[SamAdams76]

If there is sufficient amount of flat surface, an airplane has decent chance of landing and taking off from such a surface.

[steve86]

The cold, dense air shortens the takeoff roll considerably.

[FreedomNotSafety]

“If there is sufficient amount of flat surface, an airplane has decent chance of landing and taking off from such a surface.”

A sufficient amount of surface is need for any surface for there to be sufficient chance of landing or taking off...successfully. Snow does not change that equation. There must always be a sufficient amount not matter the surface.

And it doesn’t have to be flat.