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Indicates that the air below the cloud is dry; can also signify the downdraft region of a storm. Wall clouds. A supercell forms and a wall cloud pushes north of Beardstown, Ill. Friday, March 31 ...
Emma Stibbon was born on 1 March 1962 in Münster, Germany.Her father was General Sir John James Stibbon, KCB, OBE (5 January 1935 – 9 February 2014) one of the highest-ranking officers in the British Army, who served as Assistant Chief of the Defence Staff and then as Master-General of the Ordnance from 1987–91.
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.
In rising, its temperature decreases by adiabatic expansion, and when the relative humidity of water vapor reaches saturation, this forms a convective cloud. [1] To form a storm, this layer must be very large and the temperature at the top of the cloud must be below −20C. Mountains can help trigger atmospheric convection in three ways: [2]
As the updraft rotates and ingests cooler, moister air from the forward flank downdraft (FFD), it may form a wall cloud, a spinning layer of clouds lowered from ambient storm cloud base under the mid-level mesocyclone. The wall cloud tends to form closer to the center of the mesocyclone. As it descends, a funnel cloud may form
A cumulonimbus incus is a mature thunderstorm cloud generating many dangerous elements. Lightning: this storm cloud is capable of producing bursts of cloud-to-ground lightning. Hail: hailstones may fall from this cloud if it is a highly unstable environment (which favours a more vigorous storm updraft).
A cloudscape painting by Jacob Isaakszoon van Ruisdael. In art, a cloudscape is the depiction of a view of clouds or the sky.Usually, as in the examples seen here, the clouds are depicted as viewed from the earth, often including just enough of a landscape to suggest scale, orientation, weather conditions, and distance (through the application of the technique of aerial perspective).
A shelf cloud is a low, horizontal, wedge-shaped arcus cloud attached to the base of the parent cloud, which is usually a thunderstorm cumulonimbus, but could form on any type of convective clouds. Rising air motion can often be seen in the leading (outer) part of the shelf cloud, while the underside can often appear as turbulent and wind-torn.
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