InkL0sed wrote:I don't think a tidally-locked Earth sounds like a good plan in any case.
Maybe, but I like the whole "everlasting sunset" thing. Although I could probably have that in the polar regions of a rotating planet with a non tilted axis so lets try that first.
I think the observed surface temperatures on the (very slowly rotating) moon make a good estimate of what surface temperatures on a tidally-locked earth would look like. Quote Wikipedia:
"During the lunar day, the surface temperature averages 107°C, and during the lunar night, it averages -153°C"
So even a strong greenhouse effect probably couldn't bring the temperature into the melting-rock-range before the temperature starts to stabilize due to increased weathering.