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Reader Opinion: Climate change

Author of the Jan.6 "Climate change is here" please take note: there is not a complete consensus among scientists as to whether global warming is even man-made (i.e., caused by fossil fuel carbon dioxide emissions).

Author of the Jan.6 "Climate change is here" please take note: there is not a complete consensus among scientists as to whether global warming is even man-made (i.e., caused by fossil fuel carbon dioxide emissions).

Consider that CO2 is a trace gas (only 0.04 percent of the atmosphere is CO2). Consider that the heat capacity of CO2 near the earth surface is about 23 times less than sun's, approximately 150w/m2 heat energy at that point. Now consider that about 97 percent of all CO2 in the atmosphere is made by nature, and 3 percent is man-made. That leaves man with a puny 0.195 watts/m2 of input to heat us up for "Thermaggedon." Consider that Ma Nature's CO2 reservoirs located in the oceans and land areas can hold about 70-80 times more CO2 than what is in the atmosphere. Which is about 2,400 times as much as man's puny atmospheric CO2 contribution. These reservoirs are in a constant state of flux, they absorb or emit CO2, depending on cloud cover, ocean currents, etc. So it would seem reasonable that one little burp from her massive CO2 reservoir, and/or any variation in solar energy via sun-spot activity, cloud variables, volcanoes, etc, will probably push man's puny 3 percent atmospheric CO2 contribution into the realm of insignificance in regard to any effect on global temperatures.

Clouds are big factor and climatologists are not sure how much sunlight is reflected to cool the earth, or how much heat is trapped and re-radiated onto the earth. (Scientific American, Dec. 2014). So if we don't even know what effect clouds are inducing, we certainly cannot say man's tiny 3 percent share of the total atmospheric CO2 is responsible for cooking us.

Phil Drietz

Delhi

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