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In this video I will explain how the lower atmosphere heated by our Sun. It turn out much of the visible light and the radiation that comes from the Sun makes it to the troposphere including UV-A. However much of the radiation is absorbed the upper troposphere. Some is absorbed by the cloud tops, most is absorbed by water vapor, and CO2 absorbs the rest. (Part 1)

Next video in this series can be seen at:
https://youtu.be/24uo6Dv5-NM