Posted by: metalax
« on: March 25, 2013, 02:12:12 PM »Albedo does increase if you are terraforming a planet which has ice deposits when they melt, though Mars only increases from 1 to 1.015(Actually this could be from 1.01 to 1.02, the terraforming screen lists it as 1.01, the event log when the ice melts lists it as 1.015 and the system information screen lists it as 1.02).
For levels of CO2, 7% is hitting the rapidly lethal range, 4% can safely be breathed for a week with no ill effects, 3% for over a month and 2% pretty much indefinitely(figures are from the wikipedia article but they match what I recall from when I looked this up a few years back). Some people however are more sensitive and start suffering ill effects at 1%. Also note that the tolerable quantity doesn't increase if you increase the total atmospheric pressure, the tolerable partial pressures remain the same.
The games doesn't treat water as a greenhouse gas. The only gasses that are treated as greenhouse gasses, i.e. provide greenhouse pressure, that do not also render the atmosphere unbreathable are CO2 and safe greenhouse gas.
In order to get an earth like atmosphere on Mars I typically use
0.2 Oxygen
0.633 Nitrogen
0.01 Argon
0.02 Carbon Dioxide
0.137 Safe Greenhouse gas
This gives a surface temperature of 14.07 degrees.
Your calc may be off due to the displayed values for albedo and greenhouse factor being rounded while the actual temperature is calculated using the correct values.
edit: and you edited while I was posting
For levels of CO2, 7% is hitting the rapidly lethal range, 4% can safely be breathed for a week with no ill effects, 3% for over a month and 2% pretty much indefinitely(figures are from the wikipedia article but they match what I recall from when I looked this up a few years back). Some people however are more sensitive and start suffering ill effects at 1%. Also note that the tolerable quantity doesn't increase if you increase the total atmospheric pressure, the tolerable partial pressures remain the same.
The games doesn't treat water as a greenhouse gas. The only gasses that are treated as greenhouse gasses, i.e. provide greenhouse pressure, that do not also render the atmosphere unbreathable are CO2 and safe greenhouse gas.
In order to get an earth like atmosphere on Mars I typically use
0.2 Oxygen
0.633 Nitrogen
0.01 Argon
0.02 Carbon Dioxide
0.137 Safe Greenhouse gas
This gives a surface temperature of 14.07 degrees.
Your calc may be off due to the displayed values for albedo and greenhouse factor being rounded while the actual temperature is calculated using the correct values.
edit: and you edited while I was posting