Earth with 3-hour days (properly this time)
Added 2023-03-21 11:44:02 +0000 UTCFinally got this to balance at the right temperature; didn't take much more CO2 (6400 ppm), just tweaking the initial conditions to warm up faster before the big glaciers can set in. Exoplasim does not like rotation this fast, most of the run crawled along at 10-minute timesteps, but we got there in the end.
I'll be moving on to longer days now; current plan is 2x, 4x, 10x, 30x, and 360x day length (exoplasim doesn't distinguish sidereal and synodic days btw, it treats them as being equivalent unless you use the tidal-locking parameters).
Comments
It's a definite issue and one I'll have to note in the final writeup, and I don't really know how much of a difference it makes. At some point in the future I'll look at varying planet size and gravity, but variable surface gravity across the surface is something exoplasim is just not equipped to model.
Nikolai Lofving Hersfeldt
2023-05-01 15:00:36 +0000 UTCHow much "with a grain of salt" should we take this ultra-fast rotation model you think? I presume ExoPlaSim doesn't account for rotational flattening of planets, which would be extremely significant at this speed. I think I recall seeing calculations that at 3-4 hour rotation a terrestrial planet becomes so ellipsoid that the "effective" gravitational difference between pole and equator is ~2-3 fold. I honestly have no idea how this gravitational gradient would effect things though.
SkyBandit
2023-05-01 03:42:07 +0000 UTCI wonder what inhabiting worlds like this would be like. Someone should definitely do speculative evolution projects around premises like this!
ForbiddenOne42
2023-03-30 17:18:20 +0000 UTC
