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Redsheep

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  1. Yes, thank you. The picture is complicated here by the planet not being earthlike; since the terrain is broken up into modest-sized blocks, really enormous weather patterns can't form. I imagine this would also mean greater extremes in local climate, since you can't have moderating effects like the Gulf Stream on the same scale. So the northernmost basin is much cooler than it would be on Earth at equivalent latitude, etc.
  2. Thank you very much! It sounds like this is at least plausible enough that any readers with a meteorology background won't roll their eyes with disgust and throw the book across the room. Would you expect anything in particular to happen when the circuit is completed--when the warm air streaming north at high altitude sinks back down? Would the meeting of hot and cold make it rainy at the top end as well?
  3. . . . I take it there are too many unknowns to even guess? I understand that meteorology depends on a billion different factors, changing one slightly can produce drastically different results, and I've changed dozens with this scenario. That would be good news for me too, as a science-fiction author with only a broad general knowledge of science. I love "plausible deniability." But is that the case?
  4. So, I'm a science-fiction writer, and I've got a weird one here: suppose you've got a planet that's mostly barren, with viable atmosphere, etc. conditions confined to a series of extremely deep rifts and depressions. Within those depressions, basically normal earthlike conditions prevail, so 21% oxygen, abundant water. They're up to sixteen kilometers deep, and outside of them the atmosphere as I conceive of it is quite rarified (i.e. top of Everest conditions). Of course, I am not a meteorologist, which is why I'm here, so possibly my picture there is implausible. For full disclosure, in case it matters, the planet is half earth mass, 80% earth gravity. The contiguous region of rifts and basins I am concerned with makes up ten percent of its surface, but spread out over most of a hemisphere (picture a gigantic spiderweb). This is awkward without a map, but basically the "spiderweb" is divided in half, north to south, and those halves connected by a three thousand kilometer rift (closer to 2200 north-to-south, since the rift winds a lot). At either end of the rift stand two large basins; the southern one is roughly the size of Peru, with many connections to other basins, while the northern is more Iran-sized. The southern basin straddles the planet's equator and has a large sea in it. The northern also has a significant sea, but is naturally much cooler. An artificial canal runs through the connecting rift for trade purposes. Now, by my primitive understanding of climate science, the southern basin should have much lower air density than the northern due to its receiving far more solar radiation. The differential will cause the basin to suck cold air through the connecting rift like a straw, generating a constant cool wind. Once that wind hits the warmer air in the south, it will precipitate moisture in the air, making the spot where the rift meets the southern basin extremely rainy. I'm guessing, based on vague intuition alone, that the overall balance of air in the system will then be maintained by the warmed air returning along the rift it came from, but at a significantly higher elevation. Is any part of this plausible? Sorry for making it so complicated. This isn't the sort of thing I can just consult library books about, obviously. Thanks for reading!
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