Challenges in Constraining Anthropogenic Aerosol Effects on Cloud Radiative Forcing Using Present-day Spatiotemporal Variability." Proceedings of the National Academy of Sciences of the United States of America 113(21):5804-5811.  doi: 10.1073/pnas.1514036113
  • Kristiansen NI, A Stohl, DJ Olivie , B Croft, OA Sovde, H Klein , T Christoudias, D Kunkel , SJ Leadbetter, YH Lee, K Zhang, K Tsigaridis, T Bergman, N Evangeliou, H Wang, PL Ma, RC Easter, Jr, PJ Rasch, X Liu, G Pitari, G Di Genova, SY Zhao, Y Balkanski, S Bauer, G Faluvegi, H Kokkola, RV Martin, JR Pierce, M Schulz, D Shindell , H Tost, and H Zhang . 2016. "Evaluation of observed and modelled aerosol lifetimes using radioactive tracers of opportunity and an ensemble of 19 global models." Atmospheric Chemistry and Physics 16(5):3525-3561.  doi:10.5194/acp-16-3525-2016
  • Liu X, PL Ma, H Wang, S Tilmes, B Singh, RC Easter, Jr, SJ Ghan, and PJ Rasch. 2016. "Description and Evaluation of a New Four-Mode Version of the Modal Aerosol Module (MAM4) within Version 5.3 of the Community Atmosphere Model." Geoscientific Model Development 9(2):505-522.  doi:10.5194/gmd-9-505-2016
  • Mahmood R, K Von Salzen, MG Flanner, M Sand, J Langner, H Wang, and L Huang. 2016. "Seasonality of Global and Arctic Black Carbon Processes in the Arctic Monitoring and Assessment Programme Models." Journal of Geophysical Research. D. (Atmospheres) 121(12):7100-7116.  doi:10.1002/2016JD024849
  • Wang M, B Xu, N Wang, J Cao, X Tie, H Wang, C Zhu, and W Yang. 2016. "Two distinct patterns of seasonal variation of airborne black carbon over Tibetan Plateau." Science of the Total Environment 573:1041-1052.  doi:10.1016/j.scitotenv.2016.08.184
  • Yang Y, LM Russell, L Xu, S Lou, MA Lamjiri, RC Somerville, AJ Miller, D Cayan, M DeFlorio, SJ Ghan, Y Liu, B Singh, H Wang, JH Yoon, and PJ Rasch. 2016. "Impacts of ENSO events on cloud radiative effects in preindustrial conditions: Changes in cloud fraction and their dependence on interactive aerosol emissions and concentrations." Journal of Geophysical Research. D. (Atmospheres) 121(11):6321-6335.  doi:10.1002/2015JD024503
  • Yoon JH, PJ Rasch, H Wang, V Vinoj, and D Ganguly. 2016. "The Role of Carbonaceous Aerosols On Short-term Variations on Precipitation Over North Africa." Atmospheric Science Letters 17(7):407-414.  doi:10.1002/asl.672
  • Zhang S, M Wang, SJ Ghan, A Ding, H Wang, K Zhang, D Neubauer, U Lohmann, S Ferrachat, T Takeamura, A Gettelman, H Morrison, YH Lee, DT Shindell, D Partridge, P Stier, Z Kipling, and C Fu. 2016. "On the characteristics of aerosol indirect effect based on dynamic regimes in global climate models." Atmospheric Chemistry and Physics 16(5):2765-2783.  doi:10.5194/acp-16-2765-2016


