This biographical article relies too much on references to primary sources. Please improve this biographical article by adding secondary or tertiary sources. Contentious material about living persons that is unsourced or poorly sourced must be removed immediately, especially if potentially libelous or harmful.(January 2011)
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. Current interests include climate of extrasolar planets.