| 利用多