A report on Cloud and Cumulus cloud

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Cumulus clouds seen from above
Stratocumuliform cloudscape
Lines of Cumulus clouds over Brittany
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.
Some cumulus mediocris clouds
Cumulus humilis clouds in May
Cumulus congestus clouds compared against a cumulonimbus cloud in the background
Windy evening twilight enhanced by the Sun's angle, can visually mimic a tornado resulting from orographic lift
A large field of cirrocumulus clouds
Nimbostratus cloud producing precipitation
Altocumulus clouds
Cirrus fibratus clouds in March
Stratocumulus clouds
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

Cumulus clouds are clouds which have flat bases and are often described as "puffy", "cotton-like" or "fluffy" in appearance.

- Cumulus cloud

The main representative cloud types for each of these forms are stratiform, cumuliform, stratocumuliform, cumulonimbiform, and cirriform.

- Cloud
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5 related topics with Alpha

Overall

Cumulonimbus calvus cloud in Monterrey, Mexico.

Cumulonimbus cloud

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Cumulonimbus calvus cloud in Monterrey, Mexico.
Partial view of a cumulonimbus cloud, possibly an arcus cloud.
Pyrocumulonimbus with pileus
Stages of a cumulonimbus cloud's life.
Transformation from a mature cumulus congestus cloud to a mature cumulonimbus incus
Cumulonimbus calvus
A clearly developed cumulonimbus fibrous-edged top capillatus
A freeze-frame of a Cumulonimbus cloud in the distance exposing a flash of lightning
Arcus cloud (shelf cloud) leading a thunderstorm
A cap (pileus) atop a congestus
Incus with a velum edge
Mammatocumulus with drooping pouches
A funnel cloud (tuba) over the Netherlands
Flanking line in front of a strong thunderstorm
An overshooting top is a dome of clouds atop a cumulonimbus
Cumulonimbus calvus against sunlight with rain falling beneath it as a rain shaft.
Rain evaporating before reaching the ground (virga)

Cumulonimbus (from Latin cumulus, "heaped" and nimbus, "rainstorm") is a dense, towering vertical cloud, typically forming from water vapor condensing in the lower troposphere that builds upward carried by powerful buoyant air currents.

Towering cumulonimbus clouds are typically accompanied by smaller cumulus clouds.

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.

If the air over land is moist and hot enough, stratocumulus may develop to various cumulus clouds, or, more commonly, the sheet of stratocumulus may become thick enough to produce some light rain.

Late-summer rainstorm in Denmark. Nearly black color of base indicates main cloud in foreground probably cumulonimbus.

Cloud physics

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Study of the physical processes that lead to the formation, growth and precipitation of atmospheric clouds.

Study of the physical processes that lead to the formation, growth and precipitation of atmospheric clouds.

Late-summer rainstorm in Denmark. Nearly black color of base indicates main cloud in foreground probably cumulonimbus.
Windy evening twilight enhanced by the Sun's angle, can visually mimic a tornado resulting from orographic lift

Clouds consist of microscopic droplets of liquid water (warm clouds), tiny crystals of ice (cold clouds), or both (mixed phase clouds).

Small cumulus clouds with little vertical development (species humilis) are also commonly classified as low level.

Higher Czarny Staw pod Rysami lake (elevation 1,583 m) is still frozen as the lower Morskie Oko lake has already almost melted (elevation 1,395 m. Photo from Polish side of the Tatra mountains, May 2019.

Lapse rate

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Rate at which an atmospheric variable, normally temperature in Earth's atmosphere, falls with altitude.

Rate at which an atmospheric variable, normally temperature in Earth's atmosphere, falls with altitude.

Higher Czarny Staw pod Rysami lake (elevation 1,583 m) is still frozen as the lower Morskie Oko lake has already almost melted (elevation 1,395 m. Photo from Polish side of the Tatra mountains, May 2019.
Emagram diagram showing variation of dry adiabats (bold lines) and moist adiabats (dash lines) according to pressure and temperature
The latent heat of vaporization adds energy to clouds and storms.

With further decrease in temperature the water vapor in excess of the equilibrium amount condenses, forming cloud, and releasing heat (latent heat of condensation).

In these conditions, the likelihood of cumulus clouds, showers or even thunderstorms is increased.

Sky containing different types of cirrus clouds

Cirrus cloud

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Sky containing different types of cirrus clouds
A vast shield of cirrus clouds accompanying the west side of Hurricane Isabel
White cirrus in an anvil cloud
High cloud weather map symbols
Cirrus clouds merging to cirrocumulus clouds
Circumhorizontal arc
Heights of various cloud genera including high-, mid-, and low-level clouds
Large field of cirrocumulus clouds
Cirrostratus cloud
Cirrus clouds on Neptune, captured during Voyager 2 's flyby

Cirrus (cloud classification symbol: Ci) is a genus of high cloud made of ice crystals.

They are the genera cumulus, and cumulonimbus, and nimbostratus.