Atmospheric Circulation: Wind, Weather, and Mordor

Artifexian · 285K views · 2018 · 9:22

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Scientific method & science communicationEveryday physics & science demosClimate science & climate changeexplainer

Why Worldbuilding Stack Exchange recommends it

Worldbuilding Stack Exchange answerers point people to it when they need a practical introduction to atmospheric circulation cells and wind patterns for designing a fictional planet's climate.

Recommended by 4 people across 3 different months, 2019 to 2023.

What it is

A short explainer from the worldbuilding channel Artifexian on how global wind and weather patterns arise on a planet, covering convection cells, the Coriolis effect and how to place winds and storms on a fictional map. It uses Tolkien's Mordor as an example of a place with near-constant storms.

What people said

Recommends TheDyingOfLight · 2019-09 · Worldbuilding Stack Exchange · on “Northern Great Lakes in an Alternate Island Africa--Would the Sahara DESERT Still be Around?”

@JohnWDailey Just write me here and I'll drop a throwaway e-mail address as a comment. However, I learned most of my climate building knowledge from Artifexian [LINK] , a Worldbuilding-Youtuber. Fantasy Maps & Plate Tectonics [LINK] , Atmospheric Circulation [this video] , Ocean Currents [LINK] and How To Design Realistic Climates 1 [LINK] should help you.

Recommends Nepthys X · 2019-09 · Worldbuilding Stack Exchange · on “How to calculate atmospheric circulation cells”

This [this video] might help. It's a video by Artifexian. He makes a lot of good videos about worldbuilding that might help you out.

Recommends LuizPSR · 2020-11 · Worldbuilding Stack Exchange · on “Help with Pressure, Winds, Precipitation and Climate Zone”

Well, the youtube channel Artifexian have some videos on this topic, he also deals with a more hyper realistic worldbuilding that you might be interest. How To Design Realistic Climates 1 [LINK] How To Design Realistic Climates 2 [LINK] Hot & Cold Planet Climates [LINK] Terrestrial, Waterworld & Tidally Locked Planets [LINK] Climate Zones Of RETROGRADE Planets [LINK] Wind, Weather, and Mordor [this video]

Recommends Ash · 2022-02 · Worldbuilding Stack Exchange · on “Can an Earthlike planet orbiting a K-type star have longer days and extreme thunderstorms?”

If you want periodic thunderstorms that are seasonal , so there are times of the year when they're likely and others when they are not, then you want a world with very similar conditions to Earth and the location in question will be located in the temperate latitudes [LINK] . Part of what defines temperate climates is the fact that they have very distinct seasons. On the other hand if you want to have a place that experiences strong storm activity at more random and unpredictable intervals then a maritime climate [LINK] is a more realistic setting. The only other note I have is that a world with the same circumference as Earth and a 30hr day will have a different Hadley cell [LINK] format, d

Cites Nierninwa · 2019-09 · Worldbuilding Stack Exchange · on “How would the atmospheric circulation look like on a planet with high axial tilt?”

So the axial tilt doesn't actually influence the number of convection cells very much, afaik. It does , however, affect their position [LINK] . You might also want to note that a world with a 90° axial tilt would essentially present on side to its star half the year and the other half the rest of the year. That means a long day which is summer and a long night which is winter. This leads to some EXTREME weather patterns that until recently were though impossible to overcome (well, at the very least it was thought to be the case for tidally locked planets, but recent simulations show a fast enough spin can compensate that effect). In the case of a 90° planet, the spin will have no effect on s

Cites JuimyTheHyena · 2022-08 · Worldbuilding Stack Exchange · on “Harvesting lightnings for energy...in real life Mordor!”

I planned to have a region on my world that is similar to Mordor, as in a place with near constant thunderstorms and lightning strikes, about 30 times per minute at peak for at least 25 hours at night (the world has a rotation period of 60 hours). The idea came from this specific video by the Artifexian [this video] . Now I was wondering if such a place could be reliably exploited for energy, especially the lightnings that would strike it so frequently. Would it be advantageous for a late 21st to early 22nd century civilization to establish power plants over there with lightning rods organized in large fields and probably coupled with wind turbines to take advantage of the weather conditions?

Cites dboggs95 · 2023-03 · Worldbuilding Stack Exchange · on “What is the ideal day length for extreme weather?”

Venusian Days and the Runaway Greenhouse Effect: I think the problem with the question is that there are many factors that can create extreme weather. I'm going off my memory of astronomy class so forgive me if this isn't 100% accurate. Venus's day contributes to its bad weather because the long day causes the sun to cook one side for way too long, then all the water vapor goes to the other side, and since water vapor is a greenhouse gas, the other side gets cooked. Then the whole planet gets so roasted that the interior outgases more water in addition to all the nasty chemicals it has today, forming a feedback loop. I don't think you want to build a planet with a runaway greenhouse effect.

Cites Alon · 2023-12 · Worldbuilding Stack Exchange · on “Wind patterns on a tidally locked planets contradict my logic (looking for correction)”

My take on the wind patterns on a tidally locked planet (TDL) does not lead to the information given in papers and videos. Please tell me where I went wrong. My take: On a TLP, the sub-solar point is a region of low air pressure (due to its high temperature), while the night side has relative higher air pressure. Wind flows from high to low air pressure, resulting in a wind pattern as depicted below (ground level). [LINK] Additionally, the coriolis effect leads to (ground level) winds to the west, similar to earth (earth has three cells per hemisphere, but since this planet rotates slower and for simplicity, it has only one cell per hemisphere - also, I'm assuming the same direction of rotat