Michael J. Prather
Distinguished Professor Emeritus, Earth System Science Department
Biography
Michael J. Prather, Ph.D., is Distinguished Professor Emeritus in the Earth System Science Department at the University of California, Irvine. He served as Department Chair from 1994 to 1997, held the Fred Kavli Endowed Chair from 2002 to 2013, and was named UCI Distinguished Professor from 2016 to 2021. Prather also directed the UCI Environment Institute from 2008 to 2013 and served as a Jefferson Science Fellow at the U.S. State Department in 2005-2006. He received his Ph.D. in Astronomy from Yale University in 1976.
Prather's research focuses on atmospheric chemistry and biogeochemical cycles, particularly the composition, transport, and evolution of greenhouse gases and aerosols in the atmosphere. He has developed numerical methods and algorithms for Earth system models, including the widely-used Fast-J photolysis module. His work has examined the lifetimes and time scales of atmospheric species, stratosphere-troposphere exchange, and the chemical coupling of trace gases such as methane and nitrous oxide.
Prather is a Fellow of the American Geophysical Union (1997), AAAS (2004), and the American Meteorological Society (2024), and a Foreign Member of the Norwegian Academy of Science and Letters (1999). He has served in numerous roles for international climate assessments, including as Convening Lead Author for multiple IPCC reports (1994, 1995, 1999, 2001, 2007) and as author or lead author for World Meteorological Organization ozone assessments spanning from 1985 to 2022. He served as Editor-in-Chief of Geophysical Research Letters from 1997 to 2001 and has participated extensively in National Academies committees on atmospheric science and climate. His research has been cited over 40,000 times with an h-index of 95.
Return to topEducation
- B.S. in Mathematics, Yale University, 1969
- B.A. in Physics, Merton College, Oxford University, 1971
- M.A., Oxford University, 2009
- Ph.D. in Astronomy, Yale University, 1976
Distinctions
- Fellow, American Meteorological Society, 2024
- Fellow, AAAS, 2004
- Foreign Member, Norwegian Academy of Science and Letters, 1999
- National Associate of the National Academies, 2002
- Nobel Peace Prize to the IPCC (as Convening, Scoping, Lead Author), 2007
- Gulbenkian Prize for Humanity to the IPCC, 2022
- Vilhelm Bjerknes Medal, European Geoscience Union, 2020
- Haagen-Smit Clean Air Award, 2015
- Jacob Bjerknes Lecturer, AGU, 1996
- Fellow, American Geophysical Union, 1997
Areas of Expertise
- Atmospheric Chemistry and Climate
- Tropospheric Ozone Photochemistry
- Stratospheric Halogen Depletion
- Greenhouse Gas Biogeochemical Cycles
- Ultraviolet Water Vapor Absorption
- Nitrous Oxide Lifetime Variability
- Chemical Transport Model Development
Recent Publications
- Ramezani Ziarani M., Sinnhuber M., Reddmann T., Funke B., Bender S., Prather M., “Implementation of solar UV and energetic particle precipitation within the LINOZ scheme in ICON-ART” (opens in new tab), Geoscientific Model Development, vol. 18, pp. 7891-7905, 2025.
- Tang Q., Prather M.J., Ke Z., Xie J., Lee H.-H., Wu M., Cameron-Smith P., Wang H., Lin W., Xie S., “Interactive Gas Chemistry for Enhanced Science Capabilities of the Energy Exascale Earth System Model Version 3” (opens in new tab), Journal of Advances in Modeling Earth Systems, vol. 17, 2025.
- Xie J., Tang Q., Prather M., Richter J., Zhang S., “Disentangling the chemistry and transport impacts of the quasi-biennial oscillation on stratospheric ozone” (opens in new tab), Atmospheric Chemistry and Physics, vol. 25, pp. 9315-9333, 2025.
- Prather M.J., Gettelman A., Penner J.E., “Trade-offs in aviation impacts on climate favour non-CO2 mitigation” (opens in new tab), Nature, vol. 643, pp. 988-993, 2025.
- Prather M.J., “Calibrating the Tropospheric Air and Ozone Mass” (opens in new tab), Agu Advances, vol. 6, 2025.
- Wilson C.P., Prather M.J., “Gridded surface O3, NOx, and CO abundances for model metrics from the South Korean ground station network” (opens in new tab), Atmospheric Measurement Techniques, vol. 18, pp. 1757-1769, 2025.
- Sun, Q., Joos, F., Lienert, S., Berthet, S., Carroll, D., Gong, C., Prather, M., “The modeled seasonal cycles of surface N2O fluxes and atmospheric N2O” (opens in new tab), Global Biogeochemical Cycles, vol. 38, 2024.
- Prather, M. J., “The spillover of tropospheric ozone increases has hidden the extent of stratospheric ozone depletion by halogens” (opens in new tab), AGU Advances, vol. 5, 2024.
- Prather, M.J., Xin Zhu, “Lifetimes and timescales of tropospheric ozone” (opens in new tab), Elementa: Science of the Anthropocene, vol. 12, no. 1, pp. 00112, 2024.
- Prather, M. J., Lei Zhu, “Resetting tropospheric OH and CH4 lifetime with ultraviolet H2O absorption” (opens in new tab), Science, vol. 385, pp. 201–204, 2024.
- Prather M.J., Zhu X., “Lifetimes and timescales of tropospheric ozone: Global metrics for climate change, human health, and crop/ecosystem research” (opens in new tab), Elementa, vol. 12, 2024.
