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snow grains
noun
- precipitation consisting of white, opaque ice particles usually less than one millimeter in diameter.
Word History and Origins
Origin of snow grains1
Example Sentences
These include warming temperatures, pollution, dust and even the shape of snow grains as they pack together on the ground.
"There's clean snow and there's dirty snow, and how they respond to sunlight is very different. And then there are the shapes of the snow grains, which are anything but uniform. These all affect the snowpack."
Spherical snow grains would absorb more sunlight and melt more snow; the odd shapes of real flakes reflect more sunlight and melt less snow.
Earlier this year, Hao and colleagues noted that the varied shapes of real snow grains make snow melt more slowly than in models where grains are assumed to be uniformly spherical.
Radar, in theory, can penetrate the surface of a blanket of snow and return an accurate picture of its density by detailing the shape and size of snow grains and how densely packed they are.
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