Cirrocumulus lacunosus

Cirrocumulus lacunosus also known as Cirrocumulus lacunar or Cirrocumulus lacunaris [2] is a type of cirrocumulus cloud. The term lacunosus is from Latin, meaning "full of hollows".[3] Cirrocumulus lacunosus is a relatively rare cloud form that occurs as a layer of cloud with circular holes in it. Formation is commonly attributed to a cool layer mixing with a warmer, higher layer of the atmosphere.[4][5] These holes normally have frayed edges, and they are often arranged in a manner that resembles a net or a honeycomb.[6]

Cirrocumulus lacunosus
Cirrocumulus stratiformis lacunosus cloud
AbbreviationCc la
Symbol
GenusCirro- (curl)
-cumulus (heaped)
Varietylacunosus (full of gaps)
AltitudeAbove 6,000 m
(Above 20,000 ft)
AppearancePerforated with round, frayed holes[1]
PrecipitationVirga only
Cirrocumulus lacunosus

This term applies mainly to Cirrocumulus and Altocumulus; it may also apply, though very rarely, to Stratocumulus.[7]

See also

References
  1. Wolken-Online. "Cirrocumulus". Cloud Atlas. Retrieved 21 July 2011.
  2. "Appendix 3 - History of cloud nomenclature".
  3. Numen - The Latin Lexicon. "Definition of stratus". Retrieved 21 July 2011.
  4. "Cirrocumulus Lacunosus Cloud - EPOD - a service of USRA".
  5. Dunlop, Storm (2003). The weather identification handbook (1st Lyons Press ed.). Guilford, Conn.: Lyons Press. p. 67. ISBN 1-58574-857-9.
  6. Callanan, Martin. "Cirrocumulus lacunosus". International Cloud Atlas. nephology.eu. Retrieved 21 July 2011.
  7. "Lacunosus". World Metereological Organization. wmo.int. Retrieved 1 April 2023. Definitions of clouds > Varieties > Lacunosus


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