Clouds

alt=|thumb|upright=1.5|Cloudscape over Borneo, taken by the [[International Space Station]]

fraction of the sky obscured by clouds when observed from a particular location

thumb|upright=1.35|Cloudburst in Iceland

large gap in cirrocumulus or altocumulus clouds

fluid instability that occurs when there is velocity shear in a single continuous fluid or a velocity difference across the interface between two fluids

cloud atlas

meteorological concept

thumb|right|upright=1.2|A completely overcast sky in Mehamn, Norway.

regularly recurring thundercloud in Australia

description of layer of clouds as viewed from above, resembling waves

cloud species

society aiming to foster understanding and appreciation of clouds

height measured with respect to the underlying ground surface

Thickness of a cloud

photography genre

thumb|Scale of cloud cover measured in oktas (eighths) with the meteorological symbol for each okta

fraction of incoming sunlight reflected by clouds

hhighest altitude of the visible portion of a cloud

cloud species

cloud species