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What Causes Cloud Formation?
Everyday our
atmosphere changes. It happens so often that beautiful cloud formations are
often missed. What causes these clouds we see above us? The water cycle and
Cloud formations and types depend on each other for survival. Without clouds in
our atmosphere, life as we know it on Earth would not be the same.
clouds in our atmosphere
Many people wonder what causes these beautiful clouds in the sky to
form. Condensation plays a significant role in the formation of clouds. Clouds are formed
when air containing water vapor is cooled below a critical temperature called
the dew point. The resulting moisture condenses
into droplets on microscopic dust particles (condensation nuclei) in the
atmosphere. The air is normally cooled by expansion during its upward movement.
Upward flow of air in the atmosphere may be caused by convection resulting from
intense solar heating of the ground. A cold wedge of air (cold front) near the
ground causing a mass of warm air to be forced aloft; or over a mountain range
at an angle to the wind. Clouds are occasionally produced by a reduction of pressure
aloft or by the mixing of warmer and cooler air currents. (The Columbia Electronic
Encyclopedia). Clouds are formed by rising air. Many factors affect the
formation of clouds and all clouds go through the same process of creation
regardless of type or size.
The water cycle, clouds clearly playing an important role in the process
There are many different kinds of
cloud formations. The difference between them are often easily identified by
just looking at their physical characteristics such as color, shape and size.
Out of all the cloud formations possible, there are two types in particular
that are seemingly identifiable among common knowledge; stratus and
cirrus.Stratus clouds are uniform grayish clouds that often
cover the entire sky. They resemble fog that does not reach the ground. Usually
no precipitation falls from stratus clouds, but sometimes they may drizzle.
When a thick fog "lifts," the resulting clouds are low stratus (Cloud
Types!). Stratus clouds are often times viewed as bad weather ahead. Cirrus clouds are thin, wispy clouds blown by high
winds into long streamers. They are considered "high clouds" forming
above 6000 m (20,000 ft). Cirrus clouds usually move across the sky from west to
east. They generally mean fair to pleasant weather (Cloud Types!). On a nice
day one would be pleased to see cirrus clouds reassuring them that the weather
will remain wonderful.
The different types of clouds ranging at different altitudes
Cloud formations play a crucial role
in weather. Clouds can give one an idea whether or not it is going to rain
depending on the color and how many there are in the sky. Scattered white
cumulus clusters sailing across a field of blue promise a dry summer afternoon.
Massive dark thunderheads portend crop-damaging wind and rain. A blanket of
light gray signals a temperate winter's night. (Climatology) Clouds are what
Meteorologists use to predict the weather on the daily to come up with
forecasts with a greater accuracy than ever before. On a sunny day it takes
much longer for water to evaporate because there are fewer clouds in the sky
for the water to evaporate into.
Storm clouds ahead!
Without cloud
formations not only would predicting the weather be a hassle, it would be
impossible. Clouds are vital to the water cycle process, equivalent to being
part of a team. They need each other to work properly. The different types of
clouds affect the weather differently and without the constant change our
seasons would be at a standstill. Clouds are an important part of our
atmosphere and without them fueling the water cycle life as we know it would
not be able to exist. Clouds affect temperature range and reflect light.
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