WALLPAPER ASPERATUS CLOUDS

asperatus clouds

Asperitas formerly known as Undulatus asperatus is a cloud formation first popularized and proposed as a type of cloud in by Gavin Pretor-Pinney of the Cloud Appreciation Society. Altocumulus or Stratocumulus depending on height, as Asperitas is thought to be a cumuliform structure [1]. Margaret LeMone, a cloud expert with the National Center for Atmospheric Research has taken photos of asperatus clouds for 30 years, and considers it in her own words, a new cloud type. Just look at them! On October 28, , an Asperitas cloud layer formed over Tuscaloosa, Alabama. For the genus of snails, see Asperitas.

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News pieces appeared in the UKthe USonline and in many other contries.

Undulatus Asperatus Clouds Appear Over Boston Area

DL Rover June 10, at9: Cloud genera and selected species, supplementary features, and other airborne hydrometeors – WMO Latin terminology except where indicated. They are categorised into 10 different genera according to their appearance and position in the sky. The Royal Meteorological Society is now encouraging the international meteorological community to update the Cloud Atlas and include asperatus to make it official.

The 12 clouds are now formally listed in International Cloud Atlas. Asperitas formerly known as Undulatus asperatus is a cloud formation first popularized and proposed as a type of cloud in by Gavin Pretor-Pinney of the Cloud Appreciation Society.

Skip to main content. These wave-like structures form on the underside of the cloud to makes it look like a rough sea surface when viewed from below. After all I will be subscribing for your rss feed and I hope you write again very soon!

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Asperitas clouds

But we always thought it a pretty unlikely to ever be accepted as an official term. It is hypothesised that their appearance is associated with the aftermath of convective thunderstorms, though they have also been sighted in relatively calm environments. He has worked with scientists at the As;eratus of MeteorologyUniversity of Reading on possible mechanisms for the formation of asperitas, cloudss a paper [11] published in the Royal Meteorological Society’s journal Weather.

Along with asperetas, cavum, cauda tail cloudfluctus Kelvin-Helmholz wave and murus wall cloud are also being added to the list of the new clouds. They are the perfect sign to indicate that something bad is coming! Classification and symbols of meteors other than clouds Hydrometeors Lithometeors Photometeors Electrometeors Character and intensity of precipitation Additional symbols.

An Update on the Asperatus Cloud – Cloud Appreciation Society

Introduction and principles of cloud classification Definition of a cloud Appearance of clouds Principles of cloud classification Cloud classification summary Clods abbreviations and symbols. Observation of clouds from the earth’s surface Introduction Identifying clouds Total cloud cover and cloud amount Height and altitude Direction and speed apseratus movement Optical thickness Observation of clouds from mountain stations Observation of upper atmospheric clouds.

What is clear however is that atmospheric conditions must be unstable to form a wavy cloud base like that seen with asperitas.

I just like the valuable information you provide to your articles. Well-defined, wave-like structures aspedatus the underside of the cloud; more chaotic and with less horizontal organization than the variety undulatus. I appreciate you finding the time and energy to put this information together. Added to the International Cloud Atlas as a supplementary feature in Marchit is the first cloud formation added since cirrus intortus in July 20, In Attention All Cloudspotters.

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Asperitas clouds – Met Office

By studying the weather records and using a computer model to simulate the cloud, Graeme found evidence that asperatus is formed in the sort of conditions that produce mamma clouds also known as mammatusbut when the winds up at the cloud level cloudz it to be sheared into wavelike forms known as undulatus. Darlisa Black June 8, at3: Recent sightings over Chicago. Views Read Edit View history.

Asperatus over Schiehallion, Perthshire, Scotland.

Asperitas is characterized by localized waves in the cloud base, either smooth or dappled with smaller features, sometimes descending into sharp points, as if viewing a roughened sea surface from below.

Polar mesospheric cirriform type Noctilucent. Between then and the case was supported by members of the public sending in images of the dramatic cloud formations. Altocumulus or Stratocumulus depending on height, as Asperitas is thought to be a cumuliform structure [1].

This described a series of sightings of the cloud, which were interpreted as being associated with the propagation of gravity waves through a pre-existing cloud layer. We’ve been making some changes. From Wikipedia, the free encyclopedia.