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Old 03-12-2020, 10:47 PM   #4
Agemegos
 
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Join Date: May 2005
Location: Oz
Default Re: [Space] Climate & habitability of tide-locked planets

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Originally Posted by AlexanderHowl View Post
Tide locked worlds are probably unlikely to be habitable by humans outside of the thin twilight zone
Really? I just finished explaining why that belief is outdated.

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Now, cooler worlds with tidelocking could potentially allow for more habitable area, but the nightside would be absolutely frozen in the case. With an average atmosphere, the dayside is +20% while the nightside is -20%,
Not according to the scientific papers I cited in the OP.

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meaning that a 240K world
Earth's average surface temperature is about 288 K.

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would be 288K on dayside and 192K nightside.
Merlis & Schneider (op. cit.) used a global circulation model and found that a synchronously rotating Earth would have a temperature a little over 300 K in the middle of the daylit side and about 250 K over a huge stretch of the dark side. And I told you about that in the message you are replying to.

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One problem though is that carbon dioxide snows at the nigh side temperature, so the biosphere would collapse, as there would be no carbon dioxide in the atmosphere to allow for photosynthesis.
Dude! Did you even read my post?

The belief that CO₂ will snow out on the dark side was debunked by Joshi et al in 1997. I explained that and both cited and linked my source in the very post that you are replying to.
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Last edited by Agemegos; 03-13-2020 at 12:13 AM.
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