How would weather differ on a planet with a longer day?

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SUMMARY

The discussion centers on the implications of a longer planetary day, specifically a 100-hour day, on weather patterns. Key points include the uninhabitability of hot desert afternoons, challenges in polar climates due to frost traps, and increased temperature swings leading to severe thunderstorms. The conversation also explores the effects of slower planetary rotation on Coriolis forces, suggesting that cyclonic storms may become larger and that Hadley circulation could change to fewer but larger cells. Participants seek recommendations for exometeorology simulators to model these hypothetical scenarios.

PREREQUISITES
  • Understanding of planetary rotation and its effects on weather systems
  • Knowledge of Coriolis effect and its role in meteorology
  • Familiarity with Hadley circulation dynamics
  • Basic concepts of exometeorology and simulation tools
NEXT STEPS
  • Research the Coriolis effect and its impact on storm formation
  • Explore Hadley circulation and its variations under different planetary conditions
  • Investigate exometeorology simulators for modeling weather on hypothetical planets
  • Study the relationship between day length and temperature fluctuations in planetary atmospheres
USEFUL FOR

This discussion is beneficial for planetary scientists, meteorologists, science fiction writers, and anyone interested in the effects of planetary rotation on climate and weather systems.

Sherwood Botsford
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Hypothetical question that came up in World Building stack exchange.

The question asked for what the longest reasonable day length would be.

I thought that a 100 hour day:
* Afternoons in what are now hot deserts would be uninhabitable.
* Frost traps in more polar climates would be difficult.
* Higher temperature swings would result in a huge (yuge?) afternoon thunderstorms.

Now I started to get on thin ice.

With a slower rotation, coriolis forces will be smaller. Would this make cyclonic storms larger?

Would the hadley circulation change -- fewer, but larger cells. Bigger weather system that moved more slowly?

Anyone point me to a good exometeorology simulator?
 
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Sherwood Botsford said:
Hypothetical question that came up in World Building stack exchange.

The question asked for what the longest reasonable day length would be.

I thought that a 100 hour day:
* Afternoons in what are now hot deserts would be uninhabitable.
* Frost traps in more polar climates would be difficult.
* Higher temperature swings would result in a huge (yuge?) afternoon thunderstorms.

Now I started to get on thin ice.

With a slower rotation, coriolis forces will be smaller. Would this make cyclonic storms larger?

Would the hadley circulation change -- fewer, but larger cells. Bigger weather system that moved more slowly?

Anyone point me to a good exometeorology simulator?
I though coriolis force and centrifugal force were in the same group - non-existent ficticious forces.
The coriolis affect and centrifugal effect maybe, but not force.
 

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