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Asperitas (formerly known as Undulatus asperatus) is a cloud formation first popularized and proposed as a type of cloud in 2009 by Gavin Pretor-Pinney of the Cloud Appreciation Society. Added to the International Cloud Atlas as a supplementary feature in March 2017, it is the first cloud formation added since cirrus intortus in 1951. [ 2 ]
Clouds of the genus nimbostratus tend to bring constant precipitation and low visibility. This cloud type normally forms above 2 kilometres (6,600 ft) [10] from altostratus cloud but tends to thicken into the lower levels during the occurrence of precipitation. The top of a nimbostratus deck is usually in the middle level of the troposphere.
Mammatus clouds filled the sky over Bucks County on Sunday night, June 30, 2024, giving a treat of orange and pink fluffy clouds and filling social media with the spectacular sky.
Individual tufts of clouds with ragged bases and often with noticeable virga: Ac, Cc, Ci Fractus: fra: Broken cloud with ragged bases and edges: Cu, St: Humilis: hum: Cloud with limited vertical height with a length much bigger than their height: Cu Lenticularis: len: Lens or almond shaped clouds that are stationary in the sky: Sc, Ac, Cc ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 22 February 2025. Visible mass of liquid droplets or frozen crystals suspended in the atmosphere "Nephology" redirects here. Not to be confused with Nephrology. For other uses, see Cloud (disambiguation). Cloudscape over Borneo, taken by the International Space Station Part of a series on Weather ...
Falling diamond dust (Inari, Finland) Diamond dust is similar to fog in that it is a cloud based at the surface; however, it differs from fog in two main ways. Generally fog refers to a cloud composed of liquid water (the term ice fog usually refers to a fog that formed as liquid water and then froze, and frequently seems to occur in valleys with airborne pollution such as Fairbanks, Alaska ...
The 1890 Cloud Atlas is the first known cloud atlas and book of this title, by Hildebrandsson, Wladimir Köppen, and Georg von Neumayer. [5] It was an expensive quarto book of chromolithographs reproducing 10 color oil paintings and 12 photographs for comparison, and was designed to explore the advantages and disadvantages of photography for the scientific illustration of cloud forms. [6]
A polar stratospheric cloud (PSC) is a cloud that forms in the winter polar stratosphere at altitudes from 15,000 to 25,000 m (49,000 to 82,000 ft). They are best observed during civil twilight , when the Sun is between 1° and 6° below the horizon , as well as in winter and in more northerly latitudes. [ 1 ]