The earth's atmosphere has actually cooled by 0.13° Celsius since 1979 according to highly accurate satellite-based atmospheric temperature measurements. By contrast, computer climate models predicted that the globe should have warmed by an easily detectable 0.4° C over the last fifteen years.
The scientific evidence argues against the existence of a greenhouse crisis, against the notion that realistic policies could achieve any meaningful climatic impact, and against the claim that we must act now if we are to reduce the greenhouse threat.
Current computer climate models are incapable of coupling the oceans and atmosphere; misrepresent the role of sea ice, snow caps, localized storms, and biological systems; and fail to account accurately for the effects of clouds.
Temperature records reveal that predictive models are off by a factor of two when applied retroactively in projecting the change in global temperature for this century.
The amount of warming from 1881 to 1993 is 0.54° C. Nearly 70 percent of the warming of the entire time period — 0.37° C —occurred in the first half of the record — before the period of the greatest build-up of greenhouse gases.
Accuracy in land-based measurements of global temperatures is frustrated by the dearth of stations, frequent station relocations, and changes in how ocean-going ships make measurements.
Although all of the greenhouse computer models predict that the greatest warming will occur in the Arctic region of the Northern Hemisphere, temperature records indicate that the Arctic has actually cooled by 0.88° C over the past fifty years.
Corrective environmental policies would have a minuscule impact on the climate. According to its own projections, the Intergovernmental Panel on Climate Change's own plan would spare the earth only a few hundredths of a degree of warming by middle of the next century.
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