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Definition of the noun altocumulus
What does altocumulus mean as a name of something?
noun - plural: altocumuli / altocumulus (rare form)
- a cumulus cloud at an intermediate altitude of 2 or 3 miles
Alternative definition of the noun altocumulus
- [physics, meteorology] A principal medium-level cloud type, white and/or gray in color, which occurs as a layer or patch with a waved aspect, the elements of which appear as laminae, rounded masses, or rolls. These elements usually are sharply outlined, but they may become partly fibrous or diffuse; they may or may not be merged; they generally have shadowed parts; and, by convection, when observed at an angle of more than 30° above the horizon, subtend an angle between 1 degrees and 5 degrees. (Abbreviated 'A'c.)
Altocumulus is a middle-altitude cloud genus that belongs to the stratocumuliform physical category characterized by globular masses or rolls in layers or patches, the individual elements being larger and darker than those of cirrocumulus and smaller than those of stratocumulus. Like other cumuliform and stratocumuliform clouds, altocumulus signifies convection. It is usually white or grey, and often occurs in sheets or patches with wavy, rounded masses or rolls. A sheet of partially conjoined altocumulus perlucidus is sometimes found preceding a weakening warm front, where the altostratus is starting to fragment, resulting in patches of altocumulus perlucidus between the areas of altostratus. Altocumulus is also commonly found between the warm and cold fronts in a depression, although this is often hidden by lower clouds. Towering altocumulus, known as altocumulus castellanus, frequently signals the development of thunderstorms later in the day, as it shows instability and convection in the middle levels of the troposphere, the area where towering cumulus clouds can turn into cumulonimbus.
- also known as Altocumulus cloud
Printed dictionaries and other books with definitions for Altocumulus
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by National Geographic Society (U.S.), John M. Fahey
Stratocumulus is a layered cumulus cloudaboutamia above thagound Altocumulus is a similar cloud at an alttude of two miles isgaatarsistanza from the groundmäkosthetumulus offs appearsmaller than those of stratocumulusciouds.
Understanding Weather (2014)
by Karel Karel Hughes, Julian Mayes
Altocumulus is a beautiful cloud that has been aptly described as resembling cumulus ripples where cumulus-like ...
by K. Bharatdwaj
Altocumulus (Ac): Altocumulus is a greyish sheet cloud much denser than cirrostratus, but through which it is still possible to see the sun. It occurs in patch, sheet or layer. In general, it consists of mass of small, relatively thin, globular patches, ...
ABC's of Versability (2015)
by Roger J. Maderia
An altocumulus is a cloud of white or gray. It's patchy with a puffy round outline. An apparition is a cloudy appearance. Quite often it seems like a ghostly sign. An anomaly does deviate from a norm. Ablution is the washing of one's hands.
Meteorology For Pilots (2014)
by Mike Wickson
AC – ALTOCUMULUS is a stability cloud ...
by Allan Beaver
Altocumulus is a frequently occurring 99 type.
Photo-era Magazine (1918)
by Juan C. Abel, Thomas Harrison Cummings, Wilfred A. French, A. H. Beardsley
Altocumulus is a high floating-type, consisting of numerous rounded masses constituting a compact group, which is frequently great enough to cover a considerable portion of the sky. - In this form, it is often noticeable toward sunset on quiet ...
Photo-Era 1918 (1918)
Altocumulus is a high floating-type, consisting of numerous rounded masses constituting a compact group, which is frequently great enough to cover a considerable portion of the sky. In this form, it is often noticeable toward sunset on quiet ...
by Douglas M. Considine, Glenn D. Considine
Altocumulus is a middle-altitude water or mixed cloud, whose rounded masses or rolls are usually sharply outlined. It generally has shadowed parts, varying in color from pure white to nearly black. “Mackerel sky” is an appropriate description ...
