Calvus

The title of this article is ambiguous. Further meanings are listed under Calvus (disambiguation) .

Clouds : classification
Genera Cirrus Ci Cirrocumulus Cc Cirrostratus Cs Altocumulus Ac Altostratus As Stratocumulus Sc Stratus St. Cumulus Cu Nimbostratus Ns Cumulonimbus Cb	species calvus cal capillatus cap castellanus cas congestus con fibratus fib floccus flo fractus fra humilis hum lenticularis len mediocris med nebulosus neb spissatus spi stratiformis st uncinus unc volutus vol	Subspecies duplicatus you intortus in lacunosus la opacus op perlucidus pe radiatus ra translucidus tr undulatus un vertebratus ve Special forms arcus arc asperitas asp cauda cau cavum cav fluctus flu flumen flm incus inc mamma mam murus mur pannus pan pileus pil praecipitatio pra tuba tub velum vel virga vir

Calvus (cal) ( Latin for "bald, hairless, bald") describes a cumulonimbus cloud without an anvil. The upper parts of the cloud do not look clearly fibrous anywhere, but the upper side no longer has the cauliflower shape of the cumulus and no sharp outlines.

The Cumulonimbus calvus is the transition form from Cumulus congestus , which has sharp outlines everywhere, to Cumulonimbus capillatus , the Cumulonimbus with anvil, i.e. clearly fibrous upper part. With him at least some of the swellings of the upper section begin to lose their cumulus- shaped outlines; however, no cirrus-like parts can be seen yet . The swellings and parts growing out usually form a whitish mass with approximately vertical stripes.

Web links

Karlsruhe Cloud Atlas:

• Cumulonimbus calvus