SEMINAR: AOML Seminar - Monday, July 12, 2010 - July 12, 2010 - Dr. Gregory J. Tripoli - “A numerical model designed to simulate the dynamical dynamical evolution of a tropical cyclone”

["Aoml.Receptionist" <Aoml.Receptionist@noaa.gov>]

    AOML Seminar

 

DATE:             Monday, July 12, 2010

 

TIME:             10:30 a.m. -- refreshments at 10:15 a.m.

 

WHERE:      AOML 1st floor conference room

 

SPEAKER: Dr. Gregory J. Tripoli, University of Wisconsin/Madison

 

TITLE:        “A numerical model designed to  simulate the dynamical dynamical evolution of a tropical cyclone”  

ABSTRACT: The evolution of a tropical cyclone is the manifestation of the process of dynamic adjustment to a combination of momentum and mass field forcing driven by the influence of  convective, storm and regional scales.  A numerical hurricane model designed to capture intensity evolution must reconcile these competing dynamics skillfully to accurately simulate intensity change.  The University of Wisconsin Nonhydrostatic Modeling System (UW-NMS) has been designed to optimally capture the dynamics of multi-scale adjustment through a  three-dimensional Lamb vector based formulation of the Navier Stokes equations unique to atmospheric models.  Using numerical techniques employing integral constraints, the three dimensional adjustment process is constrained to yield enstrophy, entropy and potential vorticity conserving flow that enables a physically driven solution  to emerge from the numerically generated confusion found in the dynamics cores of most atmospheric models.