The 10 main cloud families are divided into three groups on the basis of altitude. High clouds, which are found at mean heights of 45,000–16,500 ft (13–5 km), are, from highest to lowest, cirrus, cirrocumulus, and cirrostratus. Middle clouds, at 23,000–6,500 ft (7–2 km), are altocumulus, altostratus, and nimbostratus. Low clouds, at 6,500–0 ft (2–0 km), are stratocumulus, stratus, cumulus, and cumulonimbus. A shallow layer of cloud at or near ground level is called fog.
2006-10-01 10:44:21
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answer #1
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answered by ALAN 3
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Contents [hide]
1 High-level clouds
1.1 Cirrus
1.2 Cirrocumulus
1.3 Cirrostratus
1.4 Contrail
2 Medium-level clouds
2.1 Altostratus
2.2 Altocumulus
2.3 Nimbostratus
3 Low-level clouds
3.1 Stratocumulus
3.2 Stratus
3.3 Cumulus
2006-10-01 14:46:27
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answer #2
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answered by Robert T 1
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Clouds are generally divided into 4 families: High clouds, Middle clouds, Low clouds, and Vertical clouds.
High clouds
These generally form above 16,500 feet (5,000 m), in the cold region of the troposphere. However, in Polar regions, they may form as low as 10,000 ft (3,048 m). They are denoted by the prefix cirro- or cirrus. At this altitude, water almost always freezes so clouds are composed of ice crystals. The clouds tend to be wispy, and are often transparent.
Clouds in Family A include:
* Cirrus (Ci)
* Cirrus uncinus
* Cirrus Kelvin-Helmholtz colombia
* Cirrostratus (Cs)
* Cirrocumulus (Cc)
* Pileus
* Contrail, a long thin cloud which develops as the result of the passage of an aircraft at high altitudes.
Middle clouds
These develop between 6,500 and 16,500 feet (between 2,000 and 5,000 m) and are denoted by the prefix alto-. They are made of water droplets and are frequently supercooled.
Clouds in Family B include:
* Altostratus (As)
* Altostratus undulatus
* Altocumulus (Ac)
* Altocumulus undulatus
* Altocumulus mackerel sky
* Altocumulus castellanus
* Altocumulus lenticularis
Low clouds
These are found up to 6,500 feet (2,000 m) and include the stratus (dense and grey). When stratus clouds contact the ground, they are called fog.
Clouds in Family C include:
* Stratus (St)
* Nimbostratus (Ns)
* Cumulus humilis (Cu)
* Cumulus mediocris (Cu)
* Stratocumulus (Sc)
Vertical clouds (Family D)
These clouds can have strong up-currents, rise far above their bases and form at many heights.
Clouds in Family D include:
* Cumulonimbus (associated with heavy precipitation and thunderstorms) (Cb)
* Cumulonimbus incus
* Cumulonimbus calvus
* Cumulonimbus with mammatus
* Cumulus congestus
* Pyrocumulus
Other clouds
A few clouds can be found above the troposphere; these include noctilucent and polar stratospheric clouds (or nacreous clouds), which occur in the mesosphere and stratosphere respectively.
2006-10-01 19:16:48
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answer #3
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answered by tombraider 3
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cumulus -heap
stratus- layer
cirrus - curl of hair
nimbus -rain
Further classification identifies clouds by height of cloud base. For example, cloud names containing the prefix "cirr-", as in cirrus clouds, are located at high levels while cloud names with the prefix "alto-", as in altostratus, are found at middle levels. This module introduces several cloud groups. The first three groups are identified based upon their height above the ground. The fourth group consists of vertically developed clouds, while the final group consists of a collection of miscellaneous cloud types.
2006-10-01 11:32:43
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answer #4
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answered by Stephanie F 7
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There are ten groups of clouds (which can be divided into several different cloud types):
Stratus
Stratocumulus
Cumulus
Cumulonimbus
Altocumulus
Altostratus
Nimbostratus
Cirrus
Cirrostratus
Cirrocumulus
2006-10-02 00:57:53
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answer #5
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answered by Barret 3
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Larry, Curly and Moe, sorry i thought u said "clods"
2006-10-01 10:45:59
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answer #6
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answered by Anonymous
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