Reply to "So much for man-made global warming"

StankyPost Master

If one examines proxies for solar radiance (Mankind has not been able to measure directly the amount of sunlight the earth receives until recent times.), one can see that probably the primary reason for the warming temperatures is the sun.

First of all, there is sunspot activity:

http://www.aip.org/history/climate/xsolar.htm.

Then there are radioactive isotopes that are produce in the upper atmosphere like Carbon-14:

http://en.wikipedia.org/wiki/F..._activity_labels.svg

That said, perhaps mankind has been effecting the climate at the fringes. CO2 might be a greenhouse gas, but so is water vapor which has a stronger effect. We might be worrying about the wrong component coming out of our exhaust pipes and all those dams and irrigation projects in deserts might be of more concern.

7/25/132:08 PM

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