Douglas V. Hoyt

Douglas V. Hoyt


  • M.S., Astro-Geophysics, University of Colorado.
  • B.S.. Physics, Rensselaer Polytechnic Institute.

Source: [1]


Douglas V. Hoyt is a retired solar physicist with Raytheon Corporation.

Hoyt appears on Senator James Inhofe's list of 400+ “prominent” scientists who doubt global warming.  He is listed as one of 49 who are currently retired. Inhofe's most recent list contains over “650 international scientists.”

Stance on Climate Change

“Natural variations [in climate] must be understood before mankind's impact can be separated out.” [2]

Key Quotes

“There are several problems with the theoretical underpinnings of the standard IPCC theory of global warming due to anthropogenic greenhouse gases (AGHG)… . the upper limit on warming due to a doubling of carbon dioxide is 0.7 C and it is probably much less. The high numbers used by the IPCC are not supported by measurements.” [3]

Key Deeds

June, 2010

Hoyt is a registered endorser of the International Climate Science Coalition's (ICSC) “Climate Scientists' Register.”

Those who sign the register agree that “We, the undersigned, having assessed the relevant scientific evidence, do not find convincing support for the hypothesis that human emissions of carbon dioxide are causing, or will in the foreseeable future cause, dangerous global warming.” [1]


Hoyt co-authored The Role of the Sun in Climate Change with Kenneth H. Shatten. The book was published by the Oxford University Press.



According to a search of 22,000 academic journals, Hoyt has published over 35 peer-reviewed articles mainly in the area of solar fluctuations. Hoyt has not published any new research since 1998.

A full list of his publications is available at His most recent book was The Role of the Sun in Climate Change, published in 1997 by the Oxford University Press. 


  1. CLIMATE SCIENTISTS' REGISTER ENDORSERS,” International Climate Science Coalition. Accessed January, 2012.

  2. Douglas V. Hoyt, Kenneth H. Schatten. The Role of the sun in climate change. Page 225.

  3. Douglas Hoyt. “A CRITICAL EXAMINATION OF CLIMATE CHANGE,” Accessed January, 2012.

  4. Experts,” ICECAP. Accessed January, 2012.