Low-Level Polarimetric Radar Signatures in EnKF Analyses and Forecasts of the May 8, 2003 Oklahoma City Tornadic Supercell: Impact of Multimoment Microphysics and Comparisons with Observation | Zendy

Daniel T. Dawson | Zendy; Louis J. Wicker | Zendy; Edward R. Mansell | Zendy; Youngsun Jung | Zendy; Ming Xue | Zendy

Open Access

Low-Level Polarimetric Radar Signatures in EnKF Analyses and Forecasts of the May 8, 2003 Oklahoma City Tornadic Supercell: Impact of Multimoment Microphysics and Comparisons with Observation

Author(s) -

Daniel T. Dawson,

Louis J. Wicker,

Edward R. Mansell,

Youngsun Jung,

Ming Xue

Publication year - 2013

Publication title -

advances in meteorology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.482

H-Index - 32

eISSN - 1687-9317

pISSN - 1687-9309

DOI - 10.1155/2013/818394

Subject(s) - mesocyclone , supercell , algorithm , data assimilation , meteorology , geology , radar , computer science , physics , storm , doppler radar , telecommunications

The impact of increasing the number of predicted moments in a multimoment bulk microphysics scheme is investigated using ensemble Kalman filter analyses and forecasts of the May 8, 2003 Oklahoma City tornadic supercell storm and the analyses are validated using dual-polarization radar observations. The triple-moment version of the microphysics scheme exhibits the best performance, relative to the single- and double-moment versions, in reproducing the low-ZDR hail core and high-ZDR arc, as well as an improved probabilistic track forecast of the mesocyclone. A comparison of the impact of the improved microphysical scheme on probabilistic forecasts of the mesocyclone track with the observed tornado track is also discussed

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