- Colleen B. Baublitz, A.M. Fiore, M.J. Prather, “An observation-based, reduced-form model for oxidation in the remote marine troposphere” (opens in new tab), Proceedings of the National Academy of Sciences of the United States of America, vol. 120, no. 34, pp. 1-10, 2023.
- M. J. Prather, Hao Guo, Xin Zhu, “Deconstruction of tropospheric chemical reactivity using aircraft measurements: the ATom data” (opens in new tab), Earth System Science Data, vol. 15, pp. 3299–3349, 2023.
- M. J. Prather, L. Froidevaux, N. J. Livesey, “Observed changes in stratospheric circulation: decreasing lifetime of N2O, 2005–2021” (opens in new tab), Atmospheric Chemistry and Physics, vol. 23, pp. 843–849, 2023.
- J.-C. Golaz, L. P. Van Roekel, X. Zheng, A. F. Roberts, J. D. Wolfe, W. Lin, M.J. Prather, “The DOE E3SM Model version 2: Overview of the physical model and initial model evaluation” (opens in new tab), Journal of Advances in Modeling Earth Systems, vol. 14, 2022.
- M. J. Prather, “CO₂ surface variability: from the stratosphere or not?” (opens in new tab), Earth System Dynamics, vol. 13, pp. 703–709, 2022.
- D. J. Ruiz, M.J. Prather, “From the middle stratosphere to the surface, using nitrous oxide to constrain the stratosphere–troposphere exchange of ozone” (opens in new tab), Atmospheric Chemistry and Physics, vol. 22, pp. 2079–2093, 2022.
- Ruiz, Daniel J., Prather, Michael J., Strahan, Susan E., Thompson, Rona L., Froidevaux, Lucien, Steenrod, Stephen D., “How atmospheric chemistry and transport drive surface variability of N₂O and CFC-11” (opens in new tab), Journal of Geophysical Research: Atmospheres, vol. 126, 2021.
- Tang, Q., Prather, M.J., Hsu, J., Ruiz, D.J., Cameron-Smith, P.J., Xie, S., Golaz, J.-C., “Evaluation of the interactive stratospheric ozone (O3v2) module in the E3SM version 1 Earth system model” (opens in new tab), Geoscientific Model Development, vol. 14, pp. 1219–1236, 2021.
Most Cited Publications
- Tian, H., Xu, Rongting, Canadell, Josep G., Thompson, Rona L., Winiwarter, Wilfried, Suntharalingam, Parvadha, Davidson, Eric A., Ciais, Philippe, Jackson, Robert B., Janssens-Maenhout, Greet, Prather, Michael J., “A comprehensive quantification of global nitrous oxide sources and sinks” (opens in new tab), Nature, vol. 586, pp. 248–256, 2020.
- J.A. Logan, M.J. Prather, S.C. Wofsy, M.B. McElroy, “Tropospheric chemistry: a global perspective” (opens in new tab), Journal of Geophysical Research, vol. 86, pp. 7210-7254, 1981.
- O. Wild, X. Zhu, M. J. Prather, “Fast-J: Accurate simulation of in- and below-cloud photolysis in tropospheric chemical models” (opens in new tab), Journal of Atmospheric Chemistry, vol. 37, pp. 245-282, 2000.
- M.J. Prather, C.D. Holmes, J. Hsu, “Reactive greenhouse gas scenarios: Systematic exploration of uncertainties and the role of atmospheric chemistry” (opens in new tab), Geophysical Research Letters, vol. 39, pp. L09803, 2012.
- Price, C., J. Penner, M. Prather, “NOₓ from lightning 1. Global distribution based on lightning physics” (opens in new tab), Journal of Geophysical Research Atmospheres, vol. 102, pp. 5929-5941, 1997.
- Jacob, D.J., M.J. Prather, P.J. Rasch, “Evaluation and intercomparison of global atmospheric transport models using ²²²Rn and other short-lived tracers” (opens in new tab), Journal of Geophysical Research Atmospheres, vol. 102, pp. 5953-5970, 1997.
- M.J. Prather, J. Hsu, N.M. DeLuca, C.H. Jackman, L.D. Oman, A.R. Douglass, E.L. Fleming, S.E. Strahan, S.D. Steenrod, O.A. Søvde, I.S.A. Isaksen, L. Froidevaux, B. Funke, “Measuring and modeling the lifetime of nitrous oxide including its variability” (opens in new tab), Journal of Geophysical Research, vol. 120, pp. 5693-5705, 2015.
- M. Prather, M. McElroy, S. Wofsy, G. Russell, D. Rind, “Chemistry of the global troposphere: fluorocarbons as tracers of air motion” (opens in new tab), Journal of Geophysical Research, vol. 92, pp. 6579-6613, 1987.
- Michael Prather, Michael Gauss, Terje Berntsen, Ivar Isaksen, Jostein Sundet, Isabelle Bey, Guy Brasseur, Frank Dentener, Richard Derwent, David Stevenson, Lee Grenfell, Didier Hauglustaine, Larry Horowitz, Daniel Jacob, Loretta Mickley, Mark Lawrence, Rolf von Kuhlmann, Jean-Francois Muller, Giovanni Pitari, Helen Rogers, et al., “Fresh air in the 21st Century?” (opens in new tab), Geophysical Research Letters, vol. 30, no. 2, pp. 1100, 2003.
Contact Information
Email: mprather@uci.edu
Phone: (949) 824-5838
Address: 3232 Croul Hall, Irvine, CA 92697-3100
Return to topThis profile was created with the help of AI.
Last updated on 2/18/2026.