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

Discussion

Which process terminates an ordinary single cell storm?

  • A.The arrival of the anvil, whose shadow cools the surface beneath and removes the heating that drove the storm
  • B.The downdraught cutting off the inflow of warm moist air
  • C.The exhaustion of the available moisture, once all of the water vapour in the column has been condensed out
  • D.Radiative cooling

Answer: B

Cold outflow spreading at the surface undercuts the inflow, so the updraught is starved of warm moist air and the cell collapses within about half an hour. This self destruction is why unorganised convection is so transient. Shear that displaces the downdraught from the updraught is what allows a storm to persist, which is the basis of the whole classification of storm types. The shared properties explain why these belong to one family, and the differences explain why more than one exists.

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

Post your comment

Please log in or register to post a comment.