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Cloud base information


Photo of a cloud base taken above the island of Sulawesi, Indonesia, in 2005

A cloud base (or the base of the cloud) is the lowest altitude of the visible portion of a cloud. It is traditionally expressed either in metres or feet above mean sea level or above a planetary surface, or as the pressure level corresponding to this altitude in hectopascals (hPa, equivalent to the millibar).

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Cloud base

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A cloud base (or the base of the cloud) is the lowest altitude of the visible portion of a cloud. It is traditionally expressed either in metres or feet...

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Cloud computing

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Cloud computing is the on-demand availability of computer system resources, especially data storage (cloud storage) and computing power, without direct...

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Cloud

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In meteorology, a cloud is an aerosol consisting of a visible mass of miniature liquid droplets, frozen crystals, or other particles suspended in the...

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List of cloud types

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cloud (informal term) – rotating "cloud" of debris found at base of tornado. Funnel cloud (WMO supplementary feature tuba) – rotating funnel of cloud...

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Funnel cloud

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funnel cloud is a funnel-shaped cloud of condensed water droplets, associated with a rotating column of wind and extending from the base of a cloud (usually...

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Mammatus cloud

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or mammatocumulus, meaning "mammary cloud") is a cellular pattern of pouches hanging underneath the base of a cloud, typically a cumulonimbus raincloud...

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Wall cloud

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wall cloud (murus or pedestal cloud) is a large, localized, persistent, and often abrupt lowering of cloud that develops beneath the surrounding base of...

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Cumulus cloud

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thermal that forms the cloud. Humid air will generally result in a lower cloud base. In temperate areas, the base of the cumulus clouds is usually below 550...

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Cumulonimbus cloud

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cumulonimbus clouds are typically accompanied by smaller cumulus clouds. The cumulonimbus base may extend several kilometres (miles) across, or be as small...

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Cloud height

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The cloud height, more commonly known as cloud thickness or depth, is the distance between the cloud base and the cloud top. It is traditionally expressed...

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Cumulus humilis cloud

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by other cloud types. Air below the cloud base can be quite turbulent due to the thermals that formed the clouds, giving occupants of light aircraft an...

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Nimbostratus cloud

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or sleet, but no lightning or thunder. Although it is usually a low-based cloud, it actually forms most commonly in the middle level of the troposphere...

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Stratus cloud

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Stratus clouds are low-level clouds characterized by horizontal layering with a uniform base, as opposed to convective or cumuliform clouds formed by...

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Fractus cloud

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Fractus clouds, also called fractostratus or fractocumulus, are small, ragged cloud fragments that are usually found under an ambient cloud base. They form...

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Ceilometer

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uses a laser or other light source to determine the height of a cloud ceiling or cloud base. Ceilometers can also be used to measure the aerosol concentration...

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IBM Cloud

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IBM Cloud (formerly known as Bluemix) is a set of cloud computing services for business offered by the information technology company IBM. As of 2021...

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Cloud storage

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applications that use the API, such as cloud desktop storage, a cloud storage gateway or Web-based content management systems. Cloud computing is believed to have...

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Tornadogenesis

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violently rotating column of air in contact with the surface and a cumuliform cloud base. Tornado formation is caused by the stretching and aggregating/merging...

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Cirrocumulus cloud

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reaching the ground. Cloud-based supplementary feature: Mamma in the form of downward forming bubbles is infrequently seen as a cloud-based supplementary feature...

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Tornado

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both the surface of the Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. It is often referred to as a twister, whirlwind...

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Cirrus castellanus cloud

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rising from a lower-level cloud base. Often these cloud turrets form in lines, and they can be taller than they are wide. This cloud species is usually dense...

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Arcus cloud

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boundaries and cold fronts. A shelf cloud is a low, horizontal, wedge-shaped arcus cloud attached to the base of the parent cloud, which is usually a thunderstorm...

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Lightning

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inside a single thundercloud (intra-cloud), between two clouds (cloud-to-cloud), or between a cloud and the ground (cloud-to-ground), in which case it is...

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Altostratus cloud

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of the cloud base causes altostratus to become nimbostratus. Unlike most other types of clouds, altostratus clouds are not subdivided into cloud species...

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