A report on Altocumulus cloud

Middle cloud weather map symbols: Includes middle-étage and downward growing vertical.
Altocumulus perlucidus
Altocumulus lenticularis
Altocumulus at sunset
Altocumulus floccus with line of castellanus
Altocumulus during the day
Altocumulus undulatus during a cold front
Altocumulus mamma
Altocumulus stratiformis radiatus

Middle-altitude cloud genus that belongs mainly to the stratocumuliform physical category characterized by globular masses or rolls in layers or patches, the individual elements being larger and darker than those of cirrocumulus and smaller than those of stratocumulus.

- Altocumulus cloud
Middle cloud weather map symbols: Includes middle-étage and downward growing vertical.

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Cloud

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Aerosol consisting of a visible mass of miniature liquid droplets, frozen crystals, or other particles suspended in the atmosphere of a planetary body or similar space.

Aerosol consisting of a visible mass of miniature liquid droplets, frozen crystals, or other particles suspended in the atmosphere of a planetary body or similar space.

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Stratocumuliform cloudscape
Tropospheric cloud classification by altitude of occurrence: Multi-level and vertical genus-types not limited to a single altitude level include nimbostratus, cumulonimbus, and some of the larger cumulus species.
Cumulus humilis clouds in May
Windy evening twilight enhanced by the Sun's angle, can visually mimic a tornado resulting from orographic lift
Nimbostratus cloud producing precipitation
Cirrus fibratus clouds in March
Stratocumulus over Orange County.
Stratocumulus cloud
Cumulus humilis clouds
Cumulonimbus cloud over the Gulf of Mexico in Galveston, Texas
High cirrus upper-left merging into cirrostratus and some cirrocumulus upper right
A large field of cirrocumulus
Sunrise scene giving a shine to an altocumulus stratiformis perlucidus cloud (see also 'species and varieties')
Altostratus translucidus near top of photo merging into altostratus opacus near bottom
Cumulus humilis clouds over Jakarta, Indonesia
Stratocumulus stratiformis perlucidus over Galapagos, Tortuga Bay (see also 'species and varieties')
Stratus nebulosus translucidus
Deep multi-level nimbostratus cloud covering the sky with a scattered layer of low stratus fractus pannus (see also 'species' and 'supplementary features' sections)
Cumulus humilis and cumulus mediocris with stratocumulus stratiformis perlucidus in the foreground (see also 'species and varieties')
Towering vertical cumulus congestus embedded within a layer of cumulus mediocris: Higher layer of stratocumulus stratiformis perlucidus.
Progressive evolution of a single cell thunderstorm
Isolated cumulonimbus cloud over the Mojave Desert, releasing a heavy shower
Altocumulus lenticularis forming over mountains in Wyoming with lower layer of cumulus mediocris and higher layer of cirrus spissatus
Example of a castellanus cloud formation
Cumulus mediocris cloud, about to turn into a cumulus congestus
A layer of stratocumulus stratiformis perlucidus hiding the setting sun with a background layer of stratocumulus cumulogenitus resembling distant mountains.
Cirrus fibratus radiatus over ESO's La Silla Observatory
Altocumulus stratiformis duplicatus at sunrise in the California Mojave Desert, USA (higher layer orange to white; lower layer grey)
Cumulus partly spreading into stratocumulus cumulogenitus over the port of Piraeus in Greece
Cumulonimbus mother cloud dissipating into stratocumulus cumulonimbogenitus at dusk
Cirrus fibratus intortus formed into a Kármán vortex street at evening twilight
Global cloud cover, averaged over the month of October 2009. NASA composite satellite image.
Lenticular nacreous clouds over Antarctica
Noctilucent cloud over Estonia
Joshua Passing the River Jordan with the Ark of the Covenant (1800) by Benjamin West, showing Yahweh leading the Israelites through the desert in the form of a pillar of cloud, as described in
Stratocumulus stratiformis and small castellanus made orange by the sun rising
An occurrence of cloud iridescence with altocumulus volutus and cirrocumulus stratiformis
Sunset reflecting shades of pink onto grey stratocumulus stratiformis translucidus (becoming perlucidus in the background)
Stratocumulus stratiformis perlucidus before sunset. Bangalore, India.
Late-summer rainstorm in Denmark. Nearly black color of base indicates main cloud in foreground probably cumulonimbus.
Particles in the atmosphere and the sun's angle enhance colors of stratocumulus cumulogenitus at evening twilight
Total cloud cover fraction averaged over the years 1981-2010 from the CHELSA-BIOCLIM+ data set

The stratocumuliform group is divided into cirrocumulus (high-level, strato- prefix dropped), altocumulus (mid-level, strato- prefix dropped), and stratocumulus (low-level).

High cloud weather map symbols

Cirrocumulus cloud

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One of the three main genus-types of high-altitude tropospheric clouds, the other two being cirrus and cirrostratus.

One of the three main genus-types of high-altitude tropospheric clouds, the other two being cirrus and cirrostratus.

High cloud weather map symbols
Cirrocumulus clouds on a summer afternoon
Cirrocumulus undulatus clouds

Cirrocumulus is distinguished from altocumulus in several ways, although the two stratocumuliform genus types can occasionally occur together with no clear demarcation between them.

Rain from stratocumulus cloud cover

Stratocumulus cloud

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Rain from stratocumulus cloud cover
Stratocumulus mamma
Stratocumulus stratiformis
Stratocumulus lenticularis
Stratocumulus castellanus
Stratocumulus undulatus clouds, seen from an airplane
Stratocumulus undulatus asperitas clouds, seen from Earth
Stratocumulus radiatus
Stratocumulus duplicatus; Stratocumulus stratiformis (right) and Stratocumulus floccus (left)
Stratocumulus lacunosus
Stratocumulus stratiformis opacus radiatus praecipitatio

A stratocumulus cloud, occasionally called a cumulostratus, belongs to a genus-type of clouds characterized by large dark, rounded masses, usually in groups, lines, or waves, the individual elements being larger than those in altocumulus, and the whole being at a lower height, usually below 2000 m. Weak convective currents create shallow cloud layers because of drier, stable air above preventing continued vertical development.

Mackerel sky over Erlangen, Germany

Mackerel sky

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Mackerel sky over Erlangen, Germany
Mackerel sky over Metung, Victoria, Australia
Mackerel sky over Heidelberg, Germany
Rubens' A View of Het Steen in the Early Morning
Altocumulus mackerel sky clouds over Burlington, Canada.

A mackerel sky is a common term for clouds made up of rows of cirrocumulus or altocumulus clouds displaying an undulating, rippling pattern similar in appearance to fish scales; this is caused by high altitude atmospheric waves.

Lenticular cloud over the Antarctic ice near Scott Base.

Lenticular cloud

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Lenticular clouds (Latin: Lenticularis lentil-shaped, from lenticula lentil) are stationary clouds that form mostly in the troposphere, typically in parallel alignment to the wind direction.

Lenticular clouds (Latin: Lenticularis lentil-shaped, from lenticula lentil) are stationary clouds that form mostly in the troposphere, typically in parallel alignment to the wind direction.

Lenticular cloud over the Antarctic ice near Scott Base.
A lenticular cloud covers the summit crater of Mayon Volcano, Philippines.

There are three main types of lenticular clouds: altocumulus standing lenticular (ACSL), stratocumulus standing lenticular (SCSL), and cirrocumulus standing lenticular (CCSL), varying in altitude above the ground.

Altocumulus stratiformis

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Altocumulus stratiformis is the most common species of the Altocumulus genus of clouds.