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Geography Optional 300+ Score Pack · Model answer

What is the relationship between ocean currents and global surface wind systems? Explain with examples how does the gyre in the Northern Hemisphere differ from the one in the Southern Hemisphere.

  • UPSC 2022
  • Oceanography

Ocean surface currents originate almost entirely from frictional drag between prevailing winds and the sea surface — wind is the primary engine, but the water's actual path is never simply "with the wind."

You are reading the opening of the model answer. The full answer is part of the Geography Optional 300+ Score Pack.

What the full answer covers

  • Wind as the Primary Driver — the Ekman-Coriolis Mechanism
  • From Wind Belts to Closed Gyres
  • How the Northern Hemisphere Gyre Is Built
  • How the Southern Hemisphere Gyre Is Built
  • Why the Two Hemispheres Genuinely Differ, Not Just Mirror Each Other
  • Conclusion

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