| 二维场的高斯权重带通滤波分析 |
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| 引用本文： | 何溪澄,万齐林.二维场的高斯权重带通滤波分析[J].气象学报,1995,53(1):122-128. |
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| 作者姓名： | 何溪澄 万齐林 |
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| 作者单位： | 广州热带海洋气象研究所 |
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| 摘 要： | 首先对任意的二维气象要素场推导出其带通滤波的响应函数，并进一步引入了带通滤波的相对响应函数。基于相对响应函数的性质，得到了权重参数Ｃ１、Ｃ２的合适选择。通过实例研究，说明由结构函数曲线选取最大响应波长的方法。实例分析结果表明，带通滤波能对暴雨、强对流天气分析提供一定帮助。
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| 关 键 词： | 带通滤波，响应函数，权重参数 |
| 收稿时间： | 4/8/1992 12:00:00 AM |
| 修稿时间： | 6/1/1992 12:00:00 AM |
BANDPASS FILTERING ANALYSIS WITH GAUSS WEIGHTING IN TWO-DIMENSIONAL FIELDS |
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| He Xicheng and Wan Qilin.BANDPASS FILTERING ANALYSIS WITH GAUSS WEIGHTING IN TWO-DIMENSIONAL FIELDS[J].Acta Meteorologica Sinica,1995,53(1):122-128. |
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| Authors: | He Xicheng and Wan Qilin |
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| Institution: | Guangzhou Institute of Tropical and Oceanic Meteology, Guangzhou, 510080;Guangzhou Institute of Tropical and Oceanic Meteology, Guangzhou, 510080 |
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| Abstract: | This paper examines the response of the bandpass filter with Gauss weighting to arbitrary two-dimensional fields and suggests a new concept: Relative Response Function.Based on the nature of relative response function. satisfactory weighting parameters C1, C2,are obtained. By studying of selected case, the procedure of using structure function curves to choose the maximum response wavelength is formulated. It is shown that bandpass filtering offers some improvements to the analysing and forecasting of mesoscale weather processes. |
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| Keywords: | Bandpass filtering Response function Weighting parameter |
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