A cloud is a visible mass of condensation droplets or ice crystals suspended in the atmosphere above the surface of the Earth or another planetary body. The branch of meteorology that studies clouds is nephology. On Earth, the condensing substance is water vapor, which forms small droplets of water (typically 0.01 mm of ice crystals) that, when surrounded with billions of other droplets or crystals, are visible as clouds. Clouds reflect all visible wavelengths of light equally and are usually white, but they can appear grey or ...

Including:

• Cloud - Cloud formation and properties
• Cloud - Hot Ice and Ice Memory in cloud formation
• Cloud - Cloud classification
• Cloud - High clouds Family A
• Cloud - Middle clouds Family B
• Cloud - Low clouds Family C
• Cloud - Vertical clouds Family D
• Cloud - Other clouds
• Cloud - Colors of clouds
• Cloud - Global dimming
• Cloud - Clouds on other planets

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Cloud, Cloud - Cloud formation and properties, Cloud - Hot Ice and Ice Memory in cloud formation, Cloud - Cloud classification, Cloud - High clouds Family A, Cloud - Middle clouds Family B, Cloud - Low clouds Family C, Cloud - Vertical clouds Family D, Cloud - Other clouds, Cloud - Colors of clouds, Cloud - Global dimming, Cloud - Clouds on other planets

Read more here: » Cloud: Encyclopedia II - Cloud - Cloud classification

Clouds are divided into two general categories: layered and convective. These are named stratus clouds (or stratiform, the Latin stratus means layer) and cumulus clouds (or cumuliform, cumulus means piled up). These two cloud types are divided into four more groups that distinguish the cloud's altitude. Clouds are classified by the cloud base height, not the cloud top. This system was proposed by Luke Howard in 1802 in a presentation to the Askesian Society. ...

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Cloud, Cloud - Cloud formation and properties, Cloud - Hot Ice and Ice Memory in cloud formation, Cloud - Cloud classification, Cloud - High clouds Family A, Cloud - Middle clouds Family B, Cloud - Low clouds Family C, Cloud - Vertical clouds Family D, Cloud - Other clouds, Cloud - Colors of clouds, Cloud - Global dimming, Cloud - Clouds on other planets

Read more here: » Cloud: Encyclopedia II - Cloud - Cloud classification

Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals. This can happen in two ways. http://www.ems.psu.edu/~fraser/Bad/BadClouds.html 1. The air is cooled below its saturation point. This happens when the air comes in contact with a cold surface or a surface that is cooling by radiation, or the air is cooled by adiabatic expansion (rising). This can happen along warm and cold fronts (frontal lift), where air flows up the side of a mountain and cools as ...

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Cloud, Cloud - Cloud formation and properties, Cloud - Hot Ice and Ice Memory in cloud formation, Cloud - Cloud classification, Cloud - High clouds Family A, Cloud - Middle clouds Family B, Cloud - Low clouds Family C, Cloud - Vertical clouds Family D, Cloud - Other clouds, Cloud - Colors of clouds, Cloud - Global dimming, Cloud - Clouds on other planets

Read more here: » Cloud: Encyclopedia II - Cloud - Cloud formation and properties

Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals. This can happen in three ways. 1. The air is cooled below its saturation point. This happens when the air comes in contact with a cold surface or a surface that is cooling by radiation, or the air is cooled by adiabatic expansion (rising). This can happen along warm and cold fronts (frontal lift), where air flows up the side of a mountain and cools as it rises higher into the atmosphere (orographic lift),< ...

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Cloud, Cloud - Cloud formation and properties, Cloud - Hot Ice and Ice Memory in cloud formation, Cloud - Cloud classification, Cloud - High clouds Family A, Cloud - Middle clouds Family B, Cloud - Low clouds Family C, Cloud - Vertical clouds Family D, Cloud - Other clouds, Cloud - Colors of clouds, Cloud - Global dimming, Cloud - Clouds on other planets

Read more here: » Cloud: Encyclopedia II - Cloud - Cloud formation and properties

The Cloud base is the lowest portion of a cloud. A ceilometer is used to measure the height of the cloud base. Knowing the height of the cloud base is important in aviation as aircraft flying via Visual Flight Rules (VFR) must maintain a minimum distance from clouds and a minimum range of flight visibility [1]. ...

