What are jet streams? In what ways do they affect the climate of India?
Jet streams are the narrow belt of high altitude westerly winds in the troposphere. They blow at a fast speed of about 110km/h in summers to about 184km/h in winters.
The westerly jet streams are responsible for bringing western cyclonic disturbances to north west India resulting in rainfall in winters.
The easterly jet stream blowing over north India result in the creation of tropic depressions. The latter play a significant role in the distribution of rainfall in the country.