Global Warming Skeptics

Full Version: Charts II
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Did you like that?

Well go HERE to see the other chart that is animated.It is GREAT!

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More charts in the link.

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From HERE and HERE

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From HERE With additional charts.

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is John Cook correct?

Look further in the link and see more charts based on FOUR published science papers.That shows a very different picture than what Mr. Cook is trying to con you on.
Here are a few of my favorites...

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The CO2 chart is from Kouwenberg, 2004. It a reconstruction of atmospheric CO2 from plant stomata. It clearly shows that pre-industrial CO2 levels routinely fluctuated from ~280 to 310-360ppmv. The post-800 AD data were also published in Kouwneberg et al., 2005. Dr. Kouwenberg attributed the 400-600 AD CO2 maximum to unspecified local environmental stresses because the high CO2 level could not be matched up with climate warming... She was relying on Mann & Jones, 2003 reconstruction. I used the temperature reconstructions from Moberg et al., 2005 and Ljungqvist 2010; neither of which was available at the time Dr. Kouwneberg published these CO2 reconstructions.

It appears that CO2 maxima and minima lag ~230 yr. behind temperature maxima and minima.

The next two charts use CO2 stomata reconstructions from Wagner et al. 2004 and Alley's GISP2 temperature reconstruction for Central Greenland...

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Once again, we can see CO2 changes lagging about 230 yr behind temperature changes. Mcelwain et al., 2002 found that a “~77 ppm decrease in atmospheric CO2 at the onset of the Younger Dryas stadial… lagged climatic cooling by ~130 yr.” The stomata data clearly support a temperature-driven carbon cycle.


Mcelwain, J. C., Mayle, F. E. and Beerling, D. J. 2002. Stomatal evidence for a decline in atmospheric CO2 concentration during the Younger Dryas stadial: a comparison with Antarctic ice core records. J. Quaternary Sci., Vol. 17 pp. 21–29. ISSN 0267-8179.

Kouwenberg, 2004. APPLICATION OF CONIFER NEEDLES IN THE RECONSTRUCTION OF HOLOCENE CO2 LEVELS. PhD Thesis. Laboratory of Palaeobotany and Palynology, University of Utrecht.

Wagner et al., 2004. Reproducibility of Holocene atmospheric CO2 records based on stomatal frequency. Quaternary Science Reviews 23 (2004) 1947–1954.

Kouwenberg et al., 2005. Atmospheric CO2 fluctuations during the last millennium reconstructed by stomatal frequency analysis of Tsuga heterophylla needles. GEOLOGY, January 2005.

Moberg, A., et al. 2005. 2,000-Year Northern Hemisphere Temperature Reconstruction. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2005-019. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA.

Alley, R.B.. 2004. GISP2 Ice Core Temperature and Accumulation Data. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series #2004-013. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA.

Ljungqvist, F.C. 2010. A new reconstruction of temperature variability in the extra-tropical Northern Hemisphere during the last two millennia. Geografiska Annaler: Physical Geography, Vol. 92 A(3), pp. 339-351, September 2010. DOI: 10.1111/j.1468-0459.2010.00399.x

Middleton, D.H., 2010. CO2: Ice Cores vs. Plant Stomata. Debunk House.


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The #1 bar is this chart is that of a warming period that started around 10,000 years ago, lasting 840+ years with a temp increase of 1.23 degrees. The #2 bar represents the subsequent cooling period, which lasted some 850 years with temps cooling a huge 3 degrees.

CH3 Headlines

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