College of Science and Health | DePaul University > Faculty & Staff > Faculty A-Z > Mark Potosnak

Mark J. Potosnak

​​View Dr. Potosnak's CV​

Classes Taught
  • Introduction to Environmental Science (ENV 101)
  • Cities and the Environment (ENV 200)
  • Earth System Science (ENV 216)
  • Global Climate Change (ENV 230)
  • Chemistry of Earth Systems (ENV 316)
Research Interests

The common theme of Mark Potosnak's research is using field observations to understand the complex interactions between the terrestrial biosphere and the atmosphere.  In particular, he designs field experiments that test hypotheses of how isoprene emissions are impacted by global change factors. Recent studies have been conducted in tropical, urban/arid, and tundra ecosystems. These ecosystems are all understudied and also more susceptible to global change factors. For example, unlike the deciduous forests characteristic of temperate ecosystems, there have been few studies on the seasonal controls of isoprene emissions for evergreen and drought deciduous tropical ecosystems. Potosnak​'s studies reveal a strong seasonality of emissions that cannot be explained solely by changes in ambient temperature and light. Preliminary research in tundra ecosystems has revealed surprisingly high isoprene emission rates and the potential for rapid increases inducted by climate change.  Finally, a recent project focused on land use change in a rapidly expanding urban area of the arid southwestern United States and was published in Atmospheric Environment.

To see Dr. Potosnak's research, follow this link:  Potosnaklab​

Select Publications
  • ​Potosnak, M.J., L. LestrougeonU and O. NunezU. 2014. Increasing leaf temperature reduces the suppression of isoprene emission by elevated CO2 concentration. Science of the Total Environment, 481: 352–359.
  • Potosnak, M.J., L. LeStourgeonU, S.G. Pallardy, K.P. Hosman, L. Gu, T. Karl, C. Geron and A.B. Guenther. 2014. Observed and modeled ecosystem isoprene fluxes from an oak-dominated temperate forest and the influence of drought stress. Atmospheric Environment, 84: 314–322
  • Potosnak, M.J. 2014. Commentary: Including the interactive effect of elevated CO2 concentration and leaf temperature in global models of isoprene emission. Plant, Cell & Environment, 37:1723–1726.
  • Potosnak, M.J., L. LeStourgeon, S.G. Pallardy, K.P. Hosman, L. Gu, T. Karl, C. Geron, A.B. Guenther. 2014. Observed and modeled ecosystem isoprene fluxes from an oak-dominated temperate forest and the influence of drought stress. Atmospheric Environment, 84: 314–322.
  • Unger N., K. Harper, Y. Zheng, N.Y. Kiang, I. Aleinov, A. Arneth, G. Schurgers, C. Amelynck, A. Goldstein, A. Guenther, B. Heinesch, C.N. Hewitt, T. Karl, Q. Laffineur, B. Langford, K. A. McKinney, P. Misztal, M. Potosnak, J. Rinne, S. Pressley, N. Schoon and D. Serça. 2013. Photosynthesis-dependent isoprene emission from leaf to planet in a global carbon-chemistry-climate model. Atmospheric Chemistry and Physics, 13: 10243–10269.
  • Pacifico, F., S. P. Harrison, C. D. Jones, A. Arneth, S. Sitch, G. P. Weedon, M. P. Barkley, P. I. Palmer, D. Serça, M. Potosnak, T.-M. Fu, A. Goldstein, J. Bai and G. Schurgers. 2011. Evaluation of a photosynthesis-based biogenic isoprene emission scheme in JULES and simulation of isoprene emissions under present-day climate conditions. Atmospheric Chemistry and Physics, 11: 4371–4389.
  • Rastetter, E.B., M. Williams, K.L. Griffin, B.L. Kwiatkowski, G.Tomasky, M.J. Potosnak, P.C. Stoy, G.R. Shaver, M. Stieglitz, J.E. Hobbie and G.W. Kling. 2010. Processing arctic eddy-flux data using a simple carbon-exchange model embedded in the ensemble Kalman filter. Ecological Applications, 20 (5): 1285–1301.
  • Papiez, M.R., M.J. Potosnak, W.S. Goliff, A.B. Guenter, S.N. Matsunaga and W.R. Stockell. 2009. The impacts of reactive terpene emissions from plants on air quality in Las Vegas, Nevada. Atmospheric Environment, 43: 4109–4123.
  • Pegoraro, E., M.J. Potosnak, R.K. Monson, A. Rey, G. Barron-Gafford and C.B. Osmond.  2007.  The effect of elevated CO2, soil and atmospheric water deficit and seasonal phenology on leaf and ecosystem isoprene emission.  Functional Plant Biology, 34 (9): 774-784.

Professional Activities
  • ​​​Selected to be a member of the Scientific Inquiry Domain committee (2012–present)
  • Selected by the university president to be the University representative for the Udall Foundation’s national scholarship competition (2010–present)
  • ​Served as a Catholic Climate Change Ambassador for the Catholic Coalition on Climate Change (2010–present)

Professional Society Memberships
  • American Geophysical Union
  • American Meteorological Society
  • Sigma Xi