Zach Weller Assistant Professor

Office: Spruce Hall 24

Phone: (970) 491-6682


Google Scholar:


  • PhD, Statistics, Colorado State University
  • BA, Mathematics, Concordia College (MN)


I work as a statistical consultant in the Graybill Statistics Laboratory. I am broadly interested in applied statistics for solving problems in and related to ecology, environmental health, energy, biology, wildlife management, animal science, and the environment. I am also interested in scientific communication, the intersection of science and policy, and statistics education.


An approach for calibrating laser-based N2O isotopic analyzers for soil biogeochemistry researchEmily R. Stuchiner, Zach Dennis Weller, Joe Charles von Fischer Rapid Communications in Mass Spectrometry, 3, 2021.
Impact of the wood-burning Justa cookstove on fine particulate matter exposure: A stepped-wedge randomized trial in rural HondurasMegan L. Benka-Coker, Bonnie N. Young, Joshua Keller, Ethan Sheppard Walker, Sarah P. Rajkumar, John Volckens, Nicholas Anthony Edward Good, Casey William Quinn, Christian L'Orange, Zach Dennis Weller, others Science of The Total Environment, 2021.
A national estimate of methane leakage from pipeline mains in natural gas local distribution systemsZach Dennis Weller, Steven P. Hamburg, Joe Charles von Fischer Environmental Science & Technology, 14, 2020.
From unloading to trimming: studying bruising in individual slaughter cattleHelen Carter Kline, Zach Dennis Weller, Temple Grandin, Ryan Algino, Lily Nowell Edwards-Callaway Translational Animal Science, 3, 2020.
Methane mapping, emission quantification, and attribution in two European cities: Utrecht (NL) and Hamburg (DE)Hossein Maazallahi, Julianne M. Fernandez, Malika Menoud, Daniel Zavala-Araiza, Zach Dennis Weller, Stefan Schwietzke, Joe Charles von Fischer, Hugo Denier van der Gon, R\"ockmann, Thomas Atmospheric Chemistry and Physics, 23, 2020.
Preliminary Exploration of the Accuracy of Visual Evaluation in Estimating Actual Bruise-Trim Weight of Beef CarcassesHelen Carter Kline, Keith Belk, Lily Nowell Edwards-Callaway, Ryan Algino, Temple Grandin, Zach Dennis Weller Meat and Muscle Biology, 1, 2020.
A nonparametric spectral domain test of spatial isotropyZachary D. Weller, Jennifer A. Hoeting JOURNAL OF STATISTICAL PLANNING AND INFERENCE, 2020.
Associations Between Bioaerosol Exposures and Lung Function Changes Among Dairy Workers in ColoradoSheena Elizabeth Martenies, Joshua William Schaeffer, Grant Joseph Erlandson, Mary T. Bradford, Jill A. Poole, Ander Ander Wilson, Zach Dennis Weller, Stephen J. Reynolds, Sheryl L. Magzamen Journal of Occupational & Environmental Medicine, 2020.
An open source algorithm to detect natural gas leaks from mobile methane survey dataZachary D. Weller, Duck Keun Yang, von Fischer, Joseph C. PLOS ONE, 2, 2019.
An open source algorithm to detect natural gas leaks from mobile methane survey dataZach Dennis Weller, Duck Keun Yang, Joe Charles von Fischer PLOS ONE, 2, 2019.