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Peter M Downey
Hydrology and Remote Sensing Laboratory
Agronomist

Phone: (301) 504-5974
Fax: (301) 504-8931

10300 BALTIMORE AVENUE
BLDG 007 BARC-WEST
BELTSVILLE, MD 207052350

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Modification and Validation of the Gaussian Plume Model (GPM) to Predict Ammonia and Particulate Matter Dispersion Reprint Icon - (Peer Reviewed Journal)
Yang, Z., Yao, Q., Buser, M.D., Alfieri, J.G., Li, H., Torrents, A., McConnell, L., Downey, P.M., Hapeman, C.J. 2020. Modification and Validation of the Gaussian Plume Model (GPM) to Predict Ammonia and Particulate Matter Dispersion. Atmospheric Pollution Research. https://doi.org/10.1016/j.apr.2020.03.012.
Method to evaluate the age of groundwater inputs to surface waters by determining the chirality change of metolachlor ethanesulfonic acid (MESA) captured on a polar organic chemical integrative sampler (POCIS) Reprint Icon - (Peer Reviewed Journal)
Plummer, R.E., Hapeman, C.J., Rice, C., McCarty, G.W., Schmidt, W.F., Downey, P.M., Moorman, T.B., Douglass, E.A., Strickland, T.C., Pisani, O., Bosch, D.D., Elkin, K.R., Buda, A.R. 2020. Method to evaluate the age of groundwater inputs to surface waters by determining the chirality change of metolachlor ethanesulfonic acid (MESA) captured on a polar organic chemical integrative sampler (POCIS). Journal of Agricultural and Food Chemistry. 68(8):2297-2305. https://doi.org/10.1021/acs.jafc.9b06187.
Assessment of particulate matter and ammonia emissions and respective plume profiles from a commercial poultry house Reprint Icon - (Peer Reviewed Journal)
Yao, Q., Yang, Z., Li, H., Buser, M., Wanjura, J.D., Downey, P.M., Zheng, C., Craige, C., Torrents, A., Mcconnell, L., Holt, G., Hapeman, C.J. 2018. Assessment of particulate matter and ammonia emissions and respective plume profiles from a commercial poultry house. Agriculture, Ecosystems and Environment. 238:10-16. https://doi.org/10.1016/j.envpol.2018.02.039.
Using a vegetative environmental buffer to reduce the concentrations of volatile organic compounds in poultry-house atmospheric emissions - (Peer Reviewed Journal)
Yao, Q., Torrents, A., Li, H., Buser, M., McConnell, L., Downey, P.M., Hapeman, C.J. 2019. Using a vegetative environmental buffer to reduce the concentrations of volatile organic compounds in poultry-house atmospheric emissions. Journal of Food Chemistry. 66:8231-8236.
Assessing the effectiveness of vegetative environmental buffers in mitigating air pollutant emissions from poultry houses - (Abstract Only)
Yao, Q., Hapeman, C.J., Li, H., Buser, M., Alfieri, J.G., Wanjura, J.D., Mcconnell, L., Holt, G.A., Downey, P.M., Yang, Z., Torrents, A. 2016. Assessing the effectiveness of vegetative environmental buffers in mitigating air pollutant emissions from poultry houses. American Chemical Society National Meeting. AGRO 135..
Mitigating ammonia and volatile organic compounds (VOCs) emissions from poultry houses using vegetative environmental buffers - (Abstract Only)
Yao, Q., Hapeman, C.J., Li, H., Buser, M., Alfieri, J.G., Mcconnell, L., Downey, P.M., Yang, Z., Torrents, A. 2016. Mitigating ammonia and volatile organic compounds (VOCs) emissions from poultry houses using vegetative environmental buffers. ASABE Annual International Meeting. AGRO 135..
Evaluating the effectiveness of vegetative environmental buffers in mitigating particulate matter emissions from poultry houses - (Abstract Only)
Yao, Q., Hapeman, C.J., Li, H., Buser, M., Alfieri, J.G., Wanjura, J.D., Mcconnell, L., Holt, G.A., Downey, P.M., Yang, Z., Torrents, A. 2016. Evaluating the effectiveness of vegetative environmental buffers in mitigating particulate matter emissions from poultry houses. Meeting Abstract. Paper No. 162459918..
Utilizing vegetative environmental buffers to mitigate ammonia and particulate matter emissions from poultry houses - (Abstract Only)
Yao, Q., Hapeman, C.J., Mcconnell, L., Li, H., Nguyen, A., Downey, P.M., Buser, M., Holt, G.A., Prueger, J.H., Eichinger, W., Ro, K.S., Torrents, A. 2014. Utilizing vegetative environmental buffers to mitigate ammonia and particulate matter emissions from poultry houses [abstract]. American Chemical Society. AGRO 76.
Developing unique tracers to distinguish nutrient contributions from agriculture and wastewater sources in the Choptank River and Anacostia River watersheds - (Abstract Only)
Geis-Asteggiate, L., Mcconnell, L., Hapeman, C.J., Mccarty, G.W., Rice, C., Nguyen, A., Downey, P.M., Torrents, A. 2014. Developing unique tracers to distinguish nutrient contributions from agriculture and wastewater sources in the Choptank River and Anacostia River watersheds [abstract]. American Chemical Society. AGRO 480.
Metolachlor metabolite (MESA) reveals agricultural nitrate-N fate and transport in Choptank River watershed - (Peer Reviewed Journal)
McCarty, G.W., Hapeman, C.J., Rice, C., Hively, W.D., McConnell, L.L., Sadeghi, A.M., Lang, M.W., Whitall, D.R., Bialek Kalinski, K.M., Downey, P.M. 2014. Metolachlor metabolite (MESA) reveals agricultural nitrate-N fate and transport in Choptank River watershed. Science of the Total Environment. 473-474:473-482.
Relating nutrient and herbicide fate with landscape features and characteristics of 15 subwatersheds in the Choptank River Watershed - (Peer Reviewed Journal)
Hively, W.D., Hapeman, C.J., Fisher, T.R., Rice, C., Mccarty, G.W., Mcconnell, L.L., Downey, P.M., Nino De Guzman, G., Bialek Kalinski, K.M., Lang, M.W. 2011. Relating nutrient and herbicide fate with landscape features and characteristics of 15 subwatersheds in the Choptank River Watershed. Journal of Agriculture and Food Chemistry. 409:3866-3878.
Laboratory evaluation of dual-frequency multisensor capacitance probes to monitor soil water and salinity - (Peer Reviewed Journal)
Starr, J., Timlin, D.J., Downey, P.M., Mccain, I.R. 2009. Laboratory evaluation of dual-frequency multisensor capacitance probes to monitor soil water and salinity. Irrigation Science. 27:393-400.
A Comparison of Three Cold-Climate Strawberry Production Systems: Environmental Effects - (Peer Reviewed Journal)
Stevens, M.D., Black, B.L., Lea-Cox, J.D., Sadeghi, A.M., Harman-Fetcho, J., Pfeil, M., Downey, P.M., Hapeman, C.J. 2009. A Comparison of Three Cold-Climate Strawberry Production Systems: Environmental Effects. Journal of the American Society for Horticultural Science. 44(2):298-305.