A Very Deep Valley: How Weird a Climate Can I Get?
- Thread starter WayneLigon
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Turjan
Explorer
Thanks for that link. That looks pretty interestingtarchon said:
. I didn't know about this Nile bed detail.The Grand Canyon is also a good example. I remember one of the last times I was there that it was pretty cold at the rim, and we were wearing jackets against the nasty weather, whereas at the bottom they had 110 F.
tarchon
First Post
I hiked it in early spring - went from camping in 3 inches of snow on the south rim to shorts and t-shirt weather on the floor. The north rim is even cooler.Turjan said:Thanks for that link. That looks pretty interesting
The Grand Canyon is also a good example. I remember one of the last times I was there that it was pretty cold at the rim, and we were wearing jackets against the nasty weather, whereas at the bottom they had 110 F.
Nyeshet
First Post
I can see hot (due to the +45F increase in heat), but dry depends on where it occurs. There are some notable sinkholes and canyons in the tropics that tend to be rather damp and steamy / foggy rather than dry. In regions where rain is common (the tropic: rain forest, and the sub-arctic: boreal taiga) it will be wet. In drier regions (~20-25 and around the poles) it will be bone dry. In most other regions it will vary with the seasons.tarchon said:
As for the oxygen, I think the percentage (of total air volume) is more important than the increased air pressure. If the percentage is not much higher, if it is just more of the same, then why would the air be any more flamable?
Turjan
Explorer
That's because partial pressures matter in chemistry, like tarchon said. Example: You suffocate on top of very high mountains, because the partial pressure of oxygen is too low, although the percentage is exactly the same as at sea level. Just extrapolate this to high partial pressures, and you see what tarchon talks about.Nyeshet said:
glass said:
The atmosphere is made up of multiple gasses, mostly Nitrogen, with a good bit of molecular Oxygen, and a smattering of Argon, and other gasses. Each of these compresses differently, under enough pressure. Nitrogen compresses much more than Oxygen, for example. At high altitudes, you breathe the same percentahes of each, but the Oxygen is basically too "spread out", so you don't get enough Oxygen in each breath of air. Hence, as previously pointed out, you suffocate (actually, I think there's technically another word for it, but I forget)...
At low altitudes, the Oxygen, which can't compress together like the Nitrogen can, is too "close together", and when you breathe, you get too much. Depending upon depth, you could suffer the effects of Oxygen "Narcosis", which makesya kinda silly (and not thinking clearly). Since there seems to be too much Oxygen in the air, things would also be set alight too easily, and you might even "burn up your lungs" by breathing normally, since they're getting too much Oxygen with each breath. You could probably breathe less (once/minute, or whatever), and prevent this from happening.
"Partial Pressure of Oxygen" is important because of the differences of compressability of the different atmospheric gasses. Oxygen is the only one we care about, as it is the only one that you NEED to breathe!
Zander
Explorer
I wouldn't impose a penalty or adjustment period due to atmospheric conditions, e.g. increased pressure, on races from the underdark such as drow and svirfneblin. I probably wouldn't penalise mountain dwarves with a tradition of deep mining either.
On the other hand, races from high altitudes such as avariels would get hit harder than baseline races, i.e. humans, half-orcs.
On the other hand, races from high altitudes such as avariels would get hit harder than baseline races, i.e. humans, half-orcs.
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