Hydrogen is actually an indirect GHG gas. It binds to hydroxyl radicals, which would normally act to breakdown other greenhouse gases (methane + OH -> methanol or CO2 and water). Ironically, this action results in water vapor. Water vapor is direct GHG, and a powerful one at that, accounting for about 95% of the GHG effect. But that's one of the little known secrets of the global warming debate. After all, outlawing evaporation from the oceans is going to be an uphill battle.
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Last edited by chuckm; 08-09-2009 at 07:35 PM..
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