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Geography Optional 300+ Score Pack · Model answer

Discuss the hazards associated with the rising of sea surface temperature.

  • UPSC 2021
  • Oceanography

Sea Surface Temperature (SST) is the temperature of the uppermost ocean layer (roughly the top 1 m), the interface through which over 90% of the excess heat trapped by anthropogenic greenhouse gases is absorbed by the climate system, making the ocean the planet's principal heat sink (IPCC AR6, Working Group I).

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What the full answer covers

  • The Heat-Budget Mechanism Behind Rising SST
  • Cyclone and Tropical Storm Intensification
  • Coral Bleaching and Marine Biodiversity Collapse
  • Sea-Level Rise through Thermal Expansion
  • Marine Heatwaves, Deoxygenation, and Fisheries Disruption
  • Contemporary Data-Driven Value Addition

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