QUESTION ON VERTICAL MOTION AND CLOUDS

Drizzle accurs from ( mưa phùn từ )

• CS (Cirrostratus)
• ST
• NS
• CU

Alhostratus (AS) is

• Low cloud of sheet type
• A medium cloud of sheet type
• A cloud of large vertical growth
• A high cloud of sheet type

Showers occcurs from (mưa rào xuất hiện từ )

• CU
• CB
• AS
• AC

Heavy icing is possible in

• CI
• CS
• ST
• CB

To avoid icing in cloudy conditions,a pilot is advised to fly through a cloud which shows optical phenomena

• Halo
• Corona
• With multi-coloured clouds

Dark gray cloud giving continous rain is called

• AS
• NS
• ST
• CB

A uniform layer of cloud resembling fog but not on the ground

• AS
• NS
• ST

The clouds composed of ice crystals having feathery appearance

• CI
• CS
• AS

NS clouds occur

• At cold front
• At warm front

Halo is associated with the cloud

• AC
• AS
• CS
• CI