Ilissa Ocko

Climate Scientist


Areas of expertise: Climate science, greenhouse gases, aerosols, methane, black carbon, climate modeling, metrics

Ilissa Ocko is a Climate Scientist at Environmental Defense Fund. She researches the implications of short-lived climate pollutants on climate change and provides scientific guidance for climate-related work. Ilissa is also committed to communicating climate change science to non-experts through visuals, journalism, and presentations.


Ilissa Ocko employs climate models to explore how short-lived climate pollutants, such as methane and black carbon, influence various climate conditions. Ilissa also works to improve metrics that compare climate impacts of various mitigation strategies. She holds a certificate in environmental policy from Princeton’s Woodrow Wilson School, has done scientific illustrations for groups like Climate Central and Weather Underground, and as an undergraduate she was a weather anchor on the university’s television network.


  • Ph.D. and M.A., Atmospheric and Oceanic Sciences, Princeton University
  • B.S.E., Earth System Science and Engineering, University of Michigan — Ann Arbor


Ocko, IB, and PA Ginoux (2017), Comparing multiple model-derived aerosol optical properties to spatially collocated ground-based and satellite measurements, Atmos. Chem. Phys., 17, 4451-4475, doi:10.5194/acp-17-4451-2017.

Ocko, IB, V Ramaswamy, Y Ming (2014), Contrasting climates responses to the scattering and absorbing features of anthropogenic aerosol forcings, J. Clim., 27, 5329-5345, doi:10.1175/JCLI-D-13-00401.1

Ocko, IB, V Ramaswamy, P Ginoux, Y Ming, and LW Horowitz (2012), Sensitivity of scattering and absorbing aerosol direct radiative forcing to physical climate factors, J. Geophys. Res., 117, D20203, doi:10.1029/2012JD018019.

Ocko, IB, Hot Seat in Our Warming World, Science, 337, 6092, p. 296, doi:10.1126/science.1224878 (2012)

Bankuti, M, B Ellis, M Frades, D Kanter, J Losh, I Ocko, J Roy-Mayhew, P Shevlin, C Sierawski, A Wasserman, J Zuckerman, D Mauzerall, Complements to carbon: Opportunities for near-term action on non-CO2 climate forcers, Policy Report, Princeton University (2011)

  • Ilissa Ocko

    Ilissa Ocko


Washington, D.C. office

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