Current Radar or Satellite Image

Flhurricane.com - Central Florida Hurricane CenterHurricanes Without the Hype! Since 1995


Azores #96L fails to complete transition into a Sub-Tropical Storm. Elsewhere, weak low pressure in Caribbean may linger into next week.
Days since last H. Landfall - US: Any 47 (Nate) , Major: 65 (Maria) Florida - Any: 74 (Irma) Major: 74 (Irma)
None
COMMUNICATION
STORM DATA
CONTENT
FOLLOW US
ADS
Login to remove ads

 


General Discussion >> Hurricane Ask/Tell

Jump to first unread post. Pages: 1
Jamiewx
Storm Tracker


Reged: Wed
Posts: 371
Loc: Orlando, Florida
Divergence and Vorticity
      #15302 - Sat Jun 12 2004 10:40 PM

Hey Guys

Is there anyone that can explain what Divergence and Vorticity is and how it affects tropical cyclones. I see maps online all the time and don't how to use them


Post Extras: Print Post   Remind Me!   Notify Moderator  
HanKFranK
User


Reged: Mon
Posts: 1841
Loc: Graniteville, SC 33.56N 81.82W
Re: Divergence and Vorticity [Re: Jamiewx]
      #15386 - Sun Jun 13 2004 10:28 PM

i can give you an idea.. may be 'right' but probably not on the money, scientifically.
vorticity is sort of like angular momentum, but in a fluid... in this case air. it's the tendency for something to continue gyrating, a ripple of lower pressure in the atmosphere with coriolis deflection working on it. it isn't necessarily a closed, circular turning, it may just show as a 'hook' in the wind field. a vorticity maximum is often the focal point for a developing tropical system.
divergence is a 'split' in an air current. when we're thinking of it in terms of tropical weather, it's the stuff happening at high altitudes, jet stream level (around 200mb for instance). when you have a forking in the upper air currents, the air below rises to take its place, think of it sort of like a siphon working on the air parcel below. i'm not sure if you'd call it dynamic forcing. anyway, rising air condenses, usually feeds convection, provides proper ventilation. it can work as a makeshift outflow jet for a developing tropical cyclone.. thats why the location and track of the system relative to the upper air flow is so important.. upper air winds can work for a tropical system (divergence or an outflow jet) or against (wind shear), and have a great deal of the influence in steering most tropical systems.
hope you can use some of that...
HF 0229z14june


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1



Extra information
0 registered and 10 anonymous users are browsing this forum.

Moderator:  CFHC, Ed Dunham, Colleen A., danielw, Clark, RedingtonBeachGuy, Bloodstar, tpratch, typhoon_tip, cieldumort 

Print Topic

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Topic views: 3540

Rate this topic

Jump to

Note: This is NOT an official page. It is run by weather hobbyists and should not be used as a replacement for official sources. 
CFHC's main servers are currently located at
Hostdime.com in Orlando, FL.
Image Server Network thanks to Mike Potts and Amazon Web Services. If you have static file hosting space that allows dns aliasing contact us to help out! Some Maps Provided by:
Great thanks to all who donated and everyone who uses the site as well. Site designed for 800x600+ resolution
When in doubt, take the word of the National Hurricane Center