Different Stages Of Developmemt(cylones)

Question 1

Initial stage

Answer 1

-warm moist subtropical air meets cold dry air at polar front
-no movement across polar front
-air masses don’t mix
-air masses move parallel in opposite directions

Question 2

Development stage

Answer 2

-A disturbance occurs on the polar front cause of:
Friction between two air masses
Differences between land and sea temp
-decrease in local air pressure
-these disturbances lead to local low pressure(warm air that rises )

Question 3

Mature /warm sector stage

Answer 3

-Cold air moves in northern direction(cold front develops )
-warm air pushed in S direction(warm front Develops)
-Winds blow clockwise into low pressure(S hemisphere)
-warm air rises and air masses still separated by front
-Definate warm sector depression occurs
-rainfall occurs along cold front where warm air is forced to rise due to top steep slope of cold front

Question 4

Occluded stage

Answer 4

-warm air narrows as development continues
-cold front moved faster than warm front
-cold front starts to overtake the warm front ,first in Low pressure centre and then outwards
-cold air wedges under warm air and isolates warm air completely from surface

Question 5

Dissipating stage

Answer 5

-Cold air completely isolated warm air from the ground
-upper level wind breaks apart cloud cover
-rainfall decreases and eventually stops