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

Discussion

Which vorticity budget term explains the intensification of a mesoscale convective vortex?

  • A.The beta effect, arising from the movement of the system across latitudes as it travels with the flow
  • B.The solenoidal term
  • C.Friction, which concentrates the circulation by drawing air inward across the isobars near the surface
  • D.Stretching by the convergence beneath the stratiform region

Answer: D

Mid-level convergence beneath the stratiform precipitation region stretches the column and concentrates the absolute vorticity into a mesoscale vortex. Such vortices sometimes go on to seed tropical cyclogenesis. The beta effect is negligible over the short lifetime and small scale, the solenoidal term is small in pressure coordinates, and friction acts to dissipate rather than concentrate at these levels. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision.

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

Post your comment

Please log in or register to post a comment.