| 中尺度客观分析方法的对比分析 |
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| 引用本文： | 仲荣根.中尺度客观分析方法的对比分析[J].热带气象学报,1989(2):134-143. |
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| 作者姓名： | 仲荣根 |
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| 作者单位： | 中山大学大气科学系 |
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| 摘 要： | 本文应用两种滤波方法对常规高空资料进行滤波,以分离出中尺度或次天气尺度系统。第一种方法取Shapiro和夏大庆等人设计的算子;第二种方法取Barne设计的滤波算子,用不同权重常数进行试验。 分析表明,两种方法都可以进行尺度分离。就分离效果来看,以权重常数较大的(14)式中尺度分离功能最佳;其次是(1)式和权重常数较小的(14)式。同时还表明,低层中尺度系统与强对流天气(大暴雨)有较好的对应关系,大暴雨出现在中尺度气旋与中尺度反气旋之间,偏于中尺度反气旋一方。
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| 收稿时间： | 1/6/1988 12:00:00 AM |
| 修稿时间： | 1988/5/23 0:00:00 |
A COMPARISON OF OBJECTIVE ANALYSES FOR MESO-SCALE SYSTEMS |
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| Zhong Ronggen.A COMPARISON OF OBJECTIVE ANALYSES FOR MESO-SCALE SYSTEMS[J].Journal of Tropical Meteorology,1989(2):134-143. |
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| Authors: | Zhong Ronggen |
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| Institution: | Department of Atmospheric Sciences, Zhong Shan University |
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| Abstract: | The conventional aerological data are filtered using two filtering methods to detach meso-scale or sub-weather scale systems in this paper.The first method is reproduced from the operator designed by Shapiro (1970) and Xia Dai-Qing et al. (1983). The second method is reproduced from the filtering operator designed by Barnes and the experiment is carried out by means of different weight function constants.The analyses show that systems can be detached by either of the two methods. Eqs.(14)of the larger weight function constant is superior to others in view of the effect of the scalar separation; and Eqs. (1) and (14) of the smaller weight function constant are the Second. It is also shown that there is a close relationship between the low-level meso-scale systems and strong convective weather(such as heavy rainstorms), which are often located between meso-scale cyclones and anticyclones,being closer to meso-scale anticyclones. |
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