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Statement I: The eddy heat flux is directed poleward.

Statement II: The eddy momentum flux converges into the jet during barotropic decay.

In the light of the above statements, choose the correct answer.

  • A.Statement I is incorrect but Statement II is correct
  • B.Both Statement I and Statement II are correct
  • C.Both Statement I and Statement II are incorrect
  • D.Statement I is correct but Statement II is incorrect

Answer: B

Both statements are correct and together they summarise the two halves of the eddy life cycle. The poleward heat flux accomplishes the baroclinic energy conversion during growth, while the momentum flux convergence returns energy to the jet during decay. Between them the two fluxes explain how eddies both feed on and maintain the mean flow.

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