Talking with guys in the field (not politically motivated), I find that there is really hard evidence that indeed we are warming.
Again on what time scale!! Random variation about an overall trend does not make for change in earth's climate.
Ice Ages & Astronomical Causes Origin of the 100 kyr Glacial Cycle Figure 1-1 Global warming Figure 1-2 Climate of the last 2400 years
Figure 1-3 Climate of the last 12,000 years Figure 1-4 Climate of the last 100,000 years Figure 1-5 Climate for the last 420 kyr, from Vostok ice |
Another that may be of interest to you specifically:
Spectrum of 100-kyr glacial cycle: Orbital inclination, not eccentricity Origin of the 100 kyr Glacial Cycle
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Along with some rather interesting observations by others:
http://www.newscientistspace.com/article/dn9228-mysterious-glowing-clouds-targeted-by-nasa.html
Mysterious glowing clouds targeted by NASA
26 May, 2006High-altitude noctilucent clouds have been mysteriously spreading around the world in recent years (Image: NASA/JSC/ES and IA)
http://newton.ex.ac.uk/aip/physnews.252.html#1
INTERPLANETARY DUST PARTICLES (IDPs) are deposited on the Earth at the rate of about 10,000 tons per year. Does this have any effect on climate? Scientists at Caltech have found that ancient samples of helium-3 (coming mostly from IDPs) in oceanic sediments exhibit a 100,000-year periodicity. The researchers assert that their data, taken along the Mid-Atlantic Ridge, support a recently enunciated idea that Earth's orbital inclination varies with a 100-kyr period; this notion in turn had been broached as an explanation for a similar periodicity in the succession of ice ages. (K.A. Farley and D.B. Patterson, Nature, 7 December 1995.)
Farley & Patterson 1998, http://www.elsevier.com/gej-ng/10/20/36/33/37/32/abstract.html
Farley http://www.gps.caltech.edu/~farley/
Farley http://www.elsevier.nl/gej-ng/10/18/23/54/21/49/abstract.html
http://www.publicaffairs.noaa.gov/pr96/dec96/noaa96-78.html
ABRUPT CLIMATE CHANGE DURING LAST GLACIAL PERIOD COULD BE TIED TO DUST-INDUCED REGIONAL WARMING
Preliminary new evidence suggests that periodic increases in atmospheric dust concentrations during the glacial periods of the last 100,000 years may have resulted in significant regional warming, and that this warming may have triggered the abrupt climatic changes observed in paleoclimate records, according to a scientist at the Commerce Department's National Oceanic and Atmospheric Administration. Current scientific thinking is that the dust concentrations contributed to global cooling.
And your point is?
Thanks for the intormation. It sure beats take-my-word-for-it "science."
Peak heat waves where during the time of Rome, Cathedrals and not even as hot as those times is the present global warming. Some how I would like to use your charts in a comedy skit.
Figure 1.2 - Warmer is better?
I read a review in a geophysical trade magazine (The Leading Edge) that had a review on a book entitled "Plows, Plagues, and Petroleum: How Humans Took Control of Climate" by W.F. Ruddiman, ISBN 0-691-12164-8, princeton University Press. (Might be up your alley?)
The reviewers give him a thumbs-up on the long-ago history (farming, domestigation of animals, etc,. that influenced warming, the plagues, etc.)