  • Kravitz BS, A Robock, S Tilmes, O Boucher, J English, P Irvine, A Jones, MG Lawrence, MC Maccracken, HO Muri, J Moore, U Niemeier, S Phipps, J Sillmann, T Storelvmo, H Wang, and S Watanabe. 2015. "The Geoengineering Model Intercomparison Project Phase 6 (GeoMIP6): Simulation Design and Preliminary Results." Geoscientific Model Development 8(10):3379-3392.  doi:10.5194/gmd-8-3379-2015
  • Qian Y, H Yan, Z Hou, G Johannesson, SA Klein, D Lucas, R Neale, PJ Rasch, LP Swiler, J Tannahill, H Wang, M Wang, and C Zhao. 2015. "Parametric Sensitivity Analysis of Precipitation at Global and Local Scales in the Community Atmosphere Model CAM5." Journal of Advances in Modeling Earth Systems 7(2):382-411.  doi:10.1002/2014MS000354
  • Qian Y, TJ Yasunari, SJ Doherty, MG Flanner, WK Lau, J Ming, H Wang, M Wang, SG Warren, and R Zhang. 2015. "Light-absorbing Particles in Snow and Ice: Measurement and Modeling of Climatic and Hydrological Impact." Advances in Atmospheric Sciences 32(1):64-91.  doi:10.1007/s00376-014-0010-0
  • Smith SJ, Y Zhou, GP Kyle, H Wang, and H Yu. 2015. "A Community Emissions Data System (CEDS) for Historical Emissions." In 2015 International Emission Inventory Conference: Air Quality Challenges: Tackling the Changing Face of Emissions, April 13-16, 2015, San Diego, California.  US EPA, Washington, DC. 
  • Xiao H, S Endo, MW Wong, W Skamarock, JB Klemp, JD Fast, WI Gustafson, Jr, AM Vogelmann, H Wang, Y Liu, and W Lin. 2015. "Modifications to WRF’s dynamical core to improve the treatment of moisture for large--eddy simulations." Journal of Advances in Modeling Earth Systems 7(4):1627-1642.  doi:10.1002/2015MS000532
  • Ma PL, PJ Rasch, M Wang, H Wang, SJ Ghan, RC Easter, Jr, WI Gustafson, Jr, X Liu, Y Zhang, and HY Ma. 2015. "How Does Increasing Horizontal Resolution in a Global Climate Model Improve the Simulation of Aerosol-Cloud Interactions?" Geophysical Research Letters 42(12):5058-5065.  doi:10.1002/2015GL064183
  • Wang M, B Xu, J Cao, X Tie, H Wang, R Zhang, Y Qian, PJ Rasch, S Zhao, G Wu, H Zhao, DR Joswiak, J Li, and Y Xie. 2015. "Carbonaceous Aerosols Recorded in a Southeastern Tibetan Glacier: Analysis of Temporal Variations and Model Estimates of Sources and Radiative Forcing." Atmospheric Chemistry and Physics 15:1191-1204.  doi:10.5194/acp-15-1191-2015
  • Wang M, B Xu, SD Kaspari, G Gleixner, V Schwab, H Zhao, H Wang, and P Yao. 2015. "Century-long Record of Black Carbon in an Ice Core from the Eastern Pamirs: Estimated Contributions from Biomass Burning." Atmospheric Environment 115:79-88.  doi:10.1016/j.atmosenv.2015.05.034
  • Yan H, Y Qian, C Zhao, H Wang, M Wang, B Yang, X Liu, and Q Fu. 2015. "A New Approach to Modeling Aerosol Effects on East Asian Climate: Parametric Uncertainties Associated with Emissions, Cloud Microphysics and their Interactions." Journal of Geophysical Research. D. (Atmospheres) 120(17):8905-8924.  doi:10.1002/2015JD023442
  • Yang Q, RC Easter, Jr, P Campuzano-Jost, JL Jimenez, JD Fast, SJ Ghan, H Wang, LK Berg, M Barth, Y Liu, MKB Shrivastava, B Singh, H Morrison, J Fan, CL Ziegler, M Bela, E Apel, GS Diskin, T Mikoviny, and A Wisthaler. 2015. "Aerosol transport and wet scavenging in deep convective clouds: a case study and model evaluation using a multiple passive tracer analysis approach." Journal of Geophysical Research. D. (Atmospheres) 120(16):8448-8468.  doi:10.1002/2015JD023647
  • Zhang R, H Wang, Y Qian, PJ Rasch, RC Easter, Jr, PL Ma, B Singh, J Huang, and Q Fu. 2015. "Quantifying sources, transport, deposition, and radiative forcing of black carbon over the Himalayas and Tibetan Plateau." Atmospheric Chemistry and Physics 15(11):6205-6223.  doi:10.5194/acp-15-6205-2015
  • Zhang R, H Wang, DA Hegg, Y Qian, SJ Doherty, C Dang, PL Ma, PJ Rasch, and Q Fu. 2015. "Quantifying sources of black carbon in Western North America using observationally based analysis and an emission tagging technique in the Community Atmosphere Model." Atmospheric Chemistry and Physics 15(22):12805-12822.  doi:10.5194/acp-15-12805-2015


