Cumulus cloud

cumulusCloudcumulus cloudscumuliform cloudcumuliformconvective cloudsCucumuliPuffy cloudstowering cumulus
Cumulus clouds are clouds which have flat bases and are often described as "puffy", "cotton-like" or "fluffy" in appearance.wikipedia
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Cumulus congestus cloud

cumulus congestustowering cumulusCumulus castellanus
Cumulus clouds are low-level clouds, generally less than in altitude unless they are the more vertical cumulus congestus form.
Cumulus congestus clouds, also known as towering cumulus, are a form of cumulus cloud that can be based in the low or middle height ranges.

Atmospheric convection

convectionconvectiveconvective activity
Cumulus clouds form via atmospheric convection as air warmed by the surface begins to rise.
Mixing of air during the day which expands the height of the planetary boundary layer leads to increased winds, cumulus cloud development, and decreased surface dew points.

Cloud

cloudscloud formationcloudy
Cumulus clouds are clouds which have flat bases and are often described as "puffy", "cotton-like" or "fluffy" in appearance.
Depending on their vertical size, clouds of the cumulus genus type may be low-level or multi-level with moderate to towering vertical extent.

Stratocumulus cloud

stratocumulusScstratocumulus castellanus
There are also cumuliform clouds of limited convection that comprise stratocumulus (low-étage), altocumulus (middle-étage) and cirrocumulus (high-étage).
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.

Inversion (meteorology)

temperature inversioninversioninversion layer
The height of the cloud (from its bottom to its top) depends on the temperature profile of the atmosphere and the presence of any inversions.
Sometimes the inversion layer is at a high enough altitude that cumulus clouds can condense but can only spread out under the inversion layer.

Tornado

tornadoestornadicwedge tornado
Cumulus arcus clouds have a gust front, and cumulus tuba clouds have funnel clouds or tornadoes.
A tornado is a rapidly rotating column of air that is in contact with both the surface of the Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud.

Cumulus humilis cloud

Cumulus humilis
Cumulus humilis clouds usually indicate fair weather.
Cumulus humilis are cumuliform clouds with little vertical extent, common in the summer, that are often referred to as "fair weather cumulus".

List of cloud types

cloud typescloud typetranslucidus
The latter genus-type is sometimes categorized separately as cumulonimbiform due to its more complex structure that often includes a cirriform or anvil top.

Supercooling

supercooledsupercoolsupercooled water
Cumulus clouds can be composed of ice crystals, water droplets, supercooled water droplets, or a mixture of them.
Droplets of supercooled water often exist in stratus and cumulus clouds.

Pileus (meteorology)

Pileuscloudpileus cloud
Cumulus pileus clouds refer to cumulus clouds that have grown so rapidly as to force the formation of pileus over the top of the cloud.
A pileus (Latin for "cap"), also called scarf cloud or cap cloud, is a small, horizontal, lenticular cloud appearing above a cumulus or cumulonimbus cloud.

Cumulonimbus cloud

cumulonimbusthundercloudcumulonimbus clouds
Cumulus clouds are often precursors of other types of clouds, such as cumulonimbus, when influenced by weather factors such as instability, moisture, and temperature gradient.
Towering cumulonimbus clouds are typically accompanied by smaller cumulus clouds.

Lapse rate

adiabatic lapse ratedry adiabatic lapse ratemoist adiabatic lapse rate
As the air rises, the temperature drops (following the lapse rate), causing the relative humidity (RH) to rise.
In these conditions, the likelihood of cumulus clouds, showers or even thunderstorms is increased.

Cloud physics

cloud microphysicscloud physicistMicrophysics
Rain forms in a cumulus cloud via a process involving two non-discrete stages.
Small cumulus clouds with little vertical development (species humilis) are also commonly classified as low level.

Cloud suck

sucked
Glider pilots often pay close attention to cumulus clouds, as they can be indicators of rising air drafts or thermals underneath that can suck the plane high into the sky—a phenomenon known as cloud suck.
Cloud suck is a phenomenon commonly known in paragliding, hang gliding, and sailplane flying where pilots experience significant lift due to a thermal under the base of cumulus clouds, especially towering cumulus and cumulonimbus.

Thermal

thermalsthermal columnthermal lift
Glider pilots often pay close attention to cumulus clouds, as they can be indicators of rising air drafts or thermals underneath that can suck the plane high into the sky—a phenomenon known as cloud suck.
Thermals are often indicated by the presence of visible cumulus clouds at the top of the thermal.

Entrainment (meteorology)

entrainmententrainedentrain
During the convection, surrounding air is entrained (mixed) with the thermal and the total mass of the ascending air increases.
Cumulus clouds have a significant impact on transport of energy and water vapor, and then influence precipitation and climate.

Waterspout

waterspoutswater spouttornadic waterspout
Cumulonimbus clouds, commonly called thunderheads, can produce high winds, torrential rain, lightning, gust fronts, waterspouts, funnel clouds, and tornadoes.
Some are connected to a cumulus congestus cloud, some to a cumuliform cloud and some to a cumulonimbus cloud.

Funnel cloud

condensation funnelfunnel cloudsfunnel
Cumulus arcus clouds have a gust front, and cumulus tuba clouds have funnel clouds or tornadoes. Cumulonimbus clouds, commonly called thunderheads, can produce high winds, torrential rain, lightning, gust fronts, waterspouts, funnel clouds, and tornadoes.
A 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 a cumulonimbus or towering cumulus cloud) but not reaching the ground or a water surface.

Cold front

cold frontsArctic blastcold
They are less common in tropical areas and commonly form after cold fronts.
With significant airmass instability, vertically developed cumulus or cumulonimbus with showers and thunderstorms will form along the front.

Drizzle

drizzlydrizzlingorballo
Stratocumulus clouds can produce drizzle, which stabilizes the cloud by warming it and reducing turbulent mixing.
These regions are dominated by shallow marine stratocumulus and trade wind cumulus clouds, which exist entirely within the marine boundary layer.

Cirrus cloud

cirruscirrus cloudsCirriform
However, at the same time, they heat the earth by around 7 C-change by reflecting emitted radiation, an effect largely caused by cirrus clouds.
They comprise the genera cumulus, and cumulonimbus, which along with nimbostratus, are often classified separately as clouds of vertical development, especially when their tops are high enough to be composed of super-cooled water droplets or ice crystals.

Horseshoe cloud

A short-lived horseshoe cloud may occur when a horseshoe vortex deforms a cumulus cloud.
They occur when a horseshoe vortex deforms a cumulus cloud, The clouds are relatively short-lived.

Latin

Latin languageLat.la
Their name derives from the Latin cumulo-, meaning heap or pile.

Atmospheric instability

instabilityunstableAtmospheric stability
Cumulus clouds are often precursors of other types of clouds, such as cumulonimbus, when influenced by weather factors such as instability, moisture, and temperature gradient.

Altocumulus cloud

altocumulusAc
There are also cumuliform clouds of limited convection that comprise stratocumulus (low-étage), altocumulus (middle-étage) and cirrocumulus (high-étage).