Thursday, March 16, 2017
On global warming and greenhouse gases

I did not ask, in my letter published March 2, “...how Earth could cool during an ice age in the absence of human influence,” contrary to a letter you published March 9. Indeed, the words “ice age” were nowhere in my letter. The remainder of the response seems to largely support my view that it is a variation of solar insolation, explainable by astronomy, that is primarily to blame for short-term changes in Earth’s surface temperatures and not “greenhouse gases” and that small changes in the amounts of such gases can not result in a run-away warming.

I have no quarrel with the contention that some carbon dioxide is exchanged between our atmosphere and water bodies or that the term “greenhouse gas” may have originated innocently so the responded is largely arguing with himself on those points.

Ross Wilkinson