  • Kravitz BS, H Wang, PJ Rasch, H Morrison, and A Solomon. 2014. "Process-model Simulations of Cloud Albedo Enhancement by Aerosols in the Arctic." Philosophical Transactions. Mathematical, Physical & Engineering Sciences 372(2031):Article No. 20140052.  doi:10.1098/rsta.2014.0052
  • Qian Y, H Wang, R Zhang, MG Flanner, and PJ Rasch. 2014. "A Sensitivity Study on Modeling Black Carbon in Snow and its Radiative Forcing over the Arctic and Northern China." Environmental Research Letters 9(6):Article No. 064001.  doi:10.1088/1748-9326/9/6/064001
  • Vinoj V, PJ Rasch, H Wang, JH Yoon, PL Ma, K Landu, and B Singh. 2014. "Short-term modulation of Indian summer monsoon rainfall by West Asian dust." Nature Geoscience 7 :308-313.  doi:10.1038/NGEO2107
  • Xiao H, WI Gustafson, Jr, and H Wang. 2014. "Impact of subgrid-scale radiative heating variability on the stratocumulus-to-trade cumulus transition in climate models." Journal of Geophysical Research. D. (Atmospheres) 119(7):4192-4203.  doi:10.1002/2013JD020999
  • Kazil J, G Feingold, H Wang, and T Yamaguchi. 2014. "On the Interaction between Marine Boundary Layer Cellular Cloudiness and Surface Heat Fluxes." Atmospheric Chemistry and Physics 14(1):61-79.  doi:10.5194/acp-14-61-2014
  • Wang H, PJ Rasch, RC Easter, Jr, B Singh, R Zhang, PL Ma, Y Qian, SJ Ghan, and N Beagley. 2014. "Using an Explicit Emission Tagging Method in Global Modeling of Source-Receptor Relationships for Black Carbon in the Arctic: Variations, Sources and Transport Pathways." Journal of Geophysical Research. D. (Atmospheres) 119(12):12,888-12,909.  doi:10.1002/2014JD022297
  • Zhao C, Z Hu, Y Qian, LYR Leung, J Huang, M Huang, J Jin, MG Flanner, R Zhang, H Wang, H Yan, Z Lu, and DG Streets. 2014. "Simulating Black Carbon and Dust and their Radiative Forcing in Seasonal Snow: A Case Study over North China with Field Campaign Measurements." Atmospheric Chemistry and Physics 14(20):11475-11491.  doi:10.5194/acp-14-11475-2014


