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

Discussion

Which weakness affects the kinematic method?

  • A.It cannot be applied over land
  • B.It gives a result whose sign is systematically wrong in regions where the flow is strongly curved
  • C.Small wind errors produce large divergence errors
  • D.It requires observations at a much finer vertical spacing than a radiosonde ascent can ever provide

Answer: C

Divergence is a small difference between large wind components, so a one per cent error in the wind can produce an error of one hundred per cent in the divergence, and those errors accumulate as the profile is integrated. The usual remedy is to adjust the profile so that omega vanishes at the top of the atmosphere. Vertical resolution is a secondary concern and there is no systematic sign error associated with curvature. Most errors here come from carrying a result across from a neighbouring case where it does not hold.

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

Post your comment

Please log in or register to post a comment.