6 votes

Let's have a planetary greenhouse effect only in winter?

the civilization is near future SF, imagine a few hundred years ... No magic You can't There are no even remotely possible ways to control the content of the atmosphere at different locations ...
  • 1,248
4 votes

How to calculate the greenhouse effect?

Not a simple calculation. If you want to get serious, try the book "Principles of Planetary Climate" by Raymond Pierrehumbert: https://www.cambridge.org/core/books/principles-of-planetary-...
  • 20.3k
4 votes

Keeping the global average temperature at current levels if the Earth moves away from the Sun. What is the limit?

Plants require some amount of light. They don't need current level, but below 25% of current level they will start to decrease production. So x2 distance is the limit for agriculture as usual. 100 ppm ...
3 votes

How to calculate the greenhouse effect?

A previous answer said "not simple." Yes, very seriously not simple. Here are just a few considerations. Clouds are a huge effect. And, quite disconcertingly, they can be positive or ...
  • 9,571
3 votes
Accepted

How to calculate greenhouse effect for planet as well as for the atmosphere?

The accepted answer you linked to doesn't quite tell you what you need to know... it just shows you how to work out the temperature of the atmosphere (given some simplifying assumptions), given the ...
2 votes

Let's have a planetary greenhouse effect only in winter?

giant space sun-shade have a giant parasol hanging above earth. Make it able to maneuver and/or to tune its optical absorbance. I leave the details up to you. It could be a giant disk moving around to ...
1 vote

Let's have a planetary greenhouse effect only in winter?

Okay, this is not a near-future idea, its a wacky, far-future, experimental technology idea, but hear me out. A network of strategically placed, carefully outfitted space elevators. A space elevator ...
  • 1,406
1 vote
Accepted

How would I calculate the greenhouse effect based on atmospheric composition?

I've found a way to calculate a surface temperature, but it relies on a constant, $\epsilon$, that doesn't appear to have an easy way to generate it. The function is: $$ \frac{S(1-A)}{4} = \sigma \...
  • 101

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