Machine-translated by Google. Questions are authored in English.
Top

Discussion

How does anticyclonic curvature alter the speed needed for balance?

  • A.The gradient wind is undefined because the anticyclonic balance admits no real solution at any radius
  • B.The gradient wind is stronger
  • C.The gradient wind is weaker because the centrifugal force opposes the outward pressure gradient force
  • D.They are equal

Answer: B

Around a high the pressure gradient force points outward and the centrifugal force points outward with it, while only the Coriolis force points inward, so a larger wind is needed for balance. The flow is therefore supergeostrophic. A real solution exists provided the pressure gradient stays below a limiting value, so the balance is well defined for all anticyclones actually observed, though that limit is what keeps observed anticyclones weak.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.