Types of Clouds

Clouds are mainly classified as Cirrus, Cumulus, Nimbus and Stratus.

Cirrus :

Formed of high altitude 8000-12000 KM . Almost at the height of Mount Everest . They are thin . look like feather . Low temperature . Composed of Ice Crystals /droplets.

Cumulus :

4000-7000 Km. Like Cotton Wool . Look like Colley flower . May or may not produce rain. If join together chances to rain is heigh . Bigger than Cirrus clouds .

Nimbus :

Black and dark gray middle levels . Very nearer to surface of earth . Extremely dense and opaque to the rays of the sun . Sometimes the clouds so low that they seem to touch the ground . Nimbus clouds are shapeless masses of thick vapour .

Stratus :

Horizontal layer of clouds . Less than 2Km. Like dust and fog . Do not allow sunlight to pass . If it is there the sky look darker .

Cloudy nights are warmer than clear nights because, the cloud cover provides a shield which act as an insulator and store up the heat radiated by the earth and do not permit heat to escape. Clouds act as a blanket, keeping more warmth ( radiation) close to the surface of the planet. Dew is formed when an object’s temperature falls below the dew point. If that object never gets cold enough, dew will not form on it.

  • Cloud Seeding :

Cloud seeding is a weather modification technique that improves a cloud’s ability to produce rain or snow by artificially adding condensation nuclei to the atmosphere, providing a base for snowflakes or raindrops to form.

After cloud seeding takes place, precipitation falls from the clouds back to the surface of the Earth.This we refer as Artificial rain.

  • Rain Forests:

Rain forests in the world experiences annual rainfall amounts of almost 400 inches. More than half of world species and animals found in rainforests .

Rainforests can classified mainly as tropical rain forests and temperate rain forests which is according to tropical and temperate region of earth.

Rainforests are characterised by a closed and continous tree Canopy, Moisture – dependent vegetation , the presence of epiphytes and lianas and the absence of wildfire.

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