| Section C | C index | 511-519 of 1157 terms |
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cloud-height measurement method—Method that allows the height of a cloud base or top to be determined. See ceilometer.
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cloud height—1. In weather observations, the height of the cloud base above local terrain. Compare ceiling. 2. (Rare.) The height of the cloud top above local terrain or above mean sea level. 3. (Rare.) The vertical distance from the cloud base to the cloud top; more commonly referred to as the “thickness” or “depth” of the cloud.
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cloud image animation—The automatic sequential display of a series of images containing cloud information. The number of images and the interimage delay are parameters that define the smoothness of the motion resulting from the animation as well as its total duration.
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cloud layer—An array of clouds, not necessarily all of the same type, with bases at approximately the same level. It may be either continuous or composed of detached elements.
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cloud level—1. A layer in the atmosphere in which are found certain cloud genera. Three such levels are usually defined: high, middle, and low. See cloud classification. 2. At a particular time, the layer in the atmosphere bounded by the limits of the bases and tops of an existing cloud form.
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cloud line—A narrow cloud band in which individual elements are connected and the line is less than one degree of latitude in width.
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cloud microstructure—Structure of small-scale cloud features (cells, billows, wisps, etc.) resulting from the distribution of cloud particles on a scale larger than the particles themselves but smaller than the scale of the visual cloud. Such features may result from local motions, organized or turbulent, and be preferred sites for the development of cloud hydrometeors.
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cloud model—A physical or numerical framework for the prediction of cloud behavior. A physical model might be the behavior of a lighter or denser fluid blob (thermal) when released into a large environment. A theoretical model begins with the equations of fluid flow and derives solutions in terms of the growth of particles in a prescribed mixing environment.
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