Three Ways Global Warming Affects Weather When there has been a big storm it is often reported that it was partly due to global warming. Not everyone understands or believes it. I will explain the steps in the process, working from things we already know, so that everyone can be sure it is true. Everyone can see that cloudy nights are seasonably warm and clear nights are colder. This is because heat, as infrared light, scatters off of cloud droplets, and some of it goes back to earth. Molecules of carbon dioxide and other greenhouse gases also send heat back, but in a different way. They absorb the infrared light, and then radiate it back in random directions. Some goes back to warm the earth and the lower atmosphere. Since some of the heat is being sent back down, less goes to the upper atmosphere, so it becomes cooler. This twin effect of greenhouse gases, warming lower atmosphere and cooling upper atmosphere, is the key to understanding...
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