P2.48
On the low-level inner-core structure in relation to the environmental vertical wind shear

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Wednesday, 18 April 2012
On the low-level inner-core structure in relation to the environmental vertical wind shear
Heritage Ballroom (Sawgrass Marriott)
Jun A. Zhang, NOAA/AOML, Miami, FL; and R. F. Rogers, P. D. Reasor, J. J. Cione, and E. W. Uhlhorn

This study presents the axisymmetric and asymmetric low-level (<3km) inner core structure in relation to the environmental vertical wind shear. Data from hundreds of GPS dropwindsondes deployed by the research aircraft in thirteen hurricanes are analyzed along with the vertical wind shear from the SHIPS database. The axisymmetric wind speed, temperature and humidity are composited and compared in relation to the shear magnitude. The asymmetric structure of wind, temperature and humidity at three levels (1500m, 500m, and 100m) are presented in relation to the shear direction. The results are discussed and compared to those in recent theoretical studies on shear impact of inflow layer structure.