| Cirrus duplicatus |
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| Abbreviation | Ci du |
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| Symbol |  |
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| Genus | Cirrus (curl) |
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| Variety | duplicatus (double) |
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| Altitude | Above 5,000 m
(Above 16,500 ft) |
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| Appearance | two or more overlapping layers[1] |
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| Precipitation cloud? | No |
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Cirrus duplicatus is a variety of cirrus cloud. The name cirrus duplicatus is derived from Latin, meaning "double".[2] The duplicatus variety of cirrus clouds occurs when there are at least two layers of cirrus clouds. Most of the time, occurrences of cirrus fibratus and cirrus uncinus are in the duplicatus form.[3] Like stratus clouds, cirrus clouds are often seen in the duplicatus form.[4]
See also
References
- ↑ Wolken Online. "Cirrus". Cloud Atlas. http://www.clouds-online.com/cloud_atlas/cirrus/cirrus.htm. Retrieved 13 July 2011.
- ↑ Latin Lookup. "duplicatus". http://latinlookup.com/word/18551/duplicatus. Retrieved 13 July 2011.
- ↑ Callanan, Martin. "Cirrus duplicatus". International Cloud Atlas. nephology.eu. http://nephology.eu/cirrus/cirrus-duplicatus. Retrieved 13 July 2011.
- ↑ Dunlop, Storm (2003). The weather identification handbook (1st Lyons Press ed.). Guilford, Conn.: Lyons Press. p. 58. ISBN 1-58574-857-9. https://books.google.com/books?id=KoZMvgAACAAJ.
External links
- International Cloud Atlas – Cirrus duplicatus
[[Earth:ClCloud List of cloud types|genera]] and selected species, supplementary features, and other airborne hydrometeors - WMO Latin terminology except where indicated |
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| Mesospheric | Extreme-level
80-85 km | Noctilucent (NLC)
polar mesospheric clouds |
- Noctilucent
- Polar mesospheric clouds
|
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|
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|
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| Stratospheric | Very High-level
15-30 km | | Nacreous clouds | |
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Nitric acid and water
polar stratospheric clouds (PSC) |
- Nitric acid and water polar stratospheric clouds
|
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|
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|
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| Tropospheric | High-level
3-18 km | | Cirrus (Ci) | | Species |
- Cirrus castellanus (Ci cas)
- Cirrus fibratus (Ci fib)
- Cirrus floccus (Ci flo)
- Cirrus spissatus (Ci spa)
- Cirrus uncinus (Ci unc)
|
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| Ci only varieties |
- Cirrus intortus (Ci in)
- Cirrus vertebratus (Ci ve)
|
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|
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| Cirrocumulus (Cc) | | Species |
- Cirrocumulus castellanus (Cc cas)
- Cirrocumulus floccus (Cc flo)
- Cirrocumulus lenticularis (Cc len)
- Cirrocumulus stratiformis (Cc str)
|
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|
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| Cirrostratus (Cs) | | Species |
- Cirrostratus fibratus (Cs fib)
- Cirrostratus nebulosus (Cs neb)
|
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|
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High-level only
accessory and other |
- (Homomutatus (homut) Contrail)
|
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|
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Medium-level
2-8 km | | Altocumulus (Ac) | | Species |
- Altocumulus castellanus (Ac cas)
- Altocumulus floccus (Ac flo)
- Altocumulus lenticularis (Ac len)
- Altocumulus stratiformis (Ac str)
- Altocumulus volutus (Ac vol)
|
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|
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| Altostratus (As) | |
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| Nimbostratus (Ns) | |
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|
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Low-level
0-2 km | | Cumulonimbus (Cb) | | Species |
- Cumulonimbus calvus (Cb cal)
- Cumulonimbus capillatus (Cb cap)
|
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| Cb Only Supplementary features |
- Cumulonimbus cauda ((cau) Tail cloud)
- Cumulonimbus incus (inc)
- Cumulonimbus murus ((mur) Wall cloud)
|
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| Cb only Accessories & Other |
- Cumulonimbus flumen ((Cb flu) Beaver tail)
- Overshooting top
- Hot tower
|
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|
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| Cumulus (Cu) | | Species |
- Fractus
- Cumulus humilis (Cu hum)
- Cumulus mediocris (Cu med)
- Cumulus congestus (Cu con) (ICAO term Towering cumulus [Tcu])
|
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| Other | |
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|
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| Stratus (St) | | Species |
- Stratus fractus (St fra)
- Stratus nebulosus (St neb)
|
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| St only Accessories & Other |
- Stratus silvagenitus (St sil)
- Fog
|
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|
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| Stratocumulus (Sc) | | Species |
- Stratocumulus castellanus (Sc cas)
- Stratocumulus floccus (Sc flo)
- Stratocumulus lenticularis (Sc len)
- Stratocumulus stratiformis (Sc str)
- Stratocumulus volutus (Sc vol)
|
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|
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Low-level only
supplementary features |
- Arcus ((arc) Shelf)
- Tuba ((tub) Funnel cloud)
|
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Low-level only
accessory and other |
- Pileus (pil)
- Velum (vel)
- Flammagenitus (flgen)
- Cataractagenitus (cagen)
|
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|
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Non-height
specific | | Varieties |
- Duplicatus (du)
- Lacunosus (la)
- Opacus (op)
- Perlucidus (pe)
- Radiatus (ra)
- Translucidus (tr)
- Undulatus (un)
|
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| Supplementary features |
- Asperitas (asp)
- Cavum (cav)
- Fluctus (flu)
- Mamma (mam)
- Praecipitatio (pra)
- Virga (vir)
|
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| accessory and other |
- Accessory cloud
- Pannus (pan)
- Homogenitus (hogen)
- Actinoform cloud
|
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|
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 | Original source: https://en.wikipedia.org/wiki/Cirrus duplicatus. Read more |
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