Indian Climate and Seasons

The southwest monsoon is the name given to winds that blow from the sea (Arabian Sea and Bay of Bengal) toward the land, bringing the primary rainy season to India from June to September. These moisture-laden winds are critical for agriculture and water resources across the Indian subcontinent.

India's climate is predominantly monsoonal, characterized by seasonal reversal of winds between summer and winter. The tropical monsoon climate dominates most of the country, with distinct wet and dry seasons determined by the southwest and northeast monsoons.

The western coast receives extremely heavy rainfall due to orographic lift - when moisture-laden south-west monsoon winds collide with the Western Ghats, they are forced to rise, cool rapidly, and condense, causing intense rainfall on the windward side.

During summer, the sun appears nearly directly overhead (almost 90 degrees) over the Northern Hemisphere including India due to the tilt of Earth's axis. This direct solar radiation causes intense heating and high temperatures across the country.

Chhattisgarh is located between 17°48'N to 24°N latitude and 80°14'E to 84°25'E longitude in central India. Option B correctly states these coordinates. Option A starts at 18°48'N which is incorrect. Options C and D have incorrect longitude ranges starting from 74°E, which is too far west.

Leh in Ladakh receives extremely low rainfall (less than 50 cm annually) due to the rainshadow effect of the Himalayas. The region is a cold desert with arid conditions. In contrast, Meghalaya (meaning 'abode of clouds') receives some of the world's highest rainfall, Coromandel and Konkan coasts receive moderate to heavy monsoon rains.

The characteristic of the tropical Savannah region is a definite dry and wet season.

La Nina is a cold current flowing across the west coast of South America. It is characterised by low and high pressure prevailing in the Pacific Ocean.

The Southwest Monsoon (June-September) brings about 70-80% of India's annual rainfall and is the primary cause of rainfall across most of the country. The Northeast Monsoon brings rain mainly to Tamil Nadu and Andhra Pradesh.

Neterhat plateau experiences the minimum temperatures in Jharkhand during winter due to its high elevation (approximately 3,600 feet above sea level). Plateau areas are typically cooler than surrounding plains.

Equatorial regions near the equator experience consistently high temperatures, high humidity, and heavy rainfall year-round due to constant solar heating and intense convection. Monsoon regions have seasonal patterns, while savannas have distinct wet/dry seasons.

Karnataka and Kerala receive pre-monsoon showers (mango showers) during April-May. These are convective rains caused by thunderstorms before the main monsoon arrival. Tamil Nadu receives rain later during the northeast monsoon (winter). Andhra Pradesh and Goa don't experience these specific pre-monsoon showers.