As a result, they are being analyzed to increase our understanding of how these upper-level ice clouds influence the Earth's radiation budget.

He peered through the thinning ice cloud as the stranger stepped forward.

That may mean that the cometary fragments just barely impinged on the ice clouds.

Month after month, ice clouds masked the swollen Bloody Sun.

Shall we evade this rock swarm at the price of running that ice cloud?

The ice clouds have always been there and exist nowhere else.

These are ice clouds which are situated much above normal cloud layers at 80 km or so.

Looking up, Silverhair saw ice clouds scudding hard across the sky.

During the Antarctic winter (our spring) there is little light, and ice clouds form within the vortex.

Bright and full against the dark star-strewn sky, Phobos climbed behind a low wisp of ice cloud.