| タイトル | A proposed microburst nowcasting procedure using single-Doppler radar |
| 著者（英） | Roberts, Rita D.; Wilson, James W. |
| 著者所属（英） | National Center for Atmospheric Research |
| 発行日 | 1989-04-01 |
| 言語 | eng |
| 内容記述 | Thirty-one microburst-producing storms from northweast Colorado were studied using single and multiple Doppler radar for the purpose of identifying radar signatures that indicated the development of a downdraft capable of producing a microburst. Descending reflectivity cores, increasing radial convergence within cloud, rotation, and reflectivity notches, were found to be microburst precursors, appearing typically 2-6 min prior to initial surface outflow. Three conceptual models have been drawn, based on the 31 events, to summarize the radar signatures of importance in low, moderate, and high-reflectivity microburst-producing storms. A forecaster-computer environment is proposed to allow the forecaster to readily view radar reflectivity and Doppler velocity information in both unprocessed and analyzed form. Use of multiimage radar displays and time-height profiles of quantitative radar estimates of reflectivity and radial shear are suggested to provide an environment where rapid progress can be made in developing techniques to nowcast microbursts. |
| NASA分類 | METEOROLOGY AND CLIMATOLOGY |
| レポートNO | 89A39873 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/363393 |
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