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Cloud albedo is a measure of the reflectivity of a cloud - higher values mean that the cloud can reflect more solar radiation. Cloud albedo varies from less than 10% to more than 90% and depends on drop sizes, liquid water or ice content, thickness of the cloud, and the sun's zenith angle. The smaller the drops and the greater the liquid water content, the greater the cloud albedo, if all other factors are the same. Other related archivesalbedo, cloud, solar radiation, sun, water

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Altostratus is a cloud belonging to a class characterized by a generally uniform gray sheet or layer, lighter in color than nimbostratus and darker than cirrostratus. Compare also with lower altitude stratus clouds. Altostratus is caused by a large air mass that is lifted then condensed, usually by an incoming frontal system. Altostratus clouds can be found over wide-spread areas. Altostratus clouds are potentially dang ...

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Cloud seeding is the attempt to change the amount or type of precipitation that falls out of clouds or the structure of clouds by dispersing substances into the air which allow water droplets or ice crystals to form more easily. The most common chemicals used for cloud seeding include silver iodide and dry ice (frozen carbon dioxide). These chemicals may be dispersed by aircraft or by dispersion devices located on the ground. For example, silver iodide flares will be ignited as an aircraft flies through a cloud. When released b ...

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A wall cloud is a cloud formation. It is a lowering beneath the rain-free portion of a thunderstorm, and indicates the area of maximum updraft. In the special case of a supercell thunderstorm, the wall cloud will often be seen to be rotating. It is the area of the thunderstorm which is most likely to produce tornadoes. They can extend from a being a fraction of a mile wide to over five miles across, and typically form at the s ...

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A cloud forest is a generally tropical or subtropical evergreen montane forest characterized by a high incidence of low-level cloud cover, usually at the canopy level. Typically, there is a relatively small band of altitude in which the atmospheric environment is suitable for rain forest development. This is characterized by persistent mist or clouds at the vegetation level, resulting in the reduction of direct sunlight and thus of evapotranspiration. Trees in these regions are generally shorter and more heavily stemmed than in ...

Including:

• Cloud forest - Distribution of cloud forests
• Cloud forest - Temperate cloud forests
• Cloud forest - Distribution of temperate cloud forests

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Cloud feedback is the coupling between cloudiness and surface air temperature in which a change in surface temperature could lead to a change in clouds, which could then amplify or diminish the initial temperature perturbation. For example, an increase in surface air temperature could increase evaporation; this in turn might increase the extent of cloud cover. Increased cloud cover would reduce the solar radiation reaching the Earth's surface, thereby lowering the surface temperature. This is an example of negative feedback and

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Lenticular clouds, technically known as altocumulus standing lenticularis, are stationary lens-shaped clouds that form at high altitudes, normally aligned at right-angles to the wind direction. Where stable moist air flows over a mountain or a range of mountains, a series of large-scale standing waves may form on the downwind side. Lenticular clouds sometimes form at the crests of these waves. Power pilots tend to avoid flying near lenticular clouds because of the turbulence of the rotor systems that accomp ...

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Black Cloud is a 2004 movie directed and written by Rick Schroder. Black Cloud - Story. The movie centers around the journey of personal growth that a young Navajo man, Black Cloud (Eddie Spears), must make to prepare himself for a chance at boxing in the Olympics. When Eddie (Rick Schroder) returns to town with the rodeo and wants to rekindle his relationship with Black Cloud's girlfriend, Sammi (Julia Jones), Black Cloud confronts him and runs into trouble with the sheriff (Tim McGraw). The ...

