Photo of Peter C. Frumhoff

Peter C. Frumhoff

Harvard University
United States
Email: frumhoff [at] fas [period/dot]

Peter C. Frumhoff served through 2021 as the longtime director of science and policy and chief climate scientist at the Union of Concerned Scientists (UCS). He is currently on sabbatical at the Harvard University Center for the Environment where he is researching the scientific bases for climate litigation. Frumhoff has published widely at the nexus of global change science, policy and sustainability, including on the climate responsibilities of fossil fuel companies, climate attribution science and the responsible governance of solar geoengineering research. He serves on the Board on Atmospheric Sciences and Climate of the National Academies of Sciences, Engineering and Medicine and was a lead author of the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC). He has taught at Stanford University, the Fletcher School of Law and Diplomacy, Harvard University and the University of Maryland. He received a PhD in ecology and MA in zoology from the University of California, Davis, and a BA in psychology from the University of California, San Diego.


Phillips, C., B. Rogers, M. Elder, S. Cooperdock, M. Moubarak and P.C. Frumhoff. (2022). “Escalating carbon emissions from North American boreal forest wildfires and the climate mitigation potential of boreal fire management.” Science Advances in press.

Merner, D. B. Franta, and P.C. Frumhoff. (2022). “Identifying gaps in climate-litigation-relevant research: An assessment from interviews with legal scholars and practitioners.” The Climate and Social Science Network.

National Academies of Sciences, Engineering, and Medicine (2021). “Reflecting Sunlight: Recommendations for Solar Geoengineering Research and Research Governance.” Washington, DC: The National Academies Press. Member, consensus study committee.

Talati, S. and P.C. Frumhoff (2020). “Strengthening Public Input on Solar Geoengineering Research: What’s Needed for Decisionmaking on Atmospheric Experiments.” Union of Concerned Scientists.

Licker, R., B. Ekwurzel, S C Doney, S R Cooley, I D Lima, R Heede and P C Frumhoff, (2019). “Attributing ocean acidification to major carbon producers.” Environmental Research Letters14.

Lo, Y.T.E., D. Mitchell, A. Gasparrini, A.M. Vicedo-Cabrera, K. L. Ebi, P.C. Frumhoff, R. J. Millar, W. Roberts, F. Sera, S. Sparrow, P. Uhe and G. Williams (2019). “Increasing mitigation ambition to meet the Paris Agreement’s temperature goal avoids substantial heat-related mortality in U.S. cities.” Science Advances 5 (6).

Stephens, J.C., Frumhoff, P.C. and Yona, L. (2018). “The role of college and university faculty in the fossil fuel divestment movement.” Elementa: Science of the Anthropocene, 6(1), p.41.

Frumhoff, P.C. and J.C. Stephens 2018. “Towards legitimacy of the solar geoengineering research enterprise.” Phil. Trans. R. Soc. A 376:20160459.

Goldman, G.T., K. Mulvey, P.C. Frumhoff, R. Sethi, S. Pferman, and H. Commoss. (2017). “A methodology for assessment of corporate responsibility on climate change: A case study of the fossil energy industry.” Journal of Environmental Investing 8:160-181.

Ekwurzel B., J. Boneham, M. W. Dalton, R. Heede, M.R. Allen, and P. C. Frumhoff. (2017). “The rise in atmospheric CO2, surface temperature and sea level from emissions traced to major carbon producers.” Climatic Change 144:579–590.

Frumhoff, P.C. and J.C. Stephens (2017). The siren call of US funding for solar geoengineering research. pp 28-31 in Burns, E., DW Keith, E. Parson, and G. Wagner, eds. “Report on the Forum on U.S. Solar Geoengineering Research.” Washington, D.C.

Frumhoff, P.C. and J.C. Stephens 2017. Commentary on “Toward a Responsible Solar Geoengineering Research Program.” Issues in Science and Technology 33, no. 4.

Mitchell, D., C. Heaviside, S. Vardoulakis, C. Huntingford, G. Masato, B. Guillod, P. Frumhoff, A Bowery, D. Wallom and M. Allen. (2016). “Attributing human mortality during extreme heat waves to anthropogenic climate change.” Environmental Research Letters 11.

Frumhoff, P. C., R. Heede and N. Oreskes (2015). “The climate responsibilities of major industrial carbon producers.” Climatic Change 132:157-171.











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