Question

what are westerlies and how are they caused

Answer 1

Westerly depressions are the temperate cyclone which originate in the Mediterranean Sea and brings rainfall to the northwestern states of India like Punjab, Haryana, Himachal Pradesh, and Uttarakhand, which is beneficial for the growth of wheat and barley.

They are caused in the Mediterranean sea due to cyclonic depressions.

Answer 2

Westerlies are prevailing winds from the west to the east. They are caused by high pressured areas in the horse latitudes.