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Owen Toon

Owen Toon
Born Owen Brian Toon
May 26, 1947
Bethesda, Maryland
Residence United States
Nationality United States
Institutions NASA Ames Research Center
University of Colorado Boulder
Alma mater University of California, Berkeley
Cornell University
Doctoral advisor Carl Sagan
Notable awards H. Julian Allen Award (1983, 1988)
NASA Medal for Exceptional Scientific Achievement (1983, 1989)
Arthur Flemming Award (1985)
Leo Szilard Award for Physics in the Public Interest (1986)
Robert L. Stearns Award (2009)
Roger Revelle Medal (2011)
Spouse Margaret Tolbert

Owen Brian Toon (born May 26, 1947 in Bethesda, Maryland) is a professor of atmospheric and oceanic sciences. He is a fellow at the Laboratory for Atmospheric and Space Physics (LASP) at the University of Colorado Boulder. He received an A.B. in physics at the University of California, Berkeley in 1969 and a Ph.D. in physics at Cornell University in 1975 under Carl Sagan. His research interests are in cloud physics, atmospheric chemistry, and radiative transfer. He also works on comparing Earth and other planets such as Venus.

His research on the asteroid impact that killed the dinosaurs led to the discovery of nuclear winter due to the major decrease in temperature. The effects of nuclear winter were re-examined in a 2006 presentation at the annual meeting of the American Geophysical Union in San Francisco, where Toon and colleagues found that even a regional nuclear war could prove deadly for a large number of people. They calculated that as few as fifty detonations of Hiroshima-size bombs could kill as many as twenty million people, although it would not produce a nuclear winter. The atmospheric effects of a regional nuclear war would last several years, and would be strongest at mid-latitudes, including the United States and Europe.

He was elected a fellow of the American Meteorological Society in 1990, and a fellow of the American Geophysical Union in 1992. He received the 2011 Roger Revelle Medal from the American Geophysical Union.



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