UPSC Materials Notes

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*🛡️Tropical Rain Destabilises Oceans Only When Light* *💎Key Findings* ♟️Scientists earlier believed rain makes the ocean’s surface more buoyant (due to freshwater being lighter) ♟️New study (Univ. of Washington, July 2025) finds light rain destabilises the ocean, but heavy rain stabilises it *💎Mechanism* ♟️Rain in tropics often comes with cold pools (cold, dry air + clouds) ♟️These cool the surface, block sunlight & transfer heat to air ♟️Thus, heavier rain makes surface cooler and more stable ♟️Light rain (0.2–4 mm/hr) increases mixing, while heavy rain = negative buoyancy flux (surface stays more stable) *💎Additional Observations* ♟️Rainfall at night destabilises oceans more than during the day ♟️Researchers identified: *⚜️Cold Rain Zone* (W. Pacific & Indian Ocean): High heat loss *⚜️Hot Rain Zone* (Central Pacific): Less heat loss *💎Impact on Climate* ♟️Ocean mixing affects carbon, heat, nutrient transport ♟️Rainfall dynamics influence weather and climate models ♟️Study highlights risk of prediction errors due to simplistic assumptions.

Q. आप किस परीक्षा की तैयारी कर रहे हैं? Q. Which exam are you prepared?

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Q. आप किस परीक्षा की तैयारी कर रहे हैं? Q. Which exam are you prepared?

Q. आप किस परीक्षा की तैयारी कर रहे हैं? Q. Which exam are you prepared?

✅ उत्तर प्रदेश की राजधानी क्या है❓

Q. आप किस परीक्षा की तैयारी कर रहे हैं? Q. Which exam are you prepared?