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
| Autor: | Daniel T. Dawson II, Louis J. Wicker, Edward R. Mansell, Youngsun Jung, Ming Xue |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Advances in Meteorology, Vol 2013 (2013) |
| Druh dokumentu: | article |
| ISSN: | 1687-9309 1687-9317 |
| DOI: | 10.1155/2013/818394 |
| Popis: | 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. |
| Databáze: | Directory of Open Access Journals |
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