Gerald E. Marsh

Global Warming

IRRADIANCE VARIATIONS DUE TO ORBITAL AND SOLAR INERTIAL MOTION: THE EFFECT ON EARTH’S SURFACE TEMPERATURE

Posted on Posted in Global Warming, Physics

Variation in total solar irradiance is thought to have little effect on the Earth’s surface temperature because of the thermal time constant—the characteristic response time of the Earth’s global surface temperature to changes in forcing. This time constant is large enough to smooth annual variations but not necessarily variations having a longer period such as those due to solar inertial motion; the magnitude of these surface temperature variations is estimated.

IRRADIANCE VARIATIONS DUE TO ORBITAL AND SOLAR INERTIAL MOTION

Interglacials, Milankovitch Cycles, and Carbon Dioxide

Posted on Posted in Global Warming

The existing understanding of interglacial periods is that they are initiated by Milankovitch cycles enhanced by rising atmospheric carbon dioxide concentrations.  During interglacials, global temperature is also believed to be primarily controlled by carbon dioxide concentrations, modulated by internal processes such as the Pacific Decadal Oscillation and the North Atlantic Oscillation.  Recent Work challenges the fundamental bases of these conceptions.

Journal of Climatology, Volume 2014, Article ID 345482

http://dx.doi.org/10.1155/2014/345482

J of Climatology,2014, 345482

 

 

Climate Change: Sources of Warming in the Late 20th Century

Posted on Posted in Global Warming

The role of the North Atlantic Oscillation, the Pacific Decadal Oscillation, volcanic and other aerosols, as well as the extraordinary solar activity of the late 20th century are discussed in the context of the warming since the mid-1970s. Much of that warming is found to be due to natural causes.

PDF

A somewhat abbreviated version appears in Energy & Environment Vol. 23, No. 1, p. 95 (2012)
PDF

Scroll to top