Clouds - Lecture notes 1-2 PDF

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Summary

clouds, altitude ,types, properties (notes by SA sir)...

Description

CLOUDS CLOUD BASE

PROPERTIES

HEIGHT/ TPYE

CIRRUS CLOUDS

TYPICAL

LOCATION

COMPOSITION

P

Ice crystal

N

ALTITUDE

a. High altitude detached clouds

16,500-45,000 Worldwide feet

g

having fibrous

g

(hair like) or silky appearance. b. Transparent and white in colour & indicative dry weather c. Highest of all clouds CIRRO-

a. White coloured

16,500-45000

CUMULUS

b. Having cirri form

feet

CLOUDS

worldwide

Ice crystals

N g

layer or small globules arranged in distinct group or wavelike form c. Appear as ripples

CIRROSTRATUS CLOUDS

a. Generally white colour b. Is thin white veil

20,000-42000 feet

worldwide

Tiny ice crystals

N

which refract lights

ea

of sun & moon &

of cirrus clouds

thus halos are

c. Spread in sky like

formed around

milky thin sheets d. So transparent that sun and moon are visible through

them.

appear as bright spots behind the clouds. d. Do not form halos around the sun. ALTO CUMULUS CLOUDS

a. Wavy layers of globular form

6500-18000

worldwide

feet

Mostly liquid water, V may also contain

b. Individual masses

ra

ice crystal

of clouds which are fitted closely together in geometrical patterns c. High globular groups of altocumulus are called wool pack clouds d. White/ grey in colour NIMBO

a. Low clouds of dark

STRATUS

colour close to

CLOUDS

ground

2000-18000

worldwide

feet

b. Latin word “nimbus”

Liquid water,

C

raindrops

p

snowflakes & ice

sn

crystals

th

Liquid water

O

meaning “rainstorm” STRATOCUMULUS CLOUDS

a. Grey/ within colour b. Found in round patches c. Associated with fair or clear weather d. They are

2500 m- 3000 m to 20006500 feet

worldwide

sn

c. When these clouds are associated with rains or snow, they are called nimbostratus d. Composed of several uniform layers....