Quote:
Originally Posted by redpoint5
We're below 2 ppm methane. One source I read said it accounts for about 15% of warming due to greenhouse gases.
It's not nothing, but doesn't seem to be anywhere near the change we're seeing with CO2.
I've always wondered what the biologic impact of increasing CO2 concentrations would be. Our breathing reflex is triggered not by lack of oxygen, but from buildup of CO2 concentrations. Doubling that concentration must have some effect, even if small.
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I suspect that the US Navy and NASA would have specific data on it.The Apollo-13 astronauts were nearly killed by it when the Lithium-hydroxide scrubbers failed,and submariners must be vigilant in monitoring a buildup when submerged.
Earth's atmospheric Oxygen content has been falling by 2ppmv /year as of 2015.CO2 will double before too long.Methane has more than doubled.