Posted by david melville on July 30, 2009, 11:54 am
86.136.207.X
Irrespective of the thermodynamic inconsistencies in the “greenhouse gas” carbon dioxide theory there are possibly some quite simple explanations for the historic variability of carbon dioxide levels in the atmosphere and global temperature.
(1) Global cooling depresses sea surface temperature allowing greater dissolution and storage of carbon dioxide in oceans
(2) Cooling depresses the normal biological degradation of organic matter into its major constituent , carbon dioxide ( admittedly biosynthesis is likewise reduced)
(3) Increased ice cover increases the effects of 2 above.
Despite much searching I cannot find the answer to the next questions – how much co2 is locked into ice that has originally fallen as snow? Do snowflakes have co2 incorporated into them at formation or are they pure water?
12 inches of snow are equivalent to one inch of water , thus, at fall, approximately 11 inches worth of atmosphere is incorporated in the snow , how much is lost as it packs down under further snowfall? Even if only a 10th of this trapped air is retained then the expansion of the global ice sheet would lock up considerable quantities of co2 reducing the atmospheric concentration. The reverse happens as the ice sheet melts and retreats.
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