It's worth checking what people have already calculated, e.g. the wiki article on the topic [0]. There's large amounts of CO2 ice on Mars which could be "evapor

It's worth checking what people have already calculated, e.g. the wiki article on the topic [0]. There's large amounts of CO2 ice on Mars which could be "evaporated" to create a strong greenhouse effect. Someone thought of orbital space mirrors as an elegant method to do this -- to heat the polar ice caps and sublimate enough to create a runaway greenhouse. Fluorocarbons would take about 10^8 tons, so that might be vaguely plausible. [0] https://en.wikipedia.org/wiki/Terraforming_of_Mars https://en.wikipedia.org/wiki/Terraforming_of_Mars