Impact of Cfc

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CFC Destruction of Ozone - Major Cause of Recent Global Warming!   Robert A. Ashworth
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[pic]
The animation illustrates how one chlorine atom in the stratosphere  can destroy up to 100,000 ozone molecules.  Graphic credit goes to University of Alaska

 

Abstract

There has been a lot of discussion about global warming. Some say anthropogenic carbon dioxide (CO2) emissions caused the earth to warm. Others say there is no abnormality at all, that it is just natural warming. As you will see from the data presented and analyzed, a greater than normal warming did occur in recent times but no measurements confirm an increase in CO2, whether anthropogenic or natural, had any effect on global temperatures. There is however, strong evidence that anthropogenic emissions of chlorofluorocarbons (CFCs) were the major cause of the recent abnormal warming.   CFCs have created both unnatural atmospheric cooling and warming based on these facts:     • CFCs have destroyed ozone in the lower stratosphere/upper troposphere causing these zones in the atmosphere to cool 1.37 oC from 1966 to 1998. This time span was selected to eliminate the effect of the natural solar irradiance (cooling-warming) cycle effect on the earth's temperature.   • The loss of ozone allowed more UV light to pass through the stratosphere at a sufficient rate to warm the lower troposphere plus 8-3/4" of the earth by 0.48 oC (1966 to 1998).   • Mass and energy balances show that the energy that was absorbed in the lower stratosphere /upper troposphere hit the lower troposphere/earth at a sustainable level of 1.69 x 1018 Btu more in 1998 than it did in 1966.   • Greater ozone depletion in the Polar Regions has caused these areas to warm some two and one-half (2 �) times that of the average earth temperature (1.2 oC vs. 0.48 oC). This has caused permafrost to melt, which is releasing copious quantities of methane, estimated at 100 times that of manmade CO2 release, to the atmosphere. Methane in the atmosphere slowly converts to CO2 and water vapor and its release has contributed to higher CO2 concentrations in the atmosphere.   • There is a temperature anomaly in Antarctica. The Signey Island landmass further north, warmed like the rest of the Polar Regions; but south at Vostok, there has been a cooling effect. Although the cooling at Vostok needs to be analyzed in more detail, because of the large ozone hole there, black body radiation from Vostok (some 11,400 feet above sea level) to outer space is most likely the cause. Especially, since this phenomenon occurred over the same period that stratospheric ozone destruction took place.

Greenhouse Gases

 
Many scientists do not agree with the CO2 global warming models developed by the Intergovernmental Panel on Climate Change (IPCC). For instance, T.M.L. Wigley 1, a senior scientist at the U.S. National Center for Atmospheric Research, calculated the "saved" warming that would accrue if every nation met its Kyoto Protocol obligations (U.S. reduction of 43%). By 2050, the earth�s temperature would reduce by 0.07 oC - a change so small it could not be reliably measured. In contrast to Wigley's projections, the IPCC has developed models 2 that predict the average surface temperature of the earth relative to 1980-1990, will increase by 2 to 11.5�F (1.1 to 6.4�C) by the end of the 21st century due to increased CO2 concentrations in the atmosphere. They project temperature change as functions of growth rates in atmospheric carbon dioxide. Those projections are shown in Figure 1. [pic]

Figure 1. IPCC projections of global warming.
 
What is so disturbing is that measured temperature points added to the IPCC graph do not show the temperature has increased. Further, temperatures for over 1200 years (see Figure 2) show absolutely no correlation with CO2 concentration in the atmosphere. Note that the 210 to 312 ppmv scale is in larger increments than...
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