Nikolai Lofving Hersfeldt

Public Climate Data Explorations: Habitable Mars

Another tilted Earth climate map

Remember that xkcd what if way back with Earth rotated 90 degrees? https://what-if.xkcd.com/10/ Well I gave it a go in exop...

Symmetric Earth with 90 Obliquity and 0.3 eccentricity

Balanced at -5 C again. I checked the output files and a traversable gap in the ice belt does indeed open up in the Atlantic for a couple months around the equinox following periapsis.

Koppen climate previews

A couple of higher-resolution climate runs I did to get input data for that ice sheet model and final erosion runs; first is an "ice age" climate with 25 degrees tilt and about 12 C average temp, s...

Symmetric Earth with 90 obliquity and 0.1 eccentricity

Finally. My experiment with trying to get it to automatically find the warmest stable ice belt climate never really worked, so I ultimately just had it balance at -5 C, which seems to be close to t...

Public Climate Data Explorations: Future Supercontinents

This'll be the first of a few posts I'll be doing looking at climate models that have already been run for published research and have enough public data available to work out climate zone maps. 2024-05-30 12:05:29 +0000 UTC View Post

Part IVc update

Mostly this one was just tidying up some of the organization, but there's some new stuff in there from recent research and I've made a sort of seperate math section as is sorta my standard for thes...

Hurried Thoughts: Multiple-Moon Tides

Something I hear people worry about a lot so I figured it was worth actually doing some of the math

Teacup Ae Terrain Preview

Bit of a preview of the terrain work I've been doing. This is still wip; each continent has been run at 3 km/pixel resolution for 400,000 years in gospl with uniform precipitation and no uplift. I ...

Earth with 0 obliquity and 4-hour days

Thought I'd run this quickly between a couple other models just as a fun aside; it was not quick. Exoplasim really doesn't like running with such fast rotation. Even this result isn't fully to bala...

Hurried Thoughts: You're Wrong About Tidal-Locking

Put this together most just so that whenever someone repeats the whole "tidal-locked planets will be sunbaked wastelands" myth I'd have a concise rebuttal to link back to. Might not have much new f...

Earth with mirrored topo, 45 tilt, and 0.5 eccentricity

Earth with mirrored topo, 45 tilt, and 0.3 eccentricity

Almost looks like a mix of high-tilt-type climate in the north and low-tilt-type climate in the south.

Also by the way, added a bit of an update to my wilbur erosion script with extras th...

Earth with mirrored topo, 45 tilt, and 0.1 eccentricity

Earth with mirrored topo, 23.5 tilt, and 0.5 eccentricity

Spent an embarassing amount of time trying to figure out why this was crashing just to realize I'd forgot to set the "Keplerian=True" parameter

Hurried Thoughts: You Can't Feed a Society with Mushrooms

This is just a bit of a pet peeve of mine, but I tried to make it a bit interesting.

Metal Resources Preview

So I tend to jump around a lot between working on different future posts (and updates to past posts, I still want to do a few of those); it's a good way to keep up a decent pace of work without get...

Earth with mirrored topo, 23.5 tilt, and 0.3 eccentricity

Honestly wasn't expecting the contrast to be so stark

Earth with mirrored topography, 23.5 degree tilt, and 0.1 eccentricity

This one came through fairly quick. I checked the data and I did indeed set periapsis to coincide with northern summer solstice, overall causing stronger seasons in the north and weaker in the sout...

Earth with mirrored hemispheres

So I decided to put aside my somewhat troublesome runs with varying stars or insolation for the moment and instead do some runs with both obliquity and eccentricity. Trouble is, this might have dif...

Climate Explorations: Eccentricity

Actually had this all ready to go up yesterday and just forgot, and didn't want to wait another week. Given my post frequency I dunno why I really bother with the Tuesdays things anyway.

Climate Mini-Exploration: Shifted Poles

Earth orbiting a K8 star

Now we're seeing a real difference; years here are about 72 days long so there's just not much time for summer.

Attempts to model Earth in orbit of a M5 star have so far been a bit crashy, b...

Earth orbitting a K2-type star

First of the next series of models I'm running after eccentricity, placing earth in orbit of other stars. The general approach here is working out appropriate parameters for a typical main sequence...

Membership testing thing

Patreon's made some changes to how their membership and tiers work and I'm not entirely sure how that's applied to existing members. So I've set the membership threshold at $1 USD a month and I've ...

Earth with different poles

A couple maps done on commission with the position of Earth's poles just shifted around, with the client expressing an interest in little mini-exploration post being done on the blog as well that I...

Earth at 0.6 eccentricity

Starting to get a bit crashy so we'll see how far I can push it

Hurried Thoughts: Phanerozoic Climate Maps

If you've been a patron here a bit you may have already seen these, but I put together a short post on some paleoclimate data I came across and interpreted into climate maps, with a quick tour of t...

exoplasim updates

So recently I went digging around in the exoplasim code and put together a pull request to add some extra behavior for synchronous planets; you can find that here 2023-07-24 10:30:56 +0000 UTC View Post

Earth at 0.5 eccentricity (and zero obliquity)

Sunlight is now reduced to 92% of Earth's if you're wondering