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Area in W. Carib now up to 40% chance for development, being tracked as Invest 90L. Lots of rain for Florida this week.
Days since last H. Landfall - US: Any 226 (Nate) , Major: 243 (Maria) Florida - Any: 253 (Irma) Major: 253 (Irma)
 


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spinup
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Reged: Sat
Posts: 25
inverted v and amplitude
      #75715 - Tue Jul 03 2007 10:23 PM

can someone please inform me of the meaning of an inverted v?
and, what is the meaning of the amplitude of a wave?
i hope i have my terminology at least minimally decipherable.
thank you very much.


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danielwAdministrator
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Reged: Wed
Posts: 3504
Loc: Hattiesburg,MS (31.3N 89.3W)
Re: inverted v and amplitude [Re: spinup]
      #75724 - Wed Jul 04 2007 04:41 AM

I am not a MET, but I will give it a shot. One of the METs can do better with this question.

The inverted -v is the appearance of the tropical wave on satellite, surface and upper air charts. Best example I can find is located here: Inverted V

As for the amplitude question. Using the link above. Notice the amount of deflection (rise) in the inverted-v diagram.
The bottom line (labeled 10) would be considered a"low amplitude" wave.. if all of the remaining lines were of the same amplitude. The wave shown would be a "low amplitude wave".

However, the line marked "12" is of medium to large amplitude.
So I personally would consider the wave pictured on the link as a large amplitude wave. Mainly because it extends from 10N to 26N, in the picture. That is well over a 1000 miles.

Here is a link to a paper written many years ago by Dr Neil Frank, former Director of NHC. Who now works as a TV Met in Houston, Tx.
http://docs.lib.noaa.gov/rescue/mwr/097/mwr-097-02-0130.pdf


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