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2011-11-16T03:23:18Z

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'''John Knox''' is a [[meteorologist]] who researches clear-air turbulence (CAT) and who also received media attention for discussing ways of calculating the [[mathematical constant]] [[e (mathematical constant)|''e'']], together with inventor [[Harlan J. Brothers]].

Knox grew up in Birmingham, AL, where as a high-school senior at Huffman High in Birmingham he was honored as a U.S. Presidential Scholar.<ref>http://www.presidentialscholars.org/</ref><ref>http://www2.ed.gov/programs/psp/index.html</ref> He went to college at the University of Alabama at Birmingham and received his Ph.D. in atmospheric sciences from the University of Wisconsin-Madison. He was a post-doctoral fellow at [[NASA]] [[Goddard Institute for Space Studies]], and taught meteorology at [[Valparaiso University]] in [[Indiana]] before moving to the University of Georgia in 2001.<ref name="uab" /><ref name="maa" />

In 1997, Brothers sent some college-level expression for ''e'' to [[National Public Radio]]'s program "Science Friday".<ref name="maa">{{cite web|title=Ivars Petersons MathTrek — Hunting e|url=http://www.maa.org/mathland/mathtrek_11_9_98.html|accessdate=February 15, 2008}}</ref> Knox's wife Pam, an intern at "Science Friday" during Knox's post-doc at NASA/GISS, told them to Knox, who confirmed them.<ref name="uab">{{cite web|title=To "e" or Not To "e"? That's a Constant Question|url=http://main.uab.edu/show.asp?durki=25350|accessdate=February 15, 2008}}</ref><ref name="maa" /> Together, they derived several formulae to calculate ''e''. The formulae involve applying [[Bernoulli]]'s [[e (mathematical constant)#History|standard result]] that (1 + 1/''n'')<sup> ''n''</sup> approximates ''e'' when ''n'' becomes large, to the formula <math>\scriptstyle e \, \equiv \, e^{1/2}/e^{-1/2}</math>, which is the basis of the popular [[bilinear transform]].

Since 1995 Knox has performed research on clear-air turbulence (CAT), in particular CAT forecasting. In 2008, he co-authored (with Don McCann, and Paul Williams of the University of Reading) an article in the ''Journal of the Atmospheric Sciences'' describing a new method of CAT forecasting that received international media attention.<ref>{{cite news| url=http://www.forbes.com/2008/10/24/clear-air-turbulence-tech-sciences-cz_jf_1024turbulence.html | work=Forbes | first=Jonathan | last=Fahey | title=Turbulence Ahead! | date=October 24, 2008|archiveurl=http://archive.is/vptx|archivedate=July 31, 2012}}</ref><ref>{{cite news| url=http://news.bbc.co.uk/2/hi/uk_news/england/berkshire/7654768.stm | work=BBC News | title=Air turbulence tests 'improved' | date=October 6, 2008}}</ref> In 2010, Knox was honored by the National Weather Association with the T. Theodore Fujita Research Achievement Award for his CAT forecasting research.

Knox writes popular articles and books about meteorology, including the award-winning<ref>http://www.sa2.info/HONORS/talbot2003.html</ref> ''Meteorology: Understanding the Atmosphere'' with Steven A. Ackerman of the University of Wisconsin-Madison.

In April 2012 Knox was the only geography professor in the nation, and one of only two atmospheric scientists, included in The Princeton Review's first-ever "Best 300 Professors" list and book.<ref>http://news.uga.edu/releases/article/three-uga-professors-named-among-the-nations-best-by-princeton-review/</ref>

Knox is currently an Associate Professor in the Geography Department at the University of Georgia and the Faculty Adviser for the [[Demosthenian Literary Society]].<ref>http://geography.uga.edu/directory/profile/knox-john/</ref>

==References==
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[[Category:Year of birth missing (living people)]]
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[[Category:American meteorologists]]
[[Category:University of Alabama at Birmingham alumni]]
[[Category:University of Wisconsin–Madison alumni]]
[[Category:Valparaiso University alumni]]

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