Extended Abstract (480K)15D.2
Implementing a single-Doppler radar technique for tropical cyclones and integrating radar-derived wind fields into H*Wind surface analyses
Shirley T. Murillo, NOAA/AOML/HRD, Miami, FL; and P. Dodge, W. C. Lee, and G. M. Barnes
Improved analysis and forecast guidance for the surface wind field at tropical cyclone landfall are envisioned with enhanced utilization of radar data. The Hurricane Research Division’s hurricane wind analysis system (H*Wind) is a tool that produces surface wind analyses from multiple data sources, can incorporate radar-derived wind fields from the operational network of WSR-88Ds. The Ground-Based Velocity Track Display (GBVTD) is a single-Doppler radar technique for tropical cyclones that provide estimates of the inner-core wind field at altitudes at and above 0.5 km. In other words, GBVTD derives the primary circulation using single-Doppler radar data. It can provide a much higher temporal and spatial resolution for wind estimates than any current data sources. H*Wind assimilates all available data within a two to three hour period prior to analysis in order to obtain sufficient spatial coverage over the domain. The GBVTD-derived wind fields can improve our understanding of the inner-core wind field at landfall. At the conference we will present techniques and results of an augmented H*Wind analyses of surface winds that incorporates the GBVTD surface adjusted wind field using Hurricane Danny (1997) radar data.
Session 15D, Tropical cyclones at landfall IV
Thursday, 6 May 2004, 3:45 PM-5:15 PM, Napoleon III Room
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