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Environmental Effects of Increased Atmospheric Carbon Dioxide

Petition Project – January 1998

This article is states that the effects of CO2 on the climate are negligible if they exist at all. It contends that CO2 levels are definitely increasing but that their effect does not compare to other factors including random climate variation and the influence of the sun.

This petition project was created so that scientists could express their concern regarding the conclusions of the Kyoto agreements. It was supposedly “signed” by 17,000 scientists that questioned the conclusion of the politicians and scientists that gathered at Kyoto.

World leaders gathered in Kyoto, Japan, in December 1997 to consider a world treaty restricting emissions of ”greenhouse gases,” chiefly carbon dioxide (CO2), that are thought to cause ”global warming” severe increases in Earth’s atmospheric and surface temperatures, with disastrous environmental consequences. Predictions of global warming are based on computer climate modeling, a branch of science still in its infancy. The empirical evidence actual measurements of Earth’s temperature shows no man-made warming trend. Indeed, over the past two decades, when CO2 levels have been at their highest, global average temperatures have actually cooled slightly.

Atmospheric concentrations of CO2 are reported to have varied widely over geological time, with peaks, according to some estimates, some 20-fold higher than at present and lows at approximately 18th-Century levels

The current increase in carbon dioxide follows a 300-year warming trend: Surface and atmospheric temperatures have been recovering from an unusually cold period known as the Little Ice Age. The observed increases are of a magnitude that can, for example, be explained by oceans giving off gases naturally as temperatures rise. Indeed, recent carbon dioxide rises have shown a tendency to follow rather than lead global temperature increases

In effect, an experiment has been performed on the Earth during the past half-century an experiment that includes all of the complex factors and feedback effects that determine the Earth’s temperature and climate. Since 1940, atmospheric GHGs have risen substantially. Yet atmospheric temperatures have not risen. In fact, during the 19 years with the highest atmospheric levels of CO2 and other GHGs, temperatures have fallen.

The global warming hypothesis is not based upon the radiative properties of the GHGs themselves. It is based entirely upon a small initial increase in temperature caused by GHGs and a large theoretical amplification of that temperature change. Any comparable temperature increase from another cause would produce the same outcome from the calculations.

At present, science does not have comprehensive quantitative knowledge about the Earth’s atmosphere. Very few of the relevant parameters are known with enough rigor to permit reliable theoretical calculations. Each hypothesis must be judged by empirical results. The global warming hypothesis has been thoroughly evaluated. It does not agree with the data and is, therefore, not validated.

There are no experimental data to support the hypothesis that increases in carbon dioxide and other greenhouse gases are causing or can be expected to cause catastrophic changes in global temperatures or weather. To the contrary, during the 20 years with the highest carbon dioxide levels, atmospheric temperatures have decreased.

We also need not worry about environmental calamities, even if the current long-term natural warming trend continues. The Earth has been much warmer during the past 3,000 years without catastrophic effects. Warmer weather extends growing seasons and generally improves the habitability of colder regions. ”Global warming,” an invalidated hypothesis, provides no reason to limit human production of CO2, CH4, N2O, HFCs, PFCs, and SF6 as has been proposed

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2 Responses to “Environmental Effects of Increased Atmospheric Carbon Dioxide”

  1. Please tell me the source of this info: “Indeed, recent carbon dioxide rises have shown a tendency to follow rather than lead global temperature increases”.

  2. Glenn –

    The lag is fairly well documented. As far back as almost 2 decades ago Lorius and Hansen predicted this and multiple studies have shown that there is a several century lag in the relationship between the historical increase in temperature and the lag following of carbon dioxide levels.

    There are many papers that cover this. Check out Caillon and others “Timing of Atmospheric CO2 and Antarctic Temperature Changes Across Termination” at http://icebubbles.ucsd.edu/Publications/CaillonTermIII.pdf