Climate & Monsoon — Set 3

Correct Answer: D. South-West to North-East

• **South-West to North-East** = the direction of summer monsoon winds in India, originating from the high-pressure Southern Indian Ocean. • **Southern Indian Ocean high-pressure** — the origin of monsoon winds, which are drawn northward by the low pressure over the heated Indian subcontinent. • 💡 Wrong-option analysis: North to South: that would be the winter (NE monsoon) direction; NE to SW: this is the winter monsoon direction; East to West: not the direction of Indian monsoon winds.

Correct Answer: D. Karnataka

• **Cherry Blossoms / Coffee Showers (Karnataka)** = pre-monsoon rains in April-May that trigger blooming of coffee flowers in Karnataka. • **April-May** — the peak months for Coffee Showers that are critical for coffee flowering and subsequent yield. • 💡 Wrong-option analysis: Assam: has Bordoisila (pre-monsoon storms), not Coffee Showers; West Bengal: has Kalbaisakhi; Kerala: has Mango Showers, not Coffee Showers specifically.

Correct Answer: D. Andhra-Odisha Coast

• **Andhra-Odisha Coast** = most affected by tropical cyclones from the Bay of Bengal during the retreating monsoon season (October-November). • **Bay of Bengal cyclone season** — October-November is peak cyclone season in the Bay, with the eastern coast being the most vulnerable. • 💡 Wrong-option analysis: Malabar Coast: sheltered from Bay of Bengal cyclones by the peninsula; Konkan Coast: west coast, faces Arabian Sea, fewer cyclones; Gujarat Coast: far north-west, less cyclone-prone.

Correct Answer: B. Punjab

• **Punjab** = receives rainfall from BOTH the Arabian Sea branch and the Bay of Bengal branch of the Southwest Monsoon, as they merge over NW India. • **Two branches merge over NW India** — the junction point of both monsoon branches lies over Punjab-Haryana, giving them rain from both sources. • 💡 Wrong-option analysis: Maharashtra: gets Arabian Sea branch mainly; Tamil Nadu: gets NE monsoon mostly, not both SW monsoon branches; Kerala: gets Arabian Sea branch first; Bay of Bengal branch contributes less.

Correct Answer: A. Landlocked in the North

• **Indian Ocean landlocked in the North** = the Asian continent blocks cold polar water inflow, allowing the Indian Ocean to retain higher temperatures critical for monsoon formation. • **Low pressure for monsoon** — the warm Indian Ocean surface temperature contributes to the low-pressure system that draws in the SW monsoon. • 💡 Wrong-option analysis: Shallower: not entirely accurate; depth alone doesn't cause higher temperature; Closer to equator: the Atlantic is also near the equator; Smaller in size: size alone doesn't determine temperature.

Correct Answer: A. Tropical Easterly Jet Stream

• **Tropical Easterly Jet Stream** = responsible for the sudden onset of the Indian monsoon, established over the peninsula during summer months. • **Key monsoon onset indicator** — the presence of the Tropical Easterly Jet over India signals that the monsoon system has matured and will break. • 💡 Wrong-option analysis: Subtropical Westerly Jet: present in winter, its northward shift triggers the monsoon but the Tropical Easterly Jet is the direct cause; Local Jet Stream: no such recognized phenomenon; Polar Jet Stream: found at high latitudes, not relevant to Indian monsoon.

Correct Answer: B. Dras

• **Dras (Ladakh)** = one of the coldest inhabited places in the world, with winter temperatures dropping to -45°C. • **-45°C minimum temperature** — the extreme winter low recorded at Dras in Kargil district of Ladakh. • 💡 Wrong-option analysis: Ooty: high altitude in Tamil Nadu but much warmer than Dras; Shimla: cold hill station but not extreme cold like Dras; Darjeeling: cold hill station in West Bengal, temperate not extreme.

Correct Answer: B. Monsoon

• **Monsoon** = primarily driven by the differential heating and cooling between the Indian landmass (heats faster) and the surrounding oceans (heats slowly). • **Land heats 5x faster than sea** — this differential creates the low-pressure over land that draws moist oceanic air inland as the monsoon. • 💡 Wrong-option analysis: Tides: caused by gravitational pull of Moon and Sun, not heating; Volcanic eruptions: caused by tectonic activity; Earthquakes: caused by tectonic plate movement, not atmospheric heating.

Correct Answer: C. Mawat

• **Mawat (Mahawat)** = local term for winter rainfall in North India (Rajasthan, Punjab) caused by Western Disturbances from the Mediterranean. • **Mediterranean origin** — Mawat rains come from Western Disturbances that originate over the Mediterranean and travel eastward into India. • 💡 Wrong-option analysis: Sawan: refers to the monsoon rainy month (July-August), not winter rain; Tahri: not a standard meteorological term; Balson: not a recognized Indian weather term.

Correct Answer: B. Mumbai

• **Mumbai** = has an equable (maritime) climate with moderate temperatures year-round due to its proximity to the Arabian Sea. • **Arabian Sea proximity** — the sea moderates Mumbai's temperature, preventing the extreme heat/cold experienced by inland cities like Delhi. • 💡 Wrong-option analysis: Delhi: extreme continental climate with very hot summers and cold winters; Jaipur: inland semi-arid climate, high temperature variation; Amritsar: inland location, experiences cold winters and hot summers.