Posted by: Noriad
« on: May 10, 2020, 01:29:15 PM »You need at least 0.1 atm oxygen, which is at most 30% of atmosphere.
So at minimum you need 0.1 atm oxygen plus 0.24 atm (or more) other gas. If the temperature is about right, use nitrogen, if too cold use Aestusium (greenhouse), if too warm use Frigusium (anti-greenhouse).
Greenhouse factor = 1 + (greenhouse gas pressure) - (anti-greenhouse gas pressure) + (0.1 * (regular gas pressure))
Surface temperature = Base temperature(Kelvin) * Greenhouse factor * albedo factor
(with these formulas you can calculate how much greenhouse/antigreenhouse gas you need to get the desired temperature)
Note that in Aurora 4x, water vapor is a "regular" gas, unlike real life, where water vapor is a greenhouse gas.
Note that albedo factor (sunlight absorption/reflection factor) is affected by frozen water. If surface water is frozen it lowers the temperature a bit, and consequently, if it melts, temperature will rise a bit. On Mars, you get a few degrees rise once you melt its 10% ice cap.
To get enough water, you need at least 20% surface coverage. For this you need to add 0.5 bar water vapor which will rain down at a rate of 0.1 bar/year, which means 5 years. Note that it starts raining down immediately, so if you set it to 0.5 bar you will add too much, the amount depends on how much rains down before you reach 0.5. But some water vapor will stay in the atmosphere so you do need a bit more anyway.
So at minimum you need 0.1 atm oxygen plus 0.24 atm (or more) other gas. If the temperature is about right, use nitrogen, if too cold use Aestusium (greenhouse), if too warm use Frigusium (anti-greenhouse).
Greenhouse factor = 1 + (greenhouse gas pressure) - (anti-greenhouse gas pressure) + (0.1 * (regular gas pressure))
Surface temperature = Base temperature(Kelvin) * Greenhouse factor * albedo factor
(with these formulas you can calculate how much greenhouse/antigreenhouse gas you need to get the desired temperature)
Note that in Aurora 4x, water vapor is a "regular" gas, unlike real life, where water vapor is a greenhouse gas.
Note that albedo factor (sunlight absorption/reflection factor) is affected by frozen water. If surface water is frozen it lowers the temperature a bit, and consequently, if it melts, temperature will rise a bit. On Mars, you get a few degrees rise once you melt its 10% ice cap.
To get enough water, you need at least 20% surface coverage. For this you need to add 0.5 bar water vapor which will rain down at a rate of 0.1 bar/year, which means 5 years. Note that it starts raining down immediately, so if you set it to 0.5 bar you will add too much, the amount depends on how much rains down before you reach 0.5. But some water vapor will stay in the atmosphere so you do need a bit more anyway.
