Memorial Tributes Volume 19 (2015) / Chapter Skim
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SIDNEY A. BOWHILL
SIDNEY A. BOWHILL
Pages 23-28
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From page 24... ...
("Jack") Ratcliffe, and completed his PhD in 1954 with a dissertation entitled "Some Problems in Very Long Radio Wave Propagation." From 1953 to 1955, working in the Baddow Research Laboratories of Marconi's Wireless Telegraph Company, Ltd., Bowhill supervised projects investigating long-distance pulsed radio signals.
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From page 25... ...
The Faraday and absorption data were analyzed using generalized magneto-ionic theory and applied to rocket data to obtain electron density and collision frequency and to calibrate a Langmuir-type electron current probe that measured the fine structure of the electron density profile. To measure Faraday rotation and absorption, Bowhill and colleagues in the Aeronomy Laboratory designed and built an ingenious system for abstracting the data from a rocket shot.
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From page 26... ...
Like the IRL at Penn State during the International Geophysical Year, the Aeronomy Lab played an important role in research projects surrounding the International Year of the Quiet Sun in 1964–1965, when the sunspot cycle had ebbed to its minimum. The lab helped spearhead the Middle Atmosphere Program, a 1980s project overseen by the International Council of Scientific Unions and implemented by the Scientific Committee on Solar-Terrestrial Physics, an international organization that was based at the Aeronomy Laboratory for a while during the 1980s.
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From page 27... ...
He authored or coauthored hundreds of publications on the dynamics and chemistry of the middle atmosphere, physics and structure of the ionosphere, artificial heating of the ionosphere, statistical theory of turbulence, transient wave propagation in the ionosphere, remote sensing of the atmosphere by radar and lidar, digital signal processing, and microcomputer applications hardware and software. Among family, friends, and colleagues alike, Bowhill is remembered for his energy, intellect, creativity, and colorful character.
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From page 28... ...
: daughter Amanda Bowhill (Michael D'Addio) of San Jose and son Allan Bowhill (Joan)
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