Cloud Recognition

云朵识别

Posted by WuXin on July 20, 2019

Cloud types

According to the World Meteorological Organization’s International Cloud Atlas, more than 100 types of clouds exist. The many variations, however, can be grouped into one of 10 basic types depending on their general shape and height in the sky. Thus, the 10 types are: Detail:The 10 Basic Types of Clouds

  1. Low-level clouds (cumulus, stratus, stratocumulus) that lie below 6,500 feet (1,981 m)
  2. iddle clouds (altocumulus, nimbostratus, altostratus) that form between 6,500 and 20,000 feet (1981–6,096 m)
  3. High-level clouds (cirrus, cirrocumulus, cirrostratus) that form above 20,000 feet (6,096 m)
  4. Cumulonimbus, which tower across the low, middle, and upper atmosphere

cloud type table

Abbreviation Type Description
Ci Cirrus(卷云) Fibrous white feathery clouds of ice crystals.
Cs Cirrostratus(卷层云) Milky translucent cloud veil of ice crystals.
Cc Cirrocumulus(卷积云) Fleecy cloud,cloud banks of small, white flakes.
Ac Altocumulus(高积云) Grey cloud bundles compound like rough fleecy cloud.
As Altostratus(高层云) Dense gray layer cloud, often even and opaque.
Cu Cumulus(积云) Heap clouds with flat bases in the middle or lower level.
Cb Cumulonimbus(积雨云) Middle or lower cloud level thundercloud.
Ns Nimbostratus(雨层云) Rain cloud. Grey, dark layer cloud, indistinct outlines.
Sc Stratocumulus(层积云) Rollers or banks of compound dark gray layer cloud.
St Stratus(层云) Low layer cloud, causes fog or fine precipitation.
Ct Contrails(航迹云) Line-shaped clouds produced by aircraft engine.
Abbreviation Type Description
Ci Cirrus Fibrous white feathery clouds of ice crystals.
Cs Cirrostratus Milky translucent cloud veil of ice crystals.
Cc Cirrocumulus Fleecy cloud,cloud banks of small, white flakes.
Ac Altocumulus Grey cloud bundles compound like rough fleecy cloud.
As Altostratus Dense gray layer cloud, often even and opaque.
Cu Cumulus Heap clouds with flat bases in the middle or lower level.
Cb Cumulonimbus Middle or lower cloud level thundercloud.
Ns Nimbostratus Rain cloud. Grey, dark layer cloud, indistinct outlines.
Sc Stratocumulus Rollers or banks of compound dark gray layer cloud.
St Stratus Low layer cloud, causes fog or fine precipitation.
Ct Contrails Line-shaped clouds produced by aircraft engine.

cloud types’ influence

relation between cloud type and weather

We surface observers admire clouds for their beauty, but clouds are more than just pretty puffs. In fact, clouds can help you predict upcoming weather. Look out for these eight cloud types next time you’re out backpacking or boating to avoid being caught off guard by a “sudden” rainfall or thunderstorm. Details:Using Clouds to Predict the Weather

relation between cloud types and radiative effects

Cloud types are defined by their top height and optical thickness. Cloud-type variations are shown to be as important as cloud cover in modifying the radiation field of the earth–atmosphere system. Other variables, such as the solar insolation and atmospheric and surface properties, also play significant roles in determining regional cloud radiative effects.Details : Radiative Effects of Cloud-Type Variations

contrails play an important role on climate change

Rising global air traffic and its associated contrails have the potential for affecting climate via radiative forcing. Details:Contrails, Cirrus Trends, and Climate