  • Kravitz BS, P Forster, A Jones, A Robock, K Alterskjaer, O Boucher, A Jenkins, H Korhonen, JE Kristjansson, HO Muri, U Niemeier, AI Partanen, PJ Rasch, H Wang, and S Watanabe. 2013. "Sea Spray Geoengineering Experiments in the Geoengineering Model Intercomparison Project (GeoMIP): Experimental Design and Preliminary Results." Journal of Geophysical Research. D. (Atmospheres) 118(19):11,175-11,186.  doi:10.1002/jgrd.50856
  • Ma PL, PJ Rasch, H Wang, K Zhang, RC Easter, Jr, S Tilmes, JD Fast, X Liu, JH Yoon, and JF Lamarque. 2013. "The Role of Circulation Features on Black Carbon Transport into the Arctic in the Community Atmosphere Model Version 5 (CAM5)." Journal of Geophysical Research. D. (Atmospheres) 118(10):4657-4669.  doi:10.1002/jgrd.50411
  • Wang H, RC Easter, Jr, PJ Rasch, M Wang, X Liu, SJ Ghan, Y Qian, JH Yoon, PL Ma, and V Vinoj. 2013. "Sensitivity of Remote Aerosol Distributions to Representation of Cloud-Aerosol Interactions in a Global Climate Model." Geoscientific Model Development 6(3):765-782.  doi:10.5194/gmd-6-765-2013
  • Yang B, Y Qian, G Lin, LYR Leung, PJ Rasch, GJ Zhang, SA McFarlane, C Zhao, Y Zhang, H Wang, M Wang, and X Liu. 2013. "Uncertainty Quantification and Parameter Tuning in the CAM5 Zhang-McFarlane Convection Scheme and Impact of Improved Convection on the Global Circulation and Climate." Journal of Geophysical Research. D. (Atmospheres) 118(2):395-415.  doi:10.1029/2012JD018213
  • Zhao C, X Liu, Y Qian, JH Yoon, Z Hou, G Lin, SA McFarlane, H Wang, B Yang, PL Ma, H Yan, and J Bao. 2013. "A Sensitivity Study of Radiative Fluxes at the Top of Atmosphere to Cloud-Microphysics and Aerosol Parameters in the Community Atmosphere Model CAM5." Atmospheric Chemistry and Physics 13:10969-10987.  doi:10.5194/acp-13-10969-2013


  • Ganguly D, PJ Rasch, H Wang, and JH Yoon. 2012. "Climate response of the South Asian monsoon system to anthropogenic aerosols." Journal of Geophysical Research. D. (Atmospheres) 117:Article No. D13209.  doi:10.1029/2012JD017508
  • Ganguly D, PJ Rasch, H Wang, and JH Yoon. 2012. "Fast and Slow Responses of the South Asian Monsoon System to Anthropogenic Aerosols." Geophysical Research Letters 39:Article No. L18804.  doi:10.1029/2012GL053043
  • Latham J, K Bower, T Choularton, H Coe, P Connolly, G Cooper, T Craft, J Foster, A Gadian, L Galbraith, H Iacovides, D Johnston, B Launder, B Leslie, J Meyer, A Neukermans, B Ormond, B Parkes, PJ Rasch, J Rush, S Salter, T Stevenson, H Wang, Q Wang, and R Wood. 2012. "Marine Cloud Brightening." Philosophical Transactions of the Royal Society of London Series B, Biological Sciences 370(10.1098/rsta.2012.0086):4217-4262.  doi:10.1098/rsta.2012.0086
  • Qian Y, CN Long, H Wang, JM Comstock, SA McFarlane, and S Xie. 2012. "Evaluation of cloud fraction and its radiative effect simulated by IPCC AR4 global models against ARM surface observations." Atmospheric Chemistry and Physics 12(4):1785-1810.  doi:10.5194/acp-12-1785-2012
  • Rosenfeld D, H Wang, and PJ Rasch. 2012. "The Roles of Cloud Drop Effective Radius and LWP in Determining Rain Properties in Marine Stratocumulus." Geophysical Research Letters 39:Article No. L13801.  doi:10.1029/2012GL052028
  • Yang Q, WI Gustafson, Jr, JD Fast, H Wang, RC Easter, Jr, M Wang, SJ Ghan, LK Berg, LYR Leung, and H Morrison. 2012. "Impact of natural and anthropogenic aerosols on stratocumulus and precipitation in the Southeast Pacific: A regional modeling study using WRF-Chem." Atmospheric Chemistry and Physics 12(18):8777-8796.  doi:10.5194/acp-12-8777-2012


