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According to the theory of separation and reconstruction of wind field, the Q vector is separated accordingly in limited area using the approach of harmonic-cosine series expansion. The rotational and divergent components of Q vector are introduced into diagnosing weather systems as an improvement in the traditional Q vector analyses. Through a case study of a torrential rain event, potential advantages of the improved Q analyses approach can be seen in dynamic identification of both the location and the position of heavy rain centers.
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Keywords:
- Q vector analyses /
- harmonic-cosine series expansion /
- torrential rain event /
- dynamic identification
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物理学报. 2008, 57(4): 2600-2606.
doi: 10.7498/aps.57.2600.
从流场分解角度改进Q矢量分析方法及其在暴雨动力识别中的应用
- 收稿日期: 2007-07-09
- 修回日期: 2007-11-07
- 刊出日期: 2008-02-05
English Abstract
Improved Q vector analyses from the perspective of field separation and its application in a torrential rain event
- Received Date:
09 July 2007
- Accepted Date:
07 November 2007
- Published Online:
05 February 2008
Abstract: According to the theory of separation and reconstruction of wind field, the Q vector is separated accordingly in limited area using the approach of harmonic-cosine series expansion. The rotational and divergent components of Q vector are introduced into diagnosing weather systems as an improvement in the traditional Q vector analyses. Through a case study of a torrential rain event, potential advantages of the improved Q analyses approach can be seen in dynamic identification of both the location and the position of heavy rain centers.
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