Moderate vertical cumulus is the product of free convective airmass instability. Clear slot or dry slot (informal term) – an evaporation of clouds as a. When it comes to clouds, there are 4 different types to be aware of. This is called contrail. But you know what they say, "Practice makes perfect". Before getting into the types of clouds, it’s worth taking some time to explain what a cloud actually is. The division of genus types into species is as shown in the following table. Always be notified when a new article is released and stay updated with the latest news and updates. The table that follows is very broad in scope and draws from several methods of classification, both formal and informal, used in different levels of the homosphere by a number of authorities. Noctilucent clouds are thin clouds that come in a variety of forms based from about 80 to 85 kilometres (262,000–279,000 ft) and occasionally seen in deep twilight after sunset and before sunrise. Not all multi-level clouds develop to this extent though and can be completely benign, as our first example will illustrate. Homogenitus (homo-/pertaining to humans) – formed as a result of human activities, particularly aircraft at high altitudes and heat-generating industrial activities at surface level. There are much, much more but these are the four basic types of clouds. Cumulonimbus pileus (WMO genus and accessory cloud) – capped, hood-shaped cloud above a cumulonimbus cloud. These are fair weather cumuliform clouds of limited convection that do not grow vertically. The aim of this article is to make it as easy as possible for you to learn to distinguish the different types of clouds from each. Cumulus homogenitus clouds formed by air-mass convection associated with contained industrial activity. Volutus (Vol) – "Rolled": Elongated, low or mid-level, tube shaped, stratocumuliform (Sc vol, Ac vol). Anvil (WMO supplementary feature incus) – the anvil top of a cumulonimbus cloud. Cavum – "Hole": Supercooled altocumulus or cirrocumulus distinguished by a hole with ragged edges and virga or wisps of cirrus. They develop from cumulus when the airmass is convectively highly unstable. 2 kilometres (6,600 ft) and are generally composed of water droplets.[5]. Despite the lack of a strato- prefix, layered cirrocumulus is physically a high stratocumuliform genus.[9]. 1.1k plays . Above the troposphere, stratospheric and mesospheric clouds have their own classifications with common names for the major types and alpha-numeric nomenclature for the subtypes. They are, however, sometimes seen as early indicators of stormy weather to follow later. We will then proceed to examine each cloud system with their unique characteristics and features. Mediocris (Med) – "Medium-size": Cumuliform (Cu med) with moderate vertical extent; indicates moderate instability and upcurrents. Upon contact with ice crystals or any other object like dust or pollen, however, they immediately freeze into crystal form.). Facts About The Exosphere: The Outermost Layer Of The Atmosphere, What Is A Sundog – Defining A Parhelion And How It Occurs, What Causes Humidity? Not commonly seen with cumulus fractus or humilis. Limited convective instability at the cloud level gives the cloud a rolled or rippled appearance. They are one of the rarer types of clouds and usually don’t last long. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Scientists further classify these three cloud types into four distinct subcategories: high, middle and low clouds, based on the altitude of the cloud formation in the atmosphere, and clouds that start low but climb vertically high in the sky. Know more about the cloud names and their classification. Includes why are clouds white, why do clouds float and info on 16 types of clouds! There are much, much more but these are the four basic types of clouds. Murus: – "Wall": Cumulonimbus wall cloud with a lowering rotating base that can portend tornadoes. [19], Wave clouds with clear gaps through which lower stratiform layers may be seen.[20]. 404 plays . The foundation consists of 10 major cloud types. harvnb error: no target: CITEREFDoughertyEsposito2009 (, Altocumulus stratiformis translucidus undulatus, International Civil Aviation Organization, "Nacreous and polar stratospheric clouds", "Automated CB and TCU detection using radar and satellite data: from research to application", "Cataractagenitus International Cloud Atlas Section 2.1.3.6.5", http://cimss.ssec.wisc.edu/goes/blog/archives/555, "Mysterious waves seen in Venus's clouds", National Aeronautics and Space Administration, "NASA SP-441: Viking Orbiter Views of Mars", "Neptune's Atmosphere: Composition, Climate, & Weather", http://nephology.eu International Cloud Atlas online, Introduction to Clouds (National Weather Service), Ten Basic Cloud Types (National Weather Service), Nitric acid and water polar stratospheric clouds, https://en.wikipedia.org/w/index.php?title=List_of_cloud_types&oldid=988317222, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License. 8.0k plays . In section seven, extraterrestrial clouds can be found in the atmospheres of other planets in our solar system and beyond. Altocumulus clouds are a very common sight across the world. Cumulus radiatus (WMO genus and variety) – cumulus arranged in parallel lines that appear to converge near the horizon. Due to the height of these clouds, they don't produce precipitation of any kind on their own. Such a cloud would be known as fog, ice fog, or mist.The types of clouds can be divided into three levels, each in turn with its own ma… Cumulus clouds that do not get very tall are indicators of fair weather. Rope – (slang) narrow, sometimes twisted funnel type cloud seen after a tornado dissipates. Stratogenitus – partial transformation of stratus. Clouds of the genus nimbostratus tend to bring constant precipitation and low visibility. Starting at a low level and building up in height, the clouds are usually loaded with moisture and associated with long periods of persistent rain or snowfall. The genus types and some sub-types associated with each variety are sorted in the left column from top to bottom in approximate descending order of average overall altitude range. You should now be able to start telling the major cloud systems apart. The cumulus genus includes four species as defined by vertical size and structure. Cirrostratogenitus – partial transformation of cirrostratus. Nimbostratus clouds typically cover the entire sky. Fun hands-on worksheets for Preschoolers to learn the four types of clouds. Precipitation-based supplementary features. (Virga is rain or snow that starts falling, but evaporates before it can reach the ground). Nebulosus (Neb) – "Nebulous": Indistinct low and high stratiform (St neb, Cs neb) without features; indicates light wind if any and stable air mass. Different types of clouds form along warm fronts and cold fronts, and a field forecaster should be able to tell what weather is coming by reading the cloud shapes and height. Four worksheets in total. Weather . On the cross-classification table, forms and genus types (including some genus sub-types) are shown from left to right in approximate ascending order of instability. The supplementary features are associated with particular genera as follows. Each box is marked where a particular genus or sub-type has a particular genitus or mutatus mother cloud. They are mostly featureless with a grayish color. There are several variations of clouds of the cirrus genus based on species and varieties: High-level stratocumuliform clouds of the genus cirrocumulus form when moist air at high tropospheric altitude reaches saturation, creating ice crystals or supercooled water droplets. 5 - 13 km (16,000 - 43,000 ft) Noctilucent clouds are the highest clouds in the sky, however they are not associated with weather like the rest of the clouds in this table. Collar cloud (WMO velum accessory cloud) – ring shape surrounding upper part of wall cloud. Cumulonimbus pannus (WMO genus and accessory cloud) – shredded sections attached to main Cb cloud. To be honest, it can even be confusing for some seasoned weather enthusiasts. Cumulus clouds appear during sunny days early in the day and disappear towards the evening. Genitus and mutatus types are the same as for cumulus of little vertical extent. None (always opaque except species fractus which is always translucent). 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