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Extratropical Transition

Principal Investigator Sim Aberson (AOML/HRD)

Collaborating Scientists

• Joe Cione (AOML/HRD)
  
• Kathryn Sellwood (UM/CIMAS)
  
• Guy Canscella (UM/MPO)
  
• Sarah Jones (U. Munich)
  
• Chris Velden (CIMSS)
  
• Jim Abraham (EC)
  
• Pete Bowyer (EC)
  
• Pat Harr (NPS)
  

Objective : Improvement of forecasts of the transition of tropical cyclones to extratropical cyclones.

• targeting observations of opportunity such as dropwindsondes from various platforms to those regions most likely to positive impact the specific forecast
• obtain a number of snapshots of a cyclone undergoing transition
• provide improved environmental data sets for other research projects.

Methods :

This will be accomplished by:

• conducting Observing Systems Experiments (OSEs)
• obtaining over-sampled data sets to test targeting strategies
• synoptic examination of the data

Accomplishments :

• Created a comprehensive plan, in coordination with THORPEX, to obtain data on extratropical transition during the 2003 hurricane season and for the THORPEX Pacific Area Regional Campaign.
• Three P-3 flights into Tropical Storm Odette (2003) and two into Tropical Storm Ophelia (2005) successfully gathered data, and initial analysis completed.

FY08 proposed milestones :

• Continue analysis of Noel, Odette, Ophelia, and Hurricane Michelle cases.
• Plan and participate in THORPEX Pacific Area Regional Campaign.

References :

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Last modified: 05/10/2005