Aurora 4x
New Players => The Academy => Topic started by: Shadow on March 22, 2011, 06:09:32 PM
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Is there a limit to how much I can cool down a planet through anti-greenhouse gas beyond my species' maximum atmospheric pressure tolerance? That's 4 atm, in the case of humans. I know there's a maximum greenhouse factor that prevents me from heating up planets past a certain point (Titan, argh), but I don't know if there's a similar anti-GH measure.
Also, how can I calculate if I'll be able to bring the temperature level down enough with 3.9 (maximum minus minimum oxygen pressure) atm of anti-greenhouse gas, at most?
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Is there a limit to how much I can cool down a planet through anti-greenhouse gas beyond my species' maximum atmospheric pressure tolerance? That's 4 atm, in the case of humans. I know there's a maximum greenhouse factor that prevents me from heating up planets past a certain point (Titan, argh), but I don't know if there's a similar anti-GH measure.
No, there's no limit, so you can actually push the temperature of a planet past absolute zero if you put enough in the atmosphere. Just tested with Mercury.
Also, how can I calculate if I'll be able to bring the temperature level down enough with 3.9 (maximum minus minimum oxygen pressure) atm of anti-greenhouse gas, at most?
No idea, but don't worry, 1Atm of Anti-GH gas easily offset 1Atm of Nitrogen on Mercury, so unless you have an extremely hot planet, you'll always get into the negatives within your limit.
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Ah, shouldn't be a problem then.
The planet in question is extra-solar, has negligible atmosphere (trace type) and a surface temperature of 203.94 degrees Celsius. Greenhouse factor is 1, and planetary albedo is 0.88.
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As a matter of interest what do people go for as their preferred green house and anti green house gases?
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For greenhouse, I tend to go for carbon dioxide. For anti-greenhouse, I believe there's no safe choice but the generic anti-greenhouse gas.
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Green house gases -- Safe Greenhouse Gas(prefered for terraforming), Carbon Dioxide, Nitrogen Dioxide, Sulphur Dioxide
Anti-Greenhouse Gases -- Anti-Greenhouse Gases
Both Nitrogen Dioxide and Sulphur Dioxide are listed as danger level 2 on the Gases table.
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So the generic safe greenhouse gas is more effective than carbon dioxide? :-X
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So the generic safe greenhouse gas is more effective than carbon dioxide? :-X
Nope. Just tested: Both have the same effect.
Personally, I prefer carbon dioxide because it's more natural and isn't vague like "Safe greenhouse gases".
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Personally, I prefer carbon dioxide because it's more natural and isn't vague like "Safe greenhouse gases".
While I agree with that, it's actually not safe (http://en.wikipedia.org/wiki/Carbon_dioxide_poisoning) at terraforming concentrations (not in the game though.)
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While I agree with that, it's actually not safe (http://en.wikipedia.org/wiki/Carbon_dioxide_poisoning) at terraforming concentrations (not in the game though.)
Ah bah humbug. Flushed skin, full pulse, tachypnea, dyspnoea, extrasystoles, muscle twitches, hand flaps, reduced neural activity, raised blood pressure, disorientation, panic, hyperventilation, convulsions, unconsciousness, and death aren't so bad. The colonists can take it. I'm -100% certain of that.
:P
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Ah bah humbug. Flushed skin, full pulse, tachypnea, dyspnoea, extrasystoles, muscle twitches, hand flaps, reduced neural activity, raised blood pressure, disorientation, panic, hyperventilation, convulsions, unconsciousness, and death aren't so bad. The colonists can take it. I'm -100% certain of that.
:P
I think I've experienced all of the above at some point. Perhaps i should open a window more often. :o
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Nope. Just tested: Both have the same effect.
Personally, I prefer carbon dioxide because it's more natural and isn't vague like "Safe greenhouse gases".
Without knowing the calculations that Steve is using I would not make that assumption.
Based on the table entries they are not the same though. CO2 has a weight of 44 and boiling point of 195 while SGG has a weight of 40 and a boiling point of 100. Clearly not the same.
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Without knowing the calculations that Steve is using I would not make that assumption.
Based on the table entries they are not the same though. CO2 has a weight of 44 and boiling point of 195 while SGG has a weight of 40 and a boiling point of 100. Clearly not the same.
But they have the same effect, no? Then in gameplay terms they are the same. Atmospheric pressure factor, Greenhouse factor, etc are 100% the same. No difference whatsoever as far as I can tell. Try it yourself, no difference. Carbon Dioxide has the same effect gameplay wise as Safe Greenhouse Gases.
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I think I've experienced all of the above at some point. Perhaps i should open a window more often. :o
Including death? ::)
Yes, Mars is now ideal for human habitation... with a 50% carbon dioxide atmosphere.
I will justify "abstract greenhouse gas" by pretending they are some sort of flourinated hydrocarbon, or a compound similar to CFCs which are potent greenhouse gasses.
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Including death? ::)
I was wondering if anyone would notice. Interestingly enough no i've not experienced death like symtoms presently. But from what i hear it'll happen eventually. :'(
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But they have the same effect, no? Then in gameplay terms they are the same. Atmospheric pressure factor, Greenhouse factor, etc are 100% the same. No difference whatsoever as far as I can tell. Try it yourself, no difference. Carbon Dioxide has the same effect gameplay wise as Safe Greenhouse Gases.
Actually no they don't. I can't find the topic where Steve talks about the calculations he's using, but the gas boiling point is a factor in the albedo calculations which in turn is a factor in calculating temperature. CO2 has a higher impact on albedo than SGG. From the stand point of only the atmospheric pressure impact on temperature you are correct. CO2 and SGG are the only non-toxic greenhouse gasses, greenhouse gasses have temp pressure modifier of 10X.
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Its in the Wiki. If the Temperature is below the Boiling Point of a gas it does not affect the Greenhousefactor.
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Its in the Wiki. If the Temperature is below the Boiling Point of a gas it does not affect the Greenhousefactor.
Really? Because I just put .1 Atms of Carbon Dioxide on Pluto and I got 1.11 GH factor despite it being 40K degrees and it increased the temperature to 44.4K degrees. Same with SGG.
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Err thats because your Athmospheric preasure has increased. And i think i misworded my previous post it could have been GHP instead of GHF.
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Err thats because your Athmospheric preasure has increased.
Not really. The atmospheric pressure only added .01 GH factor. The greenhouse gas added the .1. Thus the 1.11 GH Factor.
And i think i misworded my previous post it could have been GHP instead of GHF.
Doesn't matter. GHP increased by .1 anyway.
As far as I can tell, adding .1 ATMs Carbon Dioxide or SGG had the same effect on Pluto as on Mercury. 1.11 GH Factor, 0.1 GHP, an increase in ground temperature of 11%.
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Its in the Wiki. If the Temperature is below the Boiling Point of a gas it does not affect the Greenhousefactor.
What wiki? Not AuroraWiki (http://aurorawiki.pentarch.org/index.php?title=Main_Page), a search for "boiling" found nothing.
If that were true Titan would have the same surface and base temperatures, as it should.