Reality Check: Local Warmers Please Provide Explanation

Russ Steele

Scientist have two long temperature records that go beyond the 300 year of temperatures using the mercury thermometer. One is the ice cores from the arctic and antarctic glaciers, the other is tree rings from fossilized trees.  Assuming that the tree ring analysis is consistent with good scientific practice. Long time readers of my blogs, Watts Up With That and Climate Audit know about the “hockey stick” tree ring fraud.

Two studies, one tree ring and the other ice core have come to may attention. Both signal a long term cooling, with past warm periods much warmer than we experienced in the 1980s and 1890s during a warm phase PDO and a very active sun. As you look at the following graphs you can see the warm periods and the following cold periods. The planet warms and then it cools, on a regular cycle. We just completed a warm cycle and are now we are on the cusp of a long down slope cooling cycle. But, I digress.

Here are the two graphic I mentioned above. The first by Grootes, P.M. (et al), “Comparison of oxygen isotope records from the GISP2 and GRIP Greenland ice cores,” Nature, 366, 1993, pp. 552-4

The second is a more recent study of tree-ring which concludes that not only has our climate often been noticeably hotter than today, temperatures have actually been on a falling trend for the past 2,000 years.

Orbital forcing of tree-ring data Jan Esper, (et al) Nature Climate Change (2012) Published online 08 July 2012

Note that both of the studies, from different sources and process show a long term cooing trend.

Now, I would like to hear from our local warmers who are claiming that humans are responsible for the unprecedented global warming. When is fact the earth has warmed and cooled many times in the past without any human intervention. So, why is the current warming human caused?  How do you know? What evidence do you have that refutes the two graphics above?  Please post your results in the comments.


About Russ Steele
Freelance writer and climate change blogger. Russ spent twenty years in the Air Force as a navigator specializing in electronics warfare and digital systems. After his service he was employed for sixteen years as concept developer for TRW, an aerospace and automotive company, and then was CEO of a non-profit Internet provider for 18 months. Russ's articles have appeared in Comstock's Business, Capitol Journal, Trailer Life, Monitoring Times, and Idaho Magazine.

7 Responses to Reality Check: Local Warmers Please Provide Explanation

  1. Arthur M. Day. says:

    Well, Russ, I expect to hear crickets, that’s great, I like to hear crickets.

  2. Steve Frisch says:

    Its simple Russ, I think your people just made those graphs up, using bad data, and that the scientists who did it have a secret agenda to leverage their research to get funding from American businesses so they can eat bon-bons and spend their kids to Choate.

  3. Hark, do I hear crickets?

  4. Then there’s “Celestial driver of Phanerozoic climate?” by astrophysicist Nir Shaviv and noted geochemist Jan Veizer that found a 500+ million year correlation between galactic cosmic ray flux and equatorial oceanic temperatures. Veizer was about to abandon his ocean temperature proxy studies because they didn’t match anything, including the CO2 that he expected it to track somewhat (the correlation was poor), and it was an email from Shaviv telling him he had a match with GCR and position in the galaxy.

    Poor Frisch, all he can do is try to turn contrary news into some bizarre rightwing conspiracy fetish. After all, the Frischs think, the consensus among climate scientists fully invested in the IPCC vision is that there was no medieval or roman warm periods, and that CO2 is a major climate driver. The sad thing is the heads of the major climate science centers will privately tell folks like James Lovelock that they’re scared stiff they got the science wrong, while the let their useful idiots carry water for the “consensus”.

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