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CO2 & Temperature (also see Temperature Record)The ice-core data is frequently cited as principal evidence to argue that CO2 is the earth’s main climate driver. It is, in a way, the jewel in the crown of the theory of man made global warming. But the ice-core data does not show that CO2 drives climate. It shows, very clearly, that variations in temperature precede rises in atmospheric CO2 – not the other way round. The two phenomena are divided by a time lag of several hundred years. There is no evidence that CO2 has ever ‘driven’ the climate in the past, nor is there any compelling evidence that it is doing so now. According to global warming theory, if an enhanced greenhouse effect (from increased levels of CO2 or indeed any other greenhouse gas) is responsible for warming the earth, then the rate of temperature rise should be greatest in that part of the earth’s atmosphere known as the troposphere, specifically in the tropics. And yet the observations, from weather balloons and satellites have consistently shown that not to be the case. I urge readers to look at the Christy et al papers below. The latest one was recently published in the Journal of Geophysical Research (2007). This may seem like a rather technical issue, but it strikes at the very heart of the theory of man made global warming. The Myth of Dangerous Human-Caused Climate Change Tropospheric temperature change since 1979 from tropical radiosonde and satellite measurements” – John R. Chirsty, William B.Norris, Roy W. Spencer, Justin J. Hnilo Journal of Geophysical Research, VOL. 112, D06102 Satellite and VIZ-Radiosonde Intercomparisons for Diagnosis of Nonclimatic Influences – John R. Christy and William B. Norris Journal of Geophysical Research, Vol.109 109, D14108, doi:10.1029/2003JD004414, 2005 - an assessment of three alternatives to linear trends
for characterizing global atmospheric temperature changes Journal of Geophysical Research Vol. 109, D14108, doi:10.1029/2003JD004414, 2004 - an assessment of three alternatives to linear trends
for characterizing global atmospheric temperature changes Letters to natureStrong radiative heating due to the mixing state of black carbon in atmospheric aerosols More Information: http://www.co2science.org/scripts/CO2ScienceB2C/subject/c/co2climatehistory.jsp http://www.co2science.org/scripts/CO2ScienceB2C/articles/V4/N14/C1.jsp D.H. Douglass, B. D. Pearson, and S. F. Singer, “Altitude Dependence of Atmospheric Temperature Trends: Climate Models Versus Observations,” Geophysical Research Letters 31 (2004): L13208, DOI: 10 (1029/2004): GL020103; D. H. Douglass et al., “Disparity of Tropospheric and Surface Temperature Trends: New Evidence,” Geophysical Research Letters 31 (2004): L13207, DOI: 10 (1029/2004): GL020212 S. Fred Singer, Hot Talk, Cold Science (Oakland, CA: The Independent Institute, 1997)
De Laat and Maurellis, “Industrial C02 Emissions as a proxy.” Philip Ball, “Shake-up for Climate Models,” Nature 1 July 2002 www.nature.com/nsu/020624/020624-11.html
“For Lands Sake” www.worldclimatereport.com (17 March 2004), Commenting on A. T. J. de Laat and A. N. Maurellis, “Industrial CO2 Emissions as a Proxy for Anthropogenic Influence on Lower Tropospheric Temperature Trends,” Geophysical Research Letters 31: 105204, doi: 10.1029/2003GL019024
R. S. Lindzen et al., “Does the Earth Have an Adaptive Infrared Iris?” Bulletin of the American Meteorological Society 82 (2001): 417-32
D. H. Douglass, B. Pearson, and S. F. Singer, “Disparity of Tropospheric and Surface Temperature Trends: New Evidence,” Geophysical Research Letters 31: LI3207.doi:10.1029/2004/GL020212 (2004) Temperature RecordT. R. Oke, “City Size and the Urban Heat Island,” Atmospheric Environment 7 (1987): 769-79 W. E. Dean et al., “The Variability of Holocene Climate Change: Evidence from Varved Lake Sediments,” Science 226(1984): 1191-194 R. E. Vance et al., “7,000-Year Record of Lake-Level Change on the Northern Great Plains: A High-Resolution Proxy of Past Climate,” Geology 20 (1992):870-82 Henry Lamb, I. Darbyshire, and D. Verschueren, “Vegetation Response to Rainfall Variation and Human Impact in Central Kenya during the Past 1,100 Years,” The Holocene 13 (2003): 285-92 E. T. Brown and T. C. Johnson, “The Lake Malawi Climate Record: Links to South America.” Geological Society of America Abstracts with Programs 35, no. 6 (September 2003): 62 S. Stine, “Extreme Drought in California and Patagonia during Medieval Time,” Nature 369 (1994): 546-49 B. Schilman et al., “Global Climate Instability Reflected by Eastern Mediterranean Marine Records during the Late Holocene,” Palaeogeography, Palaeoclimatology, Palaeoecology 176 (2001): 157-76 M. M. Naurzbaev and E. A. Vaganov, “Variation on Early Summer and Annual Temperature in East Taymir and Putoran (Siberia) over the Last Two Millennia Inferred from Tree Rings,” Journal of Geophysical Research 105 (2000): 7317-326 H. Xu et al., “Temperature Variations of the last 6,000 Years Inferred from O-18 Peat Cellulose from Hongyuan, China,” Chinese Science Bulletin 47 (200): 1584 Jean. M. Grove, The Little Ice Age (Cambridge, UK: Cambridge University Press, 1988) C. J. Caseldine, “The Extent of Some Glaciers In Northern Iceland during the Little Ice Age and the Nature of Recent Deglaciation,” The Geographical Journal 151 (1985): 215-27 H. H. Lamb, Climate, History and the Future (London: Methuen, 1977), 156 L. Keigwin, “The Little Ice Age and Medieval Warm Period in the Sargasso Sea,” Science 274 (1996): 1503-508
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