Titan-like methane rich atmospheres

[Enio]

Hi. I want to know what would be the correct color of a methane rich atmosphere similar to Titan. But one thing here is different: the amount of methane is many times higher and is concentrated on the troposphere, while higher layers of such atmosphere are rich in heavier compounds forming the orange haze.

Blue methane atmosphere


Green methane atmosphere


So a planet with high amounts of methane will tend to be green or blue?

[Enio]

So many views and no answer?

Someone sad that methane gas is blue, but that a world full of methane will tend to be green. But I'm confused. I only need to know that simple answer.

[Reiko]

I read somewhere it is supposed to be greenish.

[julesstoop]

I remember a thread a while ago about the relationship between the spectrall class (color temperature) of a parent star, the density of he atmosphere and color of the sky of the model planet.

Since these two factors have a large influence on the color of the sky, it seems we might need some more information.

By the way: if the orange haze is thick enough, most of the blue might be already filtered out before the sunlight reaches the lower atmosphere.

[Enio]

So it's supposed to be green. Yeah, such planet is orbiting M0V and M5V stars. M stars produce low blue light and such planet with that orange haze. Yes, I think the true color would be green.