It’s actually Rayleigh-scatter we are talking about here. During the day, it gives you your blue sky, or at least it contributes to it. In the evening, however, a lot of the warm light lingers around in the atmosphere – well, it doesn’t really, but you know what it means. It’s like a sunset.
Now realize that up here in the Arctic the Sun is so low in the sky that we basically have “evening” sun every single day.
Not that I would ever hear myself complaining about that. 🙂
When nature applies a warm-color-filter
Space for Science 