John Thomas Walker Yu, F., Luo, G., Pryor, S. C., Pillai, P. R., Lee, S. H., Ortega, J., … Demerjian, K. L. (2015). Spring and summer contrast in new particle formation over nine forest areas in North America. Atmospheric Chemistry and Physics, 15(24), 13993–14003. https://doi.org/10.5194/acp-15-13993-2015 Pillai, P., Walker, J., Khlystov, A., & Aneja, V. (2013). Formation and growth of atmospheric particles at a forest site in the southeast US. AIP Conference Proceedings, 1527, 401–404. https://doi.org/10.1063/1.4803288 Walker, J., Spence, P., Kimbrough, S., & Robarge, W. (2008). Inferential model estimates of ammonia dry deposition in the vicinity of a swine production facility. Atmospheric Environment, 42(14), 3407–3418. https://doi.org/10.1016/j.atmosenv.2007.06.004 Aneja, V., Nelson, D. R., Roelle, P. A., Walker, J. T., & Battye, W. (2003). Agricultural ammonia emissions and ammonium concentrations associated with aerosols and precipitation in the southeast United States. Journal of Geophysical Research: Atmospheres, 108(4), 4152–4151. https://doi.org/10.1029/2002jd002271 Aneja, V., Bunton, B., Walker, J. T., & Malik, B. P. (2001). Measurement and analysis of atmospheric ammonia emissions from anaerobic lagoons. Atmospheric Environment, 35(11), 1949–1958. https://doi.org/10.1016/S1352-2310(00)00547-1 Aneja, V. P., Chauhan, J. P., & Walker, J. (2000). Atmospheric ammonia emissions from swine waste storage and treatment lagoons. In Report (Water Resources Research Institute of the University of North Carolina). Raleigh, NC: University of North Carolina Water Resources Research Institute. Walker, J. T., Aneja, V., & Dickey, D. A. (2000). Atmospheric transport and wet deposition of ammonium in North Carolina. Atmospheric Environment, 34(20), 3407–3418. https://doi.org/10.1016/S1352-2310(99)00499-9 Aneja, V., Chauhan, J. P., & Walker, J. T. (2000). Characterization of atmospheric ammonia emissions from swine waste storage and treatment lagoons. Journal of Geophysical Research Atmospheres, 105(D9), 11535–11545. https://doi.org/10.1029/2000jd900066 Walker, J., Nelson, D., & Aneja, V. (2000). Trends in ammonium concentration in precipitation and atmospheric ammonia emissions at a coastal plain site in North Carolina, U.S.A. Environmental Science and Technology, 34(17), 3527–3534. https://doi.org/10.1021/es990921d