High-level cirriform.2C stratocumuliform.2C and stratiform List of cloud types




1 high-level cirriform, stratocumuliform, , stratiform

1.1 genus cirrus

1.1.1 species


1.2 genus cirrocumulus

1.2.1 high stratocumuliform species


1.3 genus cirrostratus

1.3.1 species







high-level cirriform, stratocumuliform, , stratiform

high clouds form in highest , coldest region of troposphere 5 12 km (16,500 40,000 ft) in temperate latitudes. @ altitude water freezes high clouds composed of ice crystals or supercooled water droplets.


genus cirrus

cirrus uncinus clouds (v-2)



cirrus spissatus (v-3) clouds



cirrus fibratus radiatus (v-8)


abbreviation: ci


cirriform clouds tend wispy , transparent or translucent. isolated cirrus not bring rain; however, large amounts of cirrus can indicate approaching storm system followed fair weather.


there several variations of clouds of cirrus genus based on species , varieties:


species

cirrus fibratus (v-1)

high clouds having traditional mare s tail appearance. these clouds long, fibrous, , curved, no tufts or curls @ ends.
cirrus uncinus (v-2)

filaments up-turned hooks or curls.
cirrus spissatus (v-3)

dense , opaque or opaque patches.
cirrus castellanus (v-4)

a series of dense lumps, or towers , connected thinner base.
cirrus floccus (v-5)

elements take on rounded appearance on top, lower part appearing ragged.




opacity-based varieties

none; translucent except species spissatus inherently opaque.








fibratus pattern-based varieties

cirrus fibratus intortus (v-6)

irregularly curved or tangled filamegnts.
cirrus fibratus vertebratus (v-7)

elements arranged in manner of vertebrate or fish skeleton.








pattern-based variety radiatus

large horizontal bands appear converge @ horizon; associated fibratus , uncinus species.

cirrus fibratus radiatus (v-8)
cirrus uncinus radiatus (v-9)








pattern-based variety duplicatus

sheets @ different layers of upper troposphere, may connected @ 1 or more points; associated fibratus , uncinus species.

cirrus fibratus duplicatus (v-10)
cirrus uncinus duplicatus (v-11)










varieties not commonly associated ci species spissatus, castellanus, or floccus.












precipitation-based supplementary features

not associated cirrus.
















cloud-based supplementary feature

mamma

bubble-like downward protuberances; seen species castellanus.
















genitus mother clouds

cirrus cirrocumulogenitus
cirrus altocumulogenitus
cirrus cumulonimbogenitus
cirrus homogenitus. cirrus formed spreading of aircraft contrails.
















mutatus mother cloud

cirrus cirrostratomutatus









genus cirrocumulus

a large field of cirrocumulus stratiformis (v-12)


abbreviation: cc.


high-level stratocumuliform clouds of genus cirrocumulus form when moist air @ high tropospheric altitude reaches saturation, creating ice crystals or supercooled water droplets. limited convective instability @ cloud level gives cloud rolled or rippled appearance. despite lack of strato- prefix, layered cirrocumulus physically high stratocumuliform genus.


high stratocumuliform species

cirrocumulus stratiformis (v-12)

sheets or relatively flat patches of cirrocumulus.
cirrocumulus lenticularis (v-13)

lenticular, or lens-shaped high cloud.
cirrocumulus castellanus (v-14)

cirrocumulus layer towers , or turrets joined @ bases.
cirrocumulus floccus (v-15)

very small white heaps ragged bases , rounded tops.




opacity-based varieties

none (always translucent)


stratocumuliform pattern-based variety undulatus

cirrocumulus undulating base; associated stratiformis , lenticularis species. (v-16)

cirrocumulus stratiformis undulatus (v-17)
cirrocumulus lenticularis undulatus (v-18)








pattern-based variety lacunosus

cirrocumulus large clear holes; associated stratiformis , castellanus species (also cumuliform floccus species).
stratocumuliform lacunosus

cirrocumulus stratiformis lacunosus (v-19)
cirrocumulus castellanus lacunosus (v-20)
cirrocumulus floccus lacunosus (v-21)












precipitation-based supplementary feature

virga

light precipitation evaporates above ground level; seen species stratiformis, castellanus, , floccus.
















cloud-based supplementary feature

mamma

bubble-like downward protuberances; seen species castellanus.
















genitus mother clouds

cirrocumulus homogenitus. cirrocumulus formed spreading of aircraft contrails.
















mutatus mother clouds

cirrocumulus cirromutatus
cirrocumulus cirrostratomutatus
cirrocumulus altocumulomutatus









genus cirrostratus

cirrostratus nebulosus (v-22) merging darker altostratus translucidus (v-47)


abbreviation: cs


clouds of genus cirrostratus consist of continuous, wide sheets of cloud covers large area of sky. formed when convectively stable moist air cools saturation @ high altitude, forming ice crystals. frontal cirrostratus precursor rain or snow if thickens mid-level altostratus , nimbostratus weather front moves closer observer.


species

cirrostratus fibratus (v-22)

cirrostratus sheet fibrous appearance, not detached cirrus.
cirrostratus nebulosus (v-23)

featureless, uniform sheet.




opacity-based varieties

none (always translucent)








fibratus pattern-based varieties

cirrostratus fibratus duplicatus (v-24)

separate or semi-merged sheets 1 layer above other.
cirrostratus fibratus undulatus (v-25)

undulating waves.








varieties not commonly associated cs species nebulosus.










supplementary features/accessory clouds

not associated cirrostratus.
















genitus mother clouds
















cirrostratus cirrocumulogenitus
cirrostratus cumulonimbogenitus
cirrostratus homogenitus. cirrostratus formed spreading of aircraft contrails.
















mutatus mother clouds

cirrostratus cirromutatus
cirrostratus cirrocumulomutatus
cirrostratus altostratomutatus.












^ clouds online (2012). cloud atlas . retrieved 1 february 2012. 
^ jetstream (5 january 2010). cloud classifications . national weather service. retrieved 31 january 2011. 
^ boyd, sylke (2008). clouds – species , varieties . university of minnesota. archived original on december 30, 2010. retrieved 4 february 2012. 
^ aerographer/meteorology (2012). cloud variety . meteorologytraining.tpub.com. archived original on 21 december 2012. retrieved 2 july 2012. 
^ world meteorological organization, ed. (1975). features, international cloud atlas (pdf). i. pp. 22–24. isbn 92-63-10407-7. retrieved 26 august 2014. 
^ burroughs, william james; crowder, bob (january 2007). weather, p.216. fog city press, san francisco. isbn 978-1-74089-579-8.
^ world meteorological organization, ed. (1975). species, international cloud atlas (pdf). i. pp. 17–20. isbn 92-63-10407-7. retrieved 26 august 2014. 
^ burroughs, william james; crowder, bob (january 2007). weather, p.215. fog city press, san francisco. isbn 978-1-74089-579-8.






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