| タイトル | Case studies of clear air turbulence using the diagnostic Richardson Number Tendency formulation |
| 本文（外部サイト） | http://hdl.handle.net/2060/19810008162 |
| 著者（英） | Haines, P. A.; Keller, J. L. |
| 著者所属（英） | Dayton Univ. |
| 発行日 | 1981-01-01 |
| 言語 | eng |
| 内容記述 | The results of four case studies of clear air turbulence (CAT) using the diagnostic Richardson number tendency (DRT) formulation are highlighted. The performance of this technique in resolving regions of documented CAT encounters is encouraging. Its operational adaptability appears particularly attractive in that input data can be supplied by the currently operational rawinsonde system. Two CAT indices are calculated deterministically, sensing synoptic scale changes in static stability and vertical wind shear conductive for supporting mesoscale CAT layers. These two indices reveal volumes of the troposphere which act as source regions for patches of CAT. The first, the time to reach the critical Richardson number necessary for the initiation of turbulent conditions, was first used by Oard (1974). A second index is devised which is an adaptation of Roach's (1970) work relating synoptic scale and mesoscale energetical coupling and gives more information on the relative intensity of these source regions. The output from the DRT computer module highlights specific regions of the atmosphere which can be interpreted operationally in terms of a CAT encounter probability. |
| NASA分類 | METEOROLOGY AND CLIMATOLOGY |
| レポートNO | 81N16680
NASA-CR-3378
UDR-TR-80-97 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/170219 |
