title: Raymond Pierrehumbert
text: Raymond Thomas Pierrehumbert  is the Halley Professor of Physics at the University of Oxford. Previously, he was Louis Block Professor in Geophysical Sciences at the University of Chicago. He was a lead author on the Third Assessment Report of the IPCC (Intergovernmental Panel on Climate Change) and a co-author of the National Research Council report on abrupt climate change.
  
  Education and awards 
  He earned a degree in Physics (A.B) from Harvard College and a PhD in Aeronautics and Astronautics from the Massachusetts Institute of Technology.
  
  He was awarded a John Simon Guggenheim Fellowship in 1996, which was used to launch collaborative work on the climate of early Mars with collaborators in Paris. He is a Fellow of the American Geophysical Union (AGU) and has been named Chevalier de l'Ordre des Palmes Académiques by the Republic of France. He was elected to the American Academy of Arts and Sciences in 2015 and sits on the Science and Security Board of the Bulletin of the Atomic Scientists. In 2020, Pierrehumbert was elected a Fellow of the Royal Society.
  
  Research 
  Pierrehumbert's central research interest is how climate works as a system and developing idealized mathematical models to be used to address questions of climate science such as how the earth kept from freezing over: the faint young sun paradox.
  
  Pierrehumbert contributes to RealClimate and is a strong critic of solar geoengineering research.
  
  Personal life 
  Pierrehumbert is married to Janet Pierrehumbert, professor of Language Modeling at the University of Oxford.
  
  Selected papers
   Pierrehumbert R.T. 2002: "The Hydrologic Cycle in Deep Time Climate Problems", Nature, 419, 191–198.
   Pierrehumbert R.T. 2003: "Counting the Cost", Nature, 422 (6929), 263.
   Goodman, J.C. and R.T. Pierrehumbert 2003: "Glacial flow of floating marine ice in Snowball Earth", J. Geophys. Res., 108 (C10), 3308, .
   Alley R.B., J. Marotzke, W.D. Nordhaus, J.T. Overpeck, D.M. Peteet, R.A. Pielke Jr., R.T. Pierrehumbert, P.B. Rhines, T.F. Stocker, L. Talley and J.M. Wallace, 2003: "Abrupt Climate Change", Science, 299, 2005–2010.
   Pierrehumbert, R.T. 2004: "High levels of atmospheric carbon dioxide necessary for the termination of global glaciation", Nature, 429, 646–649.
   Pierrehumbert, R.T. 2004: "Warming the world: Greenhouse effect: Fourier’s concept of planetary energy balance is still relevant today". Nature, 432, 677.
   Pierrehumbert, R.T. 2005: "Climate dynamics of a hard snowball Earth", J. Geophys. Res., 110 (D01111), .
  
  References
  
  External links
  
   UChicago homepage
   Google Scholar page
  
  Year of birth missing (living people)
  Living people
  University of Chicago faculty
  American geophysicists
  Environmental bloggers
  MIT School of Engineering alumni
  Statutory Professors of the University of Oxford
  Fellows of the American Geophysical Union
  Fellows of Jesus College, Oxford
  Fellows of the Royal Society
  Fellows of the American Academy of Arts and Sciences
  Harvard College alumni