Test-2: Climatology and Oceanography (Examrace IAS Mains Geography Optional-Test Series 2017)

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  1. Candidates must attempt all 5 questions.

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1. (a) Explain criteria Thornthwaite adopted for climatic classification in 1948. Elucidate how Stamp’s Climatic regionalization differed from Thornthwaite. (20)

(b) Differentiate between dew, hail and fog? What are the various forms of precipitation? (15)

(c) Explain Palmen’s Heat Convective model in climatology. (15)

2. (a) What is thermohaline circulation? How it affects the ocean salinity? (15)

(b) Describe the importance of convergence of warm and cold current? With help of diagram explain the patterns of global ocean currents. (15)

(c) Write short notes on (4 × 5 = 20)

  • Tricellular Meridonial Circulation

  • Coriolis Force

  • Pressure Gradient Force

  • Permanent Winds

3. (a) Explain the various types of atmospheric circulation? What is Norwester and Harmattan? (25)

(b) What are anabatic and katabatic winds? (10)

(c) What is urban heat island? Why the significance of heat island has increased recently? (15)

4. (a) “Ocean relief is more similar than dissimilar to land”. Comment. (20)

(b) What are polar fronts? Explain the weather and cyclonic conditions associated with polar fronts? (15)

(c) Discuss coral bleaching throwing light on third coral bleaching and Wilkinson’s report. (15)

5. (a) “Ocean plays critical role in removing carbon from atmosphere.” Justify. (30)

(b) “Anthropogenic induced marine pollution as significantly contributed to deterioration of ocean bottom”. Discuss. (20)

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