Cirrus castellanus cloud

{{Short description|Type of cloud}}

{{Infobox Cloud

|name=Cirrus castellanus

|image location=Cirrus castellanus.jpg

|image name=

|abbreviation=Ci cas

|symbol=Clouds H1.svg

|genus=Cirrus (curl)

|species=castellanus (castle)

|variety=

|altitude_m=Above 6,000

|altitude_ft=Above 20,000

| level = high

|appearance=A series of dense lumps, or "towers" of cirrus, connected by a thinner base.

|precipitation=No}}

Cirrus castellanus or Cirrus castellatus{{Cite web|url=https://cloudatlas.wmo.int/en/appendix-3-history-of-cloud-nomenclature.html#cirrus|title = Appendix 3 - History of cloud nomenclature}} is a species of cirrus cloud. Its name comes from the word castellanus, which means of a fort, of a castle in Latin.{{cite web |title=Definition of castellanus |url=http://latinlexicon.org/definition.php?p1=1002184 |accessdate=11 September 2011 |author=Numen - The Latin Lexicon}} Like all cirrus, this species occurs at high altitudes. It appears as separate turrets rising from a lower-level cloud base. Often these cloud turrets form in lines, and they can be taller than they are wide.{{cite book |last=Dunlop |first=Storm |title=The weather identification handbook |year=2003 |publisher=Lyons Press |location=Guilford, Conn. |isbn=1-58574-857-9 |pages=57 |url=https://books.google.com/books?id=BR2ft4G5TgQC&q=cirrus+castellanus&pg=PA56 |edition=1st Lyons Press |accessdate=11 September 2011 }}{{Dead link|date=December 2023 |bot=InternetArchiveBot |fix-attempted=yes }} This cloud species is usually dense in formation.{{cite web |last=Callanan |first=Martin |title=Cirrus castellanus |url=http://nephology.eu/cirrus/cirrus-castellanus |work=International Cloud Atlas |publisher=nephology.eu |accessdate=11 September 2011 |archive-date=21 January 2016 |archive-url=https://web.archive.org/web/20160121184221/http://nephology.eu/cirrus/cirrus-castellanus |url-status=dead }}