  • Wang H, PJ Rasch, and G Feingold. 2011. "Manipulating marine stratocumulus cloud amount and albedo: a process-modeling study of aerosol-cloud-precipitation interactions in response to injection of cloud condensation nuclei." Atmospheric Chemistry and Physics 11(9):4237-4249.  doi:10.5194/acp-11-4237-2011
  • Chen YC, L Xue, ZJ Lebo, H Wang, RM Rasmussen, and JH Seinfeld. 2011. "A Comprehensive Numerical Study of Aerosol-Cloud-Precipitation Interactions in Marine Stratocumulus." Atmospheric Chemistry and Physics 11(18):9749-9769.  doi:10.5194/acp-11-9749-2011
  • Kazil J, H Wang, G Feingold, AD Clarke, J Snider, and AR Bandy. 2011. "Modeling chemical and aerosol processes in the transition from closed to open cells during VOCALS-REx." Atmospheric Chemistry and Physics 11(15):7491-7514.  doi:10.5194/acp-11-7491-2011
  • Yang Q, WI Gustafson, Jr, JD Fast, H Wang, RC Easter, Jr, H Morrison, YN Lee, EG Chapman, SN Spak, and MA Mena-Carrasco. 2011. "Assessing regional scale predictions of aerosols, marine stratocumulus, and their interactions during VOCALS-REx using WRF-Chem." Atmospheric Chemistry and Physics 11(23):11951-11975.  doi:10.5194/acp-11-11951-2011


  • Wang H, G Feingold, R Wood, and J Kazil. 2010. "Modelling microphysical and meteorological controls on precipitation and cloud cellular structures in Southeast Pacific stratocumulus." Atmospheric Chemistry and Physics 10(13):6347-6362.  doi:10.5194/acp-10-6347-2010
  • Feingold G, I Koren, H Wang, H Xue, and WA Brewer. 2010. "Precipitation-Generated Oscillations in Open Cellular Cloud Fields ." Nature 466(7308):849-852.  doi:10.1038/nature09314

Selected Publications


  • Wang, H., G. Feingold, R. Wood, and J. Kazil, 2010: Modeling microphysical and meteorological controls on precipitation and cloud cellular structures in Southeast Pacific stratocumulus. Atmos. Chem. Phys., 10, 6347-6362, doi:10.5194/acp-10-6347-2010.

  • Feingold, G., I. Koren, H. Wang, H. Xue, and W. A. Brewer, 2010: Precipitation-generated oscillations in open cellular cloud fields, Nature, 466, 849-852. doi:10.1038/nature09314.


  • Wang, H., and G. Feingold, 2009: Modeling open cellular structures and drizzle in marine stratocumulus. Part I: Impact of drizzle on the formation and evolution of open cells. J. Atmos. Sci., 66, 3237-3256.
  • Wang, H., and G. Feingold, 2009: Modeling open cellular structures and drizzle in marine stratocumulus. Part II: The microphysics and dynamics of the boundary region between open and closed cells. J. Atmos. Sci., 66, 3257-3275.
  • Wang, H., W. C. Skamarock, and G. Feingold, 2009: Evaluation of scalar advection schemes in the Advanced Research WRF model using large-eddy simulations of aerosol-cloud interactions. Mon. Wea. Rev., 137, 2547-2558.


  • Wang, H., and G. M. McFarquhar, 2008: Large-eddy simulations of the diurnal cycle of shallow convection and cloudiness over the tropical Indian Ocean. Quart. J. Roy. Meteor. Soc., 134, 643-661.
  • Wang, H., and G. M. McFarquhar, 2008: Modeling aerosol effects on shallow cumulus convection under various meteorological conditions observed over the Indian Ocean and implications for development of mass-flux parameterizations for climate models. J. Geophys. Res., 113, D20201, doi:10.1029/2008JD009914.


  • McFarquhar, G. M., and H. Wang, 2006: Effects of aerosols on trade wind cumuli over the Indian Ocean: model simulations. Quart. J. Roy. Meteor. Soc., 132, 821-843.


  • McFarquhar, G. M., S. Platnick, L. Di Girolamo, H. Wang, G. Wind, and G. Zhao, 2004: Tradewind cumuli statistics in clean and polluted air over the Indian Ocean from in situ and remote sensing measurements. Geophys. Res. Lett., 31, L21105, doi:10.1029/2004GL020412.

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