G. Historical Records Support that the Earth is Currently in a Long Term Cooling Period.
Numerous temperature plots have been made from ice cores and fossil sediments. The Glen Fergus graph goes back 500 millions of years. [Veizer, J. et al. (1999) 87Sr/86Sr, d13C and d18O Evolution of Phanerozoic Seawater. Chem. Geol. 161, 59-88; and Veizer J, Godderis Y, and Francois L, (2000) Evidence for decoupling of atmospheric CO2 and global climate during the Phanerozoic eon, Nature, Vol 408 pgs. 698-701. http://dx.doi.org/10.1038/35047044]
This figure shows that between 500 and 7.5 million years ago the average temperature was about 6 to 7 degrees warmer than it is today. Between 7.5 and 1 million years ago, the average temperature is about =1 degree warmer. A chart by Robert Rohde going back 5 million years shows that between 5.5 and 3.5 million years ago, the world was about +4.5 °C warmer. The zero line was different than the Glen Fergus chart above. It shows that from3 million years to present that the earth as reflected by the Vostock ice sheet in East Antarctica has been getting cooler by about 3.5°C.
Another plot going back 5 millions of years provides more detailed in the fluctuation record. [Lisiecki, L, Raymo, M. (January 2005), “A Pliocene-Pleistocene stack of 57 globally distributed benthic d18O records”, Paleoceanography. 20 (1): PA1003; updated Lisiecki, & L; Raymo, M. (May 2005), correction to “A Pliocene-Pleistocene stack of 57 globally distributed benthic δ18O records“, Paleoceanography. 20 (2): PA200; data: doi:10.1594/PANGAEA.704257; .Petit, J. ; et. al (1999). “Climate and Atmospheric History of the Past 420,000 years from the Vostok Ice Core, Antarctica”, Nature. 399 (6735): 429–436.]
This figure illustrates a continuing cooling longterm downslope to the present day. It is only in the last several hundred thousand years (a very short period) that the temperature has began to level off or increase, and all within the normally expected deviations or fluctuations as set forth in item E.