Global Warming:
A Chilling Perspective

Comparison of Atmospheric Temperature with CO2
Over The Last 100 Years

|| Temperature -vs- CO2 || Global Warming || Table of Contents ||

Temperatures have increased by about 0.5° C over the last 100 years. Most of these increases occurred in the first 50 years of this time period.

Carbon dioxide (CO2) has also increased over the last 100 years-- from about 300 ppm to 370 ppm. Interestingly, the majority of these additions have occurred in the last 50 years, when temperature increases have been slowest.

Independent data from orbiting satelites have been continuosly measuring global temperatures since the 1970's and indicate that over the last 25 years there has actually been a slight decrease in overall global temperatures.

Assuming that at least part of the source of CO2 additions in the last 50 years is anthropogenic (man-made), the likely scenario is (at the level of additions involved) that CO2 concentrations in our atmosphere are an effect of temperature-- not the other way around. The perturbation of CO2 equilibrium has not had the proportional effect on temperature that greenhouse activists predict.


NOTE: All charts were plotted directly from composite data sets using Lotus 1-2-3.

  CO2 Graph Sources:

 Temperature Graph Sources:
2001-1958: South Pole Air Flask Data
1958-1220 B.P.: Law Dome, Antarctica
1220 B.P.- 2302 B.P.: Taylor Dome, Antarctica
2302 B.P.- 414k B.P.: Vostok Ice Core Data
2000-1979: Satellite stratospheric data
1979-1871: S. Hemisphere ground temp. data
1871- 422k B.P.: Vostok Ice Core Data

|| Temperature -vs- CO2 || Global Warming || Table of Contents ||


Historical Isotopic Temperature Record from the Vostok Ice Core

The data available from CDIAC represent a major effort by researchers from France, Russia, and the U.S.A.

1) Vostok ice core: a continuous isotope temperature record over the last climatic cycle (160,00 years).

Jouzel, J., C. Lorius, J.R. Petit, C. Genthon, N.I. Barkov,
V.M. Kotlyakov, and V.M. Petrov. 1987.

Nature 329:403-8.

2) Extending the Vostok ice-core record of palaeoclimate to the penultimate glacial period.

Jouzel, J., N.I. Barkov, J.M. Barnola, M. Bender, J. Chappellaz, C. Genthon, V.M. Kotlyakov, V. Lipenkov, C. Lorius, J.R. Petit, D. Raynaud, G. Raisbeck, C. Ritz, T. Sowers, M. Stievenard, F. Yiou, and P. Yiou. 1993.

Nature 364:407-12.

3) Climatic interpretation of the recently extended Vostok ice records.

Jouzel, J., C. Waelbroeck, B. Malaize, M. Bender, J.R. Petit, M. Stievenard, N.I. Barkov, J.M. Barnola, T. King, V.M. Kotlyakov, V. Lipenkov, C. Lorius, D. Raynaud, C. Ritz, and T. Sowers. 1996.

Climate Dynamics 12:513-521.

4) Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica.

Petit, J.R., J. Jouzel, D. Raynaud, N.I. Barkov, J.-M. Barnola, I. Basile, M. Bender, J. Chappellaz, M. Davis, G. Delayque, M. Delmotte, V.M. Kotlyakov, M. Legrand, V.Y. Lipenkov, C. Lorius, L. Pepin, C. Ritz, E. Saltzman, and M. Stievenard. 1999.

Nature 399: 429-436.