Wavelike, undulating. Altostratus Cloud Supplementary Features. Altostratus clouds have three supplementary features: mamma, praecipitatio, and virga. Sac-like, resembling cow udders. Precipitation reaching the surface. Evaporating rain strips. Altostratus clouds have only one associated accessory cloud: pannus.
Ragged frazzles, scud. Similar Cloud Types. Altostratus vs. Altocumulus While altostratus and altocumulus clouds are found at the same altitude, altostratus clouds are generally a featureless layer, where altocumulus clouds typically have plenty of features. Nacreous clouds Nitric acid and water polar stratospheric clouds Noctilucent clouds polar mesospheric clouds.
Classification and symbols of meteors other than clouds Hydrometeors Lithometeors Photometeors Electrometeors Character and intensity of precipitation Additional symbols. Hydrometeors other than clouds Lithometeors Photometeors Electrometeors. Introduction Observation of hydrometeors other than clouds Observation of lithometeors Observation of photometeors Observation of electrometeors.
Observation of clouds from the earth's surface Introduction Identifying clouds Total cloud cover and cloud amount Height and altitude Direction and speed of movement Optical thickness Observation of clouds from mountain stations Observation of upper atmospheric clouds. However, if enough moisture is retained at the ground level, the cloud can transform into a nimbostratus. Stratus clouds are very common all over the world most especially in the coastal and mountainous regions.
Cumulus clouds. Cumulus clouds are a sign of fair weather, though they may discharge rains sometimes in form of a light shower. You can find them virtually everywhere in the world expected for the Polar regions. Cumulonimbus is fluffy and white like cumulus but the cloud formations are far larger. For the same reason, cumulonimbus is both a low-level and high-level type of cloud. At the low-altitude base, the cloud is mostly made of water droplets but the high-altitude summit is dominated by ice crystals.
The rain comes and goes with this cloud but when it does, it can come pouring. Stratocumulus looks like a thick white blanket of stretched out cotton. The base is well-defined and flat but the upper part of the cloud is ragged due to convection with the cloud itself. Depending on the thickness of the cloud, a stratocumulus will have light to dark gray hues. People often think rain is imminent when they see these clouds. All of the above represents a broad classification as each type of cloud can be further grouped by species and varieties.
The varieties are grouped and named based upon transparency and the arrangement of cloud elements, like so:. For years, Gavin Pretor-Pinney, who is the founder of The Cloud Appreciation Society , has been on a mission to convince the world that a new category of cloud deserves recognition. He called it Undulatus asperatus, an odd cloud formation with a distinct undulating and rolling motion. Varying levels of illuminations and thicknesses of cloud can lead to dramatic visual effects.
Basically, this type of cloud looks as if it came straight from hell. In March , this very rare cloud formation was officially recognized as a distinct cloud by the International Cloud Atlas, marking the first cloud formation added since cirrus intortus in Its name was changed into Asperitas.
Home Other Feature Post. The types of clouds: everything you need to know Clouds come in all sorts of shapes and sizes. Some look cute and fluffy, others appear menacing and apocalyptic. January 28,
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