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Altocumulus undulatus cloud Reference Libraries

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Altocumulus
2009-07-04 15:40:07

Altocumulus clouds belong to a class distinguished by globular masses or rolls in layers or patches. These clouds are larger and darker than cirrocumulus and smaller than stratocumulus. Like other cumulus clouds, altocumulus indicates a vertical and upward transference of atmospheric conditions. Altocumulus are often seen preceding a cold front, and their presence on a warm, humid, summer...

Cirrocumulus
2009-07-04 15:02:09

Cirrocumulus clouds are high-altitude clouds that mainly occur between 16,000 and 40,000 feet. Like most cumulus clouds, these clouds indicate a vertical and upward transference of atmospheric conditions. Unlike other cirrus clouds, cirrocumulus composition includes super-cooled liquid water droplets. Ice crystals are also present, and usually, the ice crystals cause the droplets in the cloud...

Word of the Day
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'