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Sublimation of snow from the surface returns water to the atmosphere

  • A.without the snow passing through the liquid phase
  • B.only after the snow has first melted to liquid
  • C.at a rate entirely independent of the wind speed
  • D.only at temperatures well above freezing point

Answer: A

Solid ice passes directly to vapour when the air is dry enough. In windy cold environments it can remove a substantial fraction of the snow that fell. Blowing snow greatly accelerates the loss. Snowpack budgets in polar regions must account for it.

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