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Cumulus arcus clouds have a gust front, [26] and cumulus tuba clouds have funnel clouds or tornadoes. [27] Cumulus pileus clouds refer to cumulus clouds that have grown so rapidly as to force the formation of pileus over the top of the cloud. [28] Cumulus velum clouds have an ice crystal veil over the growing top of the cloud. [19]
A typical cumulus cloud has a scale of less than 1 kilometre (0.62 mi), and would require a grid even finer than this to be represented physically by the equations of fluid motion. Therefore, the processes that such clouds represent are parameterized, by processes of various sophistication. In the earliest models, if a column of air in a model ...
Cumulus pileus (WMO genus and accessory cloud) – capped, hood-shaped cumulus cloud. Cumulus praecipitatio (WMO genus and supplementary feature) – cumulus whose precipitation reaches the ground. Cumulus radiatus (WMO genus and variety) – cumulus arranged in parallel lines that appear to converge near the horizon. Cumulus radiatus clouds ...
Download as PDF; Printable version; In other projects ... In other projects Wikimedia Commons; ... This category is mainly focused on clouds of the cumulus genus and ...
A group of accessory clouds comprise formations that are associated mainly with upward-growing cumuliform and cumulonimbiform clouds of free convection. Pileus is a cap cloud that can form over a cumulonimbus or large cumulus cloud, [99] whereas a velum feature is a thin horizontal sheet that sometimes forms like an apron around the middle or ...
Turkey tower is a slang term for a narrow, tall, individual towering cloud from a small cumulus cloud which develops and suddenly falls apart. [7] Sudden development of turkey towers could signify the breaking or weakening of a capping inversion , [ 8 ] and an area where these consistently form is an "agitated area", a term that applies to ...
Clouds form when the dew point temperature of water is reached in the presence of condensation nuclei in the troposphere. The atmosphere is a dynamic system, and the local conditions of turbulence, uplift, and other parameters give rise to many types of clouds. Various types of cloud occur frequently enough to have been categorized.
Cumulus clouds have a significant impact on transport of energy and water vapor, and then influence precipitation and climate. In large scale models, cumulus clouds need to be parameterized. Entrainment rate is a key parameter in cumulus parameterization. Henry Stommel was the first to study entrainment rate in cumulus clouds. [4]