Weather

What is the greenhouse effect and how does it affect temperatures?

The greenhouse effect is a process in which sunlight is trapped by gases in the atmosphere, most notably carbon dioxide.

Those gases in turn re-radiate that heat back through the Earth's atmosphere.

The reason it's called the greenhouse effect is because this process is exactly what happens in a greenhouse.

If you've ever been in a greenhouse you know how warm it can get.



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Record 71°F February 15, 1949 -5°F February 15, 1943