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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. [6] [7] Type 1 Veils, very tenuous stratiform; resembles cirrostratus or poorly defined cirrus. Type 2
As a result, the cloud base can vary from a very light to very dark grey depending on the cloud's thickness and how much light is being reflected or transmitted back to the observer. Thin clouds may look white or appear to have acquired the color of their environment or background. High tropospheric and non-tropospheric clouds appear mostly ...
Cirrus uncinus is a type of cirrus cloud. The name cirrus uncinus is derived from Latin, meaning "curly hooks". Also known as mares' tails, these clouds are generally sparse in the sky and very thin. [1] The clouds occur at high altitudes, at a temperature of about −50 to −40 °C (−
The altitude, form, and thickness of the clouds are the main factors that affect the local heating or cooling of the Earth and the atmosphere. Clouds that form above the troposphere are too scarce and too thin to have any influence on climate change. Clouds are the main uncertainty in climate sensitivity. [2]
Stratus clouds are low-level clouds characterized by horizontal layering with a uniform base, as opposed to convective or cumuliform clouds formed by rising thermals. The term stratus describes flat, hazy , featureless clouds at low altitudes varying in color from dark gray to nearly white. [ 2 ]
Cirrus are wispy clouds made of long strands of ice crystals that are described as feathery, [1] hair-like, or layered in appearance. [2] First defined scientifically by Luke Howard in an 1803 paper, [3] their name is derived from the Latin word cirrus, meaning 'curl' or 'fringe'. [4]
Cirrostratus / ˌ s ɪr oʊ ˈ s t r ɑː t ə s / is a high-altitude, very thin, generally uniform stratiform genus-type of cloud. It is made out of ice-crystals, which are pieces of frozen water. It is difficult to detect and it can make halos. These are made when the cloud takes the form of thin cirrostratus nebulosus. [1]
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 Mediocris: med: Clouds of moderate height that are around equal height and length, growing upwards: Cu Nebulosus: neb: Featureless sheet of cloud with no structure: St, Cs ...