Q. With reference to the Western Disturbances, consider the following statements:
1.These are low-pressure systems originating in the Bay of Bengal.
2.Snowfall in the Himalayas and northern India is one the impacts of Western Disturbances on India.
3.Western Disturbances contribute to the winter precipitation in India by generating convective rainfall.
How many of the statements given above are correct?
Answer: A
Notes:
Explanation –
Statements 1 and 3 are incorrect. Western Disturbances are not low-pressure systems originating in the Bay of Bengal. Instead, they are extratropical storms originating in the Mediterranean region. Western Disturbances do not primarily generate convective rainfall. Instead, they cause orographic lifting of moist air masses as they encounter the mountains. This lifting leads to adiabatic cooling and condensation, resulting in precipitation, including snowfall.
Statement 2 is correct. Western Disturbances bring cold and wet weather, leading to snowfall in the Himalayas and northern regions of India.
Source: Forum IAS
