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Haley Royer

Department of Environmental Sciences and Engineering

Gillings School of Global Public Health

University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599

Email: hmroyer@unc.edu

Interests

The interaction of wildfire emissions and dust within cloud droplets.

Education

Bachelor of Science: Geological Sciences, University of Southern California (2013-2016)

Ph.D.: Atmospheric Science, University of Miami Rosenstiel School (2018-2023)

Projects

I study secondary formation pathways of brown carbon. Specifically, I’m interested in the production of brown carbon aerosols from the oxidation of gaseous wildfire emissions within cloud droplets, and the potential for dust to affect this formation mechanism.

Publications

  • Royer, H.M., D. Mitroo, S.M. Hayes, S.M. Haas, K.A. Pratt, P.L. Blackwelder, T.E. Gill, C.J. Gaston. “The Role of Hydrates, Competing Chemical Constituents, and Surface Composition on ClNO2 Formation.” Environmental Science & Technology.   2021. Link.   
  • Royer, H. M., Pöhlker, M. L., Krüger, O., Blades, E., Sealy, P., Lata, N. N., Cheng, Z., China, S., Ault, A. P., Quinn, P. K., Zuidema, P., Pöhlker, C., Pöschl, U., Andreae, M., and Gaston, C. J. “African smoke particles act as cloud condensation nuclei in the wintertime tropical North Atlantic boundary layer over Barbados”, Atmos. Chem. Phys., 23, 981–998, https://doi.org/10.5194/acp-23-981-2023, 2023. Link. 
  • Royer, H.M., M. Sheridan, H. Elliott, A. Ault, N. Lata, Z. Cheng, S. China, Z. Zhu, C. Gaston. “African dust transported to Barbados in the Wintertime Lacks Indicators of Chemical Aging”. In Progress.  
  • Royer, H.M., M. Sheridan, H. Elliott, A. Ault,  K. Popendorf, A Oehlert, E. Blades, P. Sealy, Z. Zhu, N. Lata, Z. Cheng, S. China, C. Gaston. “Nutrient Availability in Long-Range Transported Mineral Dust and Smoke Aerosols from Africa”. In Progress.  
  • Gaston, C.J.*, H.M. Royer*, R.J. Leibensperger III, D. Maizel, H. Solo-Gabriele, L.E. Brand, R.G. Zhai, A.J. Caban-Martinez, K.J. Popendorf. “Filtration Efficiency of Air Conditioner Filters and Face Masks Used to Limit Exposure to Aerosolized Harmful Algal Toxins.” Aerosols and Air Quality Research. 2021. Link. 
    • *Co-First Authors 
  • Mira Pohlker, C. Pohlker, J. Quaas, J. Muelmenstaedt, A. Pozzer, M. Andreae, K. Block, H. Coe, B. Ervens, P. Gallimore, C. Gaston, S. Gunthe, S. Henning, H. Herrmann, O. Kruger, G. Mcfiggans, L. Poulain, S. Raj, E. Reyes-Villegas, H. Royer, D. Walter, Y. Wang, U. Poschl. “Global organic and inorganic aerosol hygroscopicity and its effect on radiative forcing.” Nature Communications. 2023. Link. 
  • Das, Sourav, B.V. Miller, J. Prospero, C.J. Gaston, H.M. Royer, E. Blades, P. Sealy, S. Chellam. “Coupling Sr-Nd-Hf isotope ratios and elemental analysis to accurately quantify North African dust contributions to PM2.5 in a complex urban atmosphere by reducing mineral dust collinearity.” Environmental Science and Technology. 2022. Link.  
  • Quin, P.K., E. Thompson, D.J. Coffman, S. Baidar, L. Bariteau, T.S. Bates, S. Bigorre, A. Brewer, G. de Boer, S.P. de Szoeke, K. Drushka, G.R. Foltz, J. Intrieri, S. Iyer, C.W. Fairall, C.J. Gaston, F. Jansen, J.E. Johnson, O.O. Kruger, R.D. Marchbanks, K.P. Moran, D. Noone, S. Pezoa, R. Pincus, A.J. Plueddemann, M.L. Pohlker, U. Poschl, E. Quinones Melendez, H.M. Royer, M. Szczodrak, J. Thomson, L.M. Upchurch, C. Zhang, D. Zhang, P. Zuidema. “Measurements from the RV Ronald H. Brown and related platforms as part of the Atlantic Tradewind Ocean-Atmosphere Mesoscale Interaction Campaign (ATOMIC).” Earth System Science Data. 2021. Link. 
  • Hu, J., J. Liu, Y. Zhu, Z. Diaz-Perez, M. Sheridan, H. Royer, R. Leibensperger III, D. Maizel, L. Brand, K.J. Popendorf, C.J. Gaston, R.G. Zhai. “Exposure to Aerosolized Algal Toxins in South Florida Increases Short- and Long-Term Health Risk in Drosophila Model of Aging.” Toxins 2020, 12, 787. Link.