Joe Rudek

Lead Senior Scientist


Areas of expertise:
Agricultural emissions to land, water, and air from livestock, rice and upland crops; methane emissions from natural gas end use; and supply chain sustainability

Dr. Rudek is a Lead Senior Scientist with Environmental Defense Fund, a position he has held since 1996. He holds a Ph.D. (1992) in environmental biology from the University of North Carolina at Chapel Hill. Dr. Rudek also holds an adjunct Associate Professorship in the Department Earth, Marine and Atmospheric Sciences at North Carolina State University.

He works across a variety of arenas within EDF’s areas of focus. He works to measure and reduce GHG and nitrogen emissions from agriculture, especially low carbon rice farming, and livestock manure management. He is also the technical lead for EDF’s work on methane emissions from natural gas end use sectors such as electric generation, industrial use, urban neighborhoods and heavy duty trucks. Dr. Rudek also provides technical guidance to EDF’s efforts on sustainable supply chains for major retailers.

Dr. Rudek lives and works in the Philadelphia area.


  • PhD and MS, Environmental Biology, University of North Carolina-Chapel Hill
  • BA, biology and chemistry, University of California-Santa Cruz

Appointments and affiliations

  • Adjunct Associate Professor, Dept. of Marine, Earth and Atmospheric Sciences, NC State University


Bradford, M.A., C.J. Carey, L. Atwood, D. Bossio, E.P. Fenichel, S. Gannet, J. Jargione, J.R.B. Fisher, E. Fuller, D.A. Kane, J. Lehmann, E.E. Oldfield, E.M. Ordway, J. Rudek, J. Sanderman, S. Wood. 2019. Soil carbon sceicne for policy and practice. Nature Sustainability. Full Text. 

Hajny, K.D., O.E., Salmon, J., Rudek, D.R., Lyon, A.A., Stuff, B.H., Stirm, R., Kaeser, C.R., Floerchinger, S., Conley, M.L., Smith, P.B., Shepson, 2019. Observations of methane emission from natural gas-fired power plants. Environmental Science & Technology, 53: 8976-8984.

Zhou, X., F.H., Passow, J., Rudek, J., von Fisher, S.P., Hamburg, J.D. Albertson, 2019. Estimation of methane emissions from the U.S. ammonia fertilizer industry using a mobile sensing approach. Elem Sci Anth, 7: 19.

Kritee, K., D. Nair, D, Zavala-Araiza, J. Proville, J. Rudek, T. Adhya, T. Loecke, T. Esteves, S. Balireddygari, O. Dava, K. Ram, S.r. Abhilash, M. Madasamy, R.V. Dokka, D. Anandaraj, D. Athiyaman, M, Reddy, R. Ahuja, S.P. Hamburg. 2018.  High nitrous oxide fluxes from rice indicate the need to manage water for both long- and short-term climate impacts. Proceedings of the National Academy of Sciences. 115:9720-9725. Full Text.

Kritee, K., J. Rudek, S.P. Hamburg, T. Adhya, T. Loecke, R. Ahuja. 2018. Reply to Yan and Akiyama: Nitrous oxide emissions from rice and their mitigation potential depend on the nature of intermittent flooding. Proceedings of the National Academy of Sciences. 115:E11206-E11207. Full Text.
Kritee, K., J. Rudek, J. Proville, T. Adhya, T. Loecke, D. Nair, R, Ahuja, and S. Hamburg. 2019. Reply to Wassmann et al: More data at high sampling from medium- and intense-intermittently flooded rice farms is crucial. Proceedings of the National Academy of Sciences. 116:1466-1467. Full Text.

Clark, N.N., D.R. Johnson, D.L. McKain, W.S. Wayne, H. Li, J. Rudek, R.A. Mongold, C. Sandoval, A. N. Covington, J.T. Hailer. 2017. Future methane emissions from the heavy-duty natural gas transportation sector for stasis, high, medium, and low scenarios in 2035, Journal of the Air & Waste Management Association, 67:12,1328-1341.

Lavoie, T.; P. Shepson, C. Gore, B. Stirm, R. Kaeser, B. Wulle, D. Lyon, J. Rudek.. 2017. Assessing the Methane Emissions from Natural Gas-Fired Power Plants and Oil Refineries. Environmental Science and Technology. Environ. Sci. Technol., 55: 3373-3381.

Rudek, J., V.P. Aneja, Y.P. Abrol. 2017. Concepts for Considerations in the Design of an Indian Integrated Nitrogen Assessment. pp:  29-56. IN: The Indian Nitrogen Assessment. Elsevier Inc. 29-56. ISBN: 978-0-12-811904-4