like not melting to water but an ice cube left out side will slowly get smaller even when its super cold out.
In: 5
This depends on a lot of things.
But generally, if you’re seeing snow and ice melt below freezing either salt has been dispensed and that lowers the freezing temp of H20, making it liquify and run off.
Sunlight can also make snow and ice melt as it raises the temp of the material at the surface even if the surrounding air temp in lower.
Also if the surrounding air temp is higher than freezing for some reason (near a building or roadway where excess heat might radiate), then the temp might be high enough in the immediate area to melt the snow/ice but the overall, aggregate temp of the entire surrounding area might be below freezing.
Those are just a few examples.
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