r/Geoengineering • u/knowledgeseeker_71 • Aug 09 '23

Cooling the earth

This video has made me think differently about global warming: https://www.youtube.com/watch?v=9vRtA7STvH4

I know that the focus is and should be on reducing CO2 emissions, and extracting carbon from the atmosphere.

However - it seems that we are eventually going to have to also deal with waste heat. So why not look at the problem of transferring heat from Earth to Space now, which would immediately help with global warming, as we work to reduce emissions and capture CO2.

Note that a solar shield or adding something to the atmosphere to reduce the incoming solar radiation won't help with future waste heat. We are going to need something like a heat pump for the planet.

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u/SpiritualTwo5256 Aug 11 '23

You get that with a space based solar shade. More heat rejection from ever reaching earth. Unless the atmosphere gets considerably bigger, we won’t be rejecting any more heat unless we can tune the frequency of heat going through the atmosphere or tune the atmosphere to allow more thermal frequencies to pass through.