Tom Butler

Atmospheric Ammonia Deposition: A Significant Source of Nitrogen to an Oligotrophic Lake and Its Watershed
Swaney, DP, Tom Butler, RW Howarth, R Marino, GM Beachley, and CB Baublitz. (2026) 2026. “Atmospheric Ammonia Deposition: A Significant Source of Nitrogen to an Oligotrophic Lake and Its Watershed”. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 131 (4). doi:10.1029/2025JG009389.
Long-term monitoring of precipitation chemistry in the U.S.: Insights into changes and condition
Likens, Gene E., Tom Butler, Rodger Claybrooke, Francoise Vermeylen, and Robert Larson. 2021. “Long-Term Monitoring of Precipitation Chemistry in the U.S.: Insights into Changes and Condition”. Atmospheric Environment 245. Elsevier BV: 118031. doi:10.1016/j.atmosenv.2020.118031.
Acid Rain: Causes, Consequences, and Recovery in Terrestrial, Aquatic, and Human Systems
Likens, Gene E., and Tom Butler. 2018. “Acid Rain: Causes, Consequences, and Recovery in Terrestrial, Aquatic, and Human Systems”. In Encyclopedia of the Anthropocene, 23-31. Elsevier. doi:10.1016/B978-0-12-809665-9.09977-8.
Encyclopaedia Britannica: Acid rain (2016)
Butler, Tom, and Gene E. Likens. 2016. “Encyclopaedia Britannica: Acid Rain (2016)”. In Encyclopaedia Britannica. Encyclopaedia Britannica. https://www.britannica.com/science/acid-rain.
Increasing ammonia concentration trends in large regions of the USA derived from the NADP/AMoN network
Butler, Tom, F.M. Vermeylen, C. M. Lehmann, Gene E. Likens, and M. Puchalski. 2016. “Increasing Ammonia Concentration Trends in Large Regions of the USA Derived from the NADP AMoN Network”. Atmospheric Environment 146: 132-40. doi:10.1016/j.atmosenv.2016.06.033.
Atmospheric ammonia measurements at low concentration sites in the northeastern USA: implications for total nitrogen deposition and comparison with CMAQ estimates
Butler, Tom, Roxanne Marino, Donna Schwede, Robert W. Howarth, Jed Sparks, and Kim Sparks. 2015. “Atmospheric Ammonia Measurements at Low Concentration Sites in the Northeastern USA: Implications for Total Nitrogen Deposition and Comparison With CMAQ Estimates”. Biogeochemistry 122 (2-3): 191-210. doi:10.1007/s10533-014-0036-5.
Report to NOAA Air Resources Laboratory 2013 Monitoring and Research at NADP/ AIRMoN NY67
Butler, Tom, and Gene E. Likens. 2014. “Report to NOAA Air Resources Laboratory 2013 Monitoring and Research at NADP AIRMoN NY67”. National Atmospheric Deposition Program.
Encyclopedia of Environmetrics: Acid Rain
Butler, Tom, and Gene E. Likens. 2013. “Encyclopedia of Environmetrics: Acid Rain”. In Encyclopedia of Environmetrics, 2nd ed. Chichester, UK: John Wiley & Sons, Ltd. doi:10.1002/9780470057339.vaa003.pub2.
Encyclopedia Brittanica: Acid Rain (2012)
Likens, Gene E., and Tom Butler. 2012. “Encyclopedia Brittanica: Acid Rain (2012)”. Encyclopedia Brittanica. http://www.eoearth.org/article/Acid_rain.
Encyclopedia of Global Studies: Acid Rain
Likens, Gene E., Tom Butler, and M.A. Rury. 2011. “Encyclopedia of Global Studies: Acid Rain”. In Encyclopedia of Global Studies.