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Statement I: The gradient wind around a low is subgeostrophic.

Statement II: The gradient wind around a high is supergeostrophic.

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: around a low two outward forces oppose the inward pressure gradient so a smaller wind balances, while around a high only one inward force opposes two outward ones so a larger wind is required. Setting the two cases side by side is the clearest way to remember which is which, and the asymmetry between them is what limits the intensity of anticyclones while leaving cyclones unconstrained.

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