[bamboozled]

Snow is a near perfect black body radiator

[alexpotato]

This was a key plot point in the 1990s video game: Midwinter

https://en.wikipedia.org/wiki/Midwinter_(video_game)

[richardw]

Therefore imagine the impact of reduced snow and ice due to global warming. It’s free cooling and we’re throwing it away.

[thfuran]

The albedo is the part that's bad to lose. I don't think snow emits especially strongly in the frequencies relevant for this. A highly imperfect blackbody emitter could cool more effectively.