UPSC Prelims Marathon 23 April – Weather, climate and seasons of India – 2025

Consider the following statements regarding winter season weather mechanisms in India:
1. The southern branch of the jet stream, flowing south of the Himalayas, significantly influences the winter weather in India.
2. Western cyclonic disturbances, which affect northern India in winter, originate over the Caspian Sea and are carried by the easterly jet stream.
Which of the statements given above is/are correct?

With reference to the mechanism of weather during the Indian summer season, consider the following statements:
1.The Inter-Tropical Convergence Zone (ITCZ) shifts northwards and aligns roughly parallel to the Himalayas by July.
2.The westerly jet stream strengthens over the Indian subcontinent during the summer monsoon.
3.The southwesterly winds responsible for the monsoon originate from a maritime tropical airmass crossing the equator.
Which of the above statements are correct?