| Session 4B | 
|  | Mesoscale Data Assimilation and Modeling | 
|  | Organizer: Peter B. Roohr, 88th Weather Squadron, Wright-Patterson AFB, OH 
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|  | 1:30 PM | 4B.1 | Wind and thermodynamic retrievals in a supercell thunderstorm: 4DVar results   N. Andrew Crook, NCAR, Boulder, CO; and D. Dowell and J. Sun
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|  | 1:45 PM | 4B.2 | Estimating environmental soundings for use in convective-scale NWP Chris Snyder, NCAR, Boulder, CO; and W. C. Skamarock
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|  | 2:00 PM | 4B.3 | Real-time Storm-scale Forecast Support for IHOP 2002 at CAPS Ming Xue, CAPS/University of Oklahoma, Norman, OK; and K. Brewster, D. Weber, K. W. Thomas, F. Kong, and E. Kemp
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|  | 2:15 PM | 4B.4 | Sensitivity study on nudging parameters for a mesoscale FDDA system   Mei Xu, NCAR, Boulder, CO; and Y. Liu, C. A. Davis, and T. T. Warner
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|  | 2:30 PM | 4B.5 | Event-based verification of operational mesoscale NWP Graham A. Mills, BMRC, Melbourne, Vic., Australia
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|  | 2:45 PM | 4B.6 | A Framework for Globalization of Regional Atmospheric Models: Dry Core and Quasi-Uniform (QU) Grids Miodrag Rancic, Univ. of Maryland Baltimore County, Greenbelt, MD; and H. Zhang
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