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Wrong E.O. Hulburt?

Dr. E.O. Hulburt

HQ Phone: (202) 404-6419

Email: e***@***.mil

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Naval Research Laboratory

Code 5500, 4555 Overlook Ave, SW

Washington DC, District of Columbia 20375

United States

Company Description

NRL is the corporate research laboratory for the Navy and Marine Corps and conducts a broad program of scientific research, technology and advanced development. To view the full listing of News Releases, click here. ... more

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U.S. Naval Research Laboratory

Web References (10 Total References)


Edward O. Hulburt worked out a ...

webster-alt.aip.org [cached]

Edward O. Hulburt worked out a pioneering example of such a "radiative-convective" model in 1931. Hulburt, a senior physicist at the Naval Research Laboratory, had a general interest in the structure of the upper atmosphere through his professional work on radio propagation and the ionosphere. Taking a brief excursion away from matters that interested the U.S. Navy, he carried out a one-dimensional calculation, using data on the absorption bands of CO 2 and water far better than what was known in Arrhenius's time. In his first attempt, Hulburt came up with an unreasonably high surface temperature. He realized that this was because he had considered only the transfer of radiation up through the atmosphere. If the lower atmosphere were actually so hot it would be unstable - the hot air would rise. He put in a crude measure for transfer of heat by convection. Now he got a figure that agreed with Arrhenius's rough estimate that doubling or halving the amount of CO 2 in the atmosphere would raise or lower the Earth's surface temperature several degrees

...
Unaware of the modern data that Hulburt had used, they believed that laboratory measurements at the turn of the century had proved that the CO 2 and water vapor in the atmosphere already blocked infrared radiation so thoroughly that adding more gas would make no difference.
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Critics also pointed out that Callendar, like both Arrhenius and Hulburt, had not considered how a warmer and moister planet might have more clouds, which could reflect sunlight and maintain a cooler temperature.
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Hulburt had attempted to work through this, but even if the experts had noticed his publication they would have found it too primitive to prove anything.
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Möller's model, and all the earlier calculations back to Arrhenius (aside from Hulburt's overlooked paper), had been flawed because they failed to take proper account of this basic process.(15*)
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Whereas Arrehnius had left out convection, Hulburt left out water-vapor feedback, and neither had good absorption data. My thanks to S. Manabe for comments on this. As late as 1967, when Manabe carried through the correct convection calculation, he was unaware of Hulburt's work: personal communication, Jan. 28, 2008. BACK
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Arrhenius further had inadequate data for water vapor absorption, while Callendar and Plass as well as Hulburt left out the water vapor feedback altogether.
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Hulburt (1931) . BACK


Timeline: From the November 17, 1934, issue, Science News Online, Nov. 20, 2004

www.sciencenews.org [cached]

Further proof that the layers of ionized atmosphere of the Earth from 62 to 124 miles above sea level have a fairly constant temperature, regardless of the time of day, night, or season, is presented in a report (Physical Review, Nov. 1) prepared by Dr. E.O. Hulburt of the Naval Research Laboratory.


Timeline: From the November 17, 1934, issue, Science News Online, Nov. 20, 2004

www.sciencenews.org [cached]

Further proof that the layers of ionized atmosphere of the Earth from 62 to 124 miles above sea level have a fairly constant temperature, regardless of the time of day, night, or season, is presented in a report (Physical Review, Nov. 1) prepared by Dr. E.O. Hulburt of the Naval Research Laboratory.


Timeline: From the March 15, 1930, issue, Science News Online, March 18, 2000

www.sciencenews.org [cached]

This is the suggestion just made by Dr. E.O. Hulburt of the Naval Research Laboratory, in a report to the American Physical Society on the nature of the zodiacal light.

This light can usually be seen on a dark, clear night after twilight has gone.


Timeline: From the March 15, 1930, issue, Science News Online, March 18, 2000

www.sciencenews.org [cached]

This is the suggestion just made by Dr. E.O. Hulburt of the Naval Research Laboratory, in a report to the American Physical Society on the nature of the zodiacal light.

This light can usually be seen on a dark, clear night after twilight has gone.

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