“Climate models,” according to Daniel Baer and Noah Gordon, in the Washington Post, here, “are complicated things. They must consider a staggering number of mathematical and physical variables to predict, for instance, how emitting a given amount of carbon dioxide will change the flows of air, water and heat between the atmosphere and the oceans. More sophisticated projections go further, showing how temperature changes will affect rainfall in a certain region, which in turn will affect crop yields and, as a result, the carbon cycle.”

However, as illustrated above, from “Climate.gov,” here, atmospheric Carbon Dioxide concentrations have increased close to 50% since 1750, when they were under 280 ppm, to around 420 ppm today.

Continue reading →