Ralph Cicerone

Ralph Cicerone
Ralph Cicerone
	Cicerone speaking at the NAS Building in 2013
21st President of the National Academy of Sciences
	In office; July 1, 2005 – June 30, 2016
Preceded by	Bruce Alberts
Succeeded by	Marcia McNutt
4th Chancellor of the University of California, Irvine
	In office; 1998 – 2005
Preceded by	Laurel L. Wilkening
Succeeded by	Michael V. Drake
Personal details
Born	Ralph John Cicerone; May 2, 1943; New Castle, Pennsylvania, US
Died	November 5, 2016 (aged 73); Short Hills, New Jersey, US
Scientific career
Alma mater	Massachusetts Institute of Technology; University of Illinois at Urbana–Champaign;
Awards	Albert Einstein World Award of Science (2004)
Institutions	University of Michigan; Scripps Institution of Oceanography; National Center for Atmospheric Research; University of California, Irvine;
Thesis	Monte Carlo and Thomson-scatter plasma-line studies of ionospheric photoelectrons (1970)
Doctoral advisor	S. A. Bowhill

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Ralph John Cicerone (May 2, 1943 – November 5, 2016) was an American atmospheric scientist and administrator. From 1998 to 2005, he was the chancellor of the University of California, Irvine. From 2005 to 2016, he was the president of the National Academy of Sciences (NAS). He was a "renowned authority" on climate change and atmospheric chemistry, and issued an early warning about the grave potential risks of climate change.