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George A. S. Duffy

Photo of George Duffy


4800 Oak Grove Drive

Pasadena, CA 91109



Curriculum Vitae:

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Member of:

Atmospheric Physics And Weather


George is a postdoctoral researcher currently working with Derek Posselt on a two NASA funded research projects. He is studying properties of snowflakes in clouds to improve parameterizations of frozen snow in weather models and satellite retrieval algorithms, and he is studying the structure of warm fronts with satellite precipitation radars. He has two cats.


  • Ph.D in Earth and Environmental Science from Vanderbilt University (2020)
  • M.S in Atmospheric Science from the University of Illinois at Urbana Champaign (2016)
  • B.S in Physics from the University of Tennessee at Knoxville (2012)

Community Service

  • "Scientist in the Classroom" for 8th grade physical science (2019-2020)
  • Recurring guest lecturer for the 9th grade class of the School of Science and Math at Vanderbilt (2016 - 2019)

Research Interests

  • Remote sensing of frozen precipitation
  • Air-sea interactions under storms
  • In-situ analysis of frozen clouds and precipitation

Selected Publications

  1. Duffy, G. & Posselt, D. A particle size distribution function for falling snow aggregates. (Submitted to the Journal of Applied Meteorology and Climatology)
  2. Duffy, G., King, F., Bennartz, R. & Fletcher, C. G. Quantifying uncertainty in seasonal estimates of snow accumulation using CloudSat-CPR retrievals. Atmosphere 12, 363 (2021).
  3. Duffy, G. Bennartz, R., McFarquhar, G., Nesbitt, S. An Empirical Relationship Between Ku/Ka Dual Wavelength Radar and Mass Weighted Mean Diameter Derived from Collocated Radar and in-situ Measurements of Diverse Snow Clouds, Journal of Applied Meteorology and Climatology (in typesetting for publication, 2021).
  4. Duffy, G. & Bennartz, R. The Role of Melting Snow in the Ocean Surface Heat Budget. Geophys Res Lett 45, 9782–9789 (2018).