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Author Topic: 0-D climate model  (Read 1087 times)

Bobbyk

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0-D climate model
« on: August 30, 2015, 06:12:38 AM »
I have some questions/comments regarding the 0-D climate (not the 1-D model, which for an exoplanet system with multiple planets of interests seems to be too slow to run):

1) It would be nice if the radiative temperature as well as the surface temperature were reported out.

2) What are the constraints on the magnitude of the greenhouse effect? For Earth type planets, it seems to get this much above 40-50 C.

3)Would it be possible to report out the height of the effective radiating level, and possibly some information about the assumed thermal structure of the atmosphere?

4) It doesn't appear that an Earth class planet develops a runaway greenhouse feedback as its surface gets increasingly hot. Would this be possible to implement?

5) More generally, is it possible to track the amount of water on a planet and its partitioning between the atmosphere and the surface, and to factor this into calculations of the lapse rate and the greenhouse effect?

6) What are the assumptions underlying the habitable zone calculation?

C7

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Re: 0-D climate model
« Reply #1 on: September 02, 2015, 12:08:01 AM »
The current temperature modelling is very simple for planets without climate. We're working on a system to improve that, but it wasn't ready for Alpha 16. Hopefully we can get it finished for Alpha 17, as it's a fairly complicated and interconnected thing.

As well, the atmospheric modelling is due to be overhauled at some point in the future. Both of these things should resolve most of the points you've mentioned.

5. Right now the surface water is only on the surface and doesn't link up to the atmospheric model. We hope to fix that in the future.

6. Here is more information on the habitable zones, and the assumptions they carry.
https://en.wikipedia.org/wiki/Circumstellar_habitable_zone