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Edwin Lee Dunnavan

Edwin Lee Dunnavan

Edwin Lee Dunnavan

Research
Scientist II

dunnavel@ou.edu
edwin.dunnavan@noaa.gov
National Weather Center 4907


  • PhD, Meteorology and Atmospheric Science, The Pennsylvania State University
  • BS, Physics, James Madison University

  • DRARSR

Dr. Edwin Lee Dunnavan's research focuses on using weather radars to understand the properties of precipitation and developing algorithms that utilizes radar data. He has helped developed a number of algorithms including a surface hydrometeor classification and snow nowcasting algorithm. In addition, he has extensively studied and provided theoretical equations that describe the shapes of snow particles and the aggregation process.


  • Dual-polarization radar
  • Numerical Weather Prediction
  • Cloud and Precipitation Microphysics

  • Weather Radar and Observations

  • Dunnavan, E. L. and A. V. Ryzhkov, 2023: Simple analytical expressions for steady-state vapor growth and collision-coalescence particle size distribution parameter profiles, J. Atmos. Sci., 80, 2531–2544, https://doi.org/10.1175/JAS-D-23-0052.1.
  • Dunnavan, E. L., and Coauthors, 2023: High-resolution snowstorm measurements and retrievals using cross-platform multi-frequency and polarimetric radars, Geophys. Res. Letters, 50, e2023GL103692,https://doi.org/10.1029/2023GL103692.
  • Carlin, J. T., E. L. Dunnavan, A. V. Ryzhkov, and M. Oue, 2022: Impacts of vertical nonuniform beamfilling on the observability of secondary ice production due to sublimation, J. Atmos. Oceanic Technol., 40, 65–84,  https://doi.org/10.1175/JTECH-D-22-0076.1.
  • Dunnavan, E. L., and Coauthors, 2022: Radar retrieval evaluation and investigation of dendritic growth layer polarimetric signatures in a winter storm, J. Appl. Meteor. Climatol., 61, 1684–1711,  https://doi.org/10.1175/JAMC-D-21-0220.1.
  • Dunnavan, E. L., 2021: How snow aggregate ellipsoid shape and orientation variability affects fall speed and self-aggregation rates. J. Atmos. Sci., 78, 51–73, https://doi.org/10.1175/JAS-D-20-0128.1.
  • Dunnavan, E. L., Z. Jiang, J. Y. Harrington, J. Verlinde, K. Fitch, and T. J. Garrett, 2019: The shape and density evolution of snow aggregates. J. Atmos. Sci., 76, 3919–3940, https://doi.org/10.1175/JAS-D-19-0066.1.
  • Dunnavan, E. L., and Z. Jiang, 2019: A General Method for Estimating Bulk 2D Projections of Ice Particle Shape: Theory and Applications. J. Atmos. Sci., 76, 305--332, https://doi.org/10.1175/JAS-D-18-0177.1.
  • 40th conference on Radar Meteorology,  American Meteorological Society (AMS) Radar, Minneapolis, MN, USA: September, 2023. High-resolution snowstorm measurements and retrievals using cross-platform multi-frequency and polarimetric radars (oral)
  • European Radar Conference (ERAD), Locarno Switzerland: September 2022
  • Improved Dual Polarization Radar Retrievals of Bulk Ice Microphysical Parameters (poster)
  • Combining Dual-Polarization Radar with Lagrangian Trajectories and a Spectral Bin Microphysics Model to Improve Snow Nowcasting (poster)
  • 3rd International Summer Snowfall Workshop (virtual): September 2021 
  • Simulating winter storm dual-polarization radar signatures using the Ice-Spheroids Habit Model with Aspect-Ratio EvoLution (ISHMAEL) WRF microphysics scheme with improved aggregation (oral)
  • Radar retrieval evaluation and investigation of dendritic growth layer polarimetric signatures in a winter storm (poster)