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• Black Cloud - Story
• Black Cloud - Taglines
• Black Cloud - Cast
• Black Cloud - Director
• Black Cloud - Writer
• Black Cloud - Producers
• Black Cloud - External link

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Cumulus mediocris (from the Latin for "moderate") is a cloud form of the cumulus family, slightly larger in vertical development than Cumulus humilis. It may or may not show the cauliflower form characteristic of cumulus clouds. This cloud type does not produce precipitation, but may evolve into clouds such as Cumulus congestus and Cumulonimbus, which do. Category: Clouds Other related archivesClouds, Cumulonimbus, Cumulus congestus, Cumulus humi

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Cloud types - Cirrus. Abbreviation: Ci These form above 16,500 feet (5,000 m), in the cold region of the troposphere. 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. cirrus cirrus castellanus cirrus radiatus cirrus uncinus cirrus fibratus cirrus spissatus cirrus intortus cirrus vertebratus
Including:

• Cloud types - High-level clouds
• Cloud types - Cirrus
• Cloud types - Cirrocumulus
• Cloud types - Cirrostratus
• Cloud types - Contrail
• Cloud types - Medium-level clouds
• Cloud types - Altostratus
• Cloud types - Altocumulus
• Cloud types - Nimbostratus
• Cloud types - Low-level clouds
• Cloud types - Stratocumlus
• Cloud types - Stratus
• Cloud types - Cumulus
• Cloud types - Vertically developed clouds
• Cloud types - Cumulonimbus
• Cloud types - Other clouds
• Cloud types - The meaning of cloud names
• Cloud types - Main cloud components
• Cloud types - main cloud types
• Cloud types - Main sub-cloud types
• Cloud types - Other cloud types
• Cloud types - Storm Clouds
• Cloud types - clouds associated with the development and duration of storms

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Cumulus congestus clouds are characteristic of unstable areas of the atmosphere which are undergoing convection. Because Cumulus congestus is produced by strong updrafts, it is typically taller than it is wide, and cloud tops can reach 5 000 metres (15 000 feet). Cumulus congestus will mature into Cumulus calvus under conditions of sufficient instability. This cloud type produces precipitation. Category: Clouds Other related archivesClouds, atmos

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A Cirrocumulus is a high-altitude cirriform cloud, occurring at 20,000-40,000 ft or 6,000-12,000 m. Cirrocumulus cloud - Formation. Cirrocumulus is formed from cirrus or cirrostratus clouds when they are warmed gently from below. The heating process causes air to rise and sink inside the cloud. This is why cirrocumulus is almost always associated with cirrus and cirrostratus. If this is not the case, the cloud is then an altocumulus. Cirrocumulus cloud - Appearance. Cirro ...

Including:

• Cirrocumulus cloud - Formation
• Cirrocumulus cloud - Appearance
• Cirrocumulus cloud - Structural characteristics
• Cirrocumulus cloud - Varieties of cirrocumulus

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Cumulonimbus is a type of cloud that is tall, dense, and involved in thunderstorms and other bad weather. The clouds can form alone, in clusters, or along a cold front in a squall line. Cumulonimbus cloud - Formation. To create a cumulonimbus cloud, you need three ingredients. Plenty of moisture. A mass of warm unstable air. A source of energy to lift the warm, moist air mass rapidly upward. Typically, the clouds form around front lines, near oceans where sea bre ...

Including:

• Cumulonimbus cloud - Formation
• Cumulonimbus cloud - Appearance
• Cumulonimbus cloud - Effects
• Cumulonimbus cloud - External link

Read more here: » Cumulonimbus cloud: Encyclopedia - Cumulonimbus cloud

Cirrus uncinus is a type of cirrus cloud. Its name is derived from Latin, meaning curly hooks. Also known as mares' tails, these clouds are generally sparse in the sky, and very thin. The clouds occur at very high altitudes, at a temperature of about minus 40-50 degrees Celsius. They are generally seen when a warm or occluded front is approaching. They are very high in the troposphere, and gener ...

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