Dictionary of Earth Sciences (1976)
by S.E. Stiegeler
altocumulus (Ac), stratus (St), stratocumulus (Sc), cumulus (Cu), cumulonimbus ...
by Jacqueline Smith
applied to altocumulus and stratocumulus clouds; nebulosus – exhibiting a nebulous veil with no distinct details, usually cirrostratus or altostratus; lenticularis – lens-shaped, with sharp margins (most commonly applied to altocumulus cloud ...
by Jeffrey Wayne Vincoli
altocumulus A middle cloud, usually white or gray. Often occurs in layers or patches with wavy, rounded masses or rolls. altocumulus castellanus An ...
by C. Reid Nichols, Robert G. Williams
Altocumulus clouds are the cumulus cloud masses organized in rows; the cloud elements may or may not be merged into one mass. Nimbostratus clouds are gray sheets of cloud from which rain is falling (the meaning of the prefix nimbo).
Illustrated Dictionary and Resource Directory of Environmental and Occupational Health, Second Edition (2016)
by Herman Koren
altocumulus clouds (Ac) — Patches or layers of puffy, ...
A Dictionary of Weather (2008)
by Storm Dunlop
altocumulus (Ac) One of the main *cloud genera: a middlelevel cloud (see ÉTAGE) that occurs as a layer or patch of more or less ...
Encyclopedia of Geography (2010)
by Barney Warf
altocumulus (Ac), altostratus (As), nimbostratus (Ns), cumulus (Cu), stratocumulus (Sc), stratus (St), and cumulonimbus (Cb). Additional classifications include species, ...
by Editorial Board
altocumulus. A dappled layer of patch or cloud composed of flattened globules that may be arranged in ...
by Rodney Dale, Steve Puttick
Cloud classification Ac altocumulus Cu cumulus Acc altocumulus castellatus Fc fractocumulus As altostratus Fn fractonimbus Cb cumulonimbus Fs fractostratus Cc cirrocumulus Nb nimbus ...
A Dictionary of Geography (2015)
by Susan Mayhew
altocumulus, Ac—shallow cloud sheet broken into roughly regular, rounded clouds; altostratus, As— featureless, thin, translucent cloud sheet; nimbus, Ns—extensive, very dark cloud sheet, ...
by Timothy M. Kusky, Katherine E. Cullen
Altocumulus clouds are gray, puffy masses that often roll out in waves, Cirrus clouds over coast range at Purisima Creek Redwoods, Bay Area, California ( NOAA/Department of Commerce) with some parts appearing darker than others.
Stratocumulus Altocumulus airmaSSeS and frontS Huge bodies of air, called air Warm,moistair WeatHer foreCaSting Warm front long spells of masses, form over land and sea. air masses containing mass the weather centers in different ...
Altocumulus clouds look like small, puffy gray or white rolls placed in rows side by side. They are not usually a sign of precipitation unless they are found together with altostratus clouds. Stratus Stratus clouds are low-hanging, ...
Dictionary of Physics (2016)
by Palgrave Macmillan Ltd
Altocumulus clouds often herald Bothunderstorms. (B-clouds) altostratus, medium-height stratus cloud, As, a mixed cloud occurring at the intermediate level of the D-troposphere, usually in the form of a nonstructured or lightly striped, ...
by David S. G. Thomas
altocumulus See CLOUDS. altostratus See CLOUDS. alveolar Alveolar or honeycomb weathering features take the form of small hollows in rock surfaces that may occur as individual features but more commonly are ...
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Seen from West Ridgecrest near Mount Tamalpais.
Photo credit: albategnius
Photo credit: Keng Susumpow
Photo credit: Fabienne D.
Photo credit: Gabriele Diwald
A beautiful pattern of altocumulus clouds
Photo credit: Bernt Rostad
Photo credit: raymondklaassen
A nice dislpay of Altocumulus
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Video shows what altocumulus means. A principal medium-level cloud type, white and/or gray in color, which occurs as a layer or patch with a waved aspect, the ...
Scrabble value of A1L1T1O1C3U1M3U1L1U1S1
The value of this 11-letter word is 15 points, but it's not an accepted word in the Official Scrabble Players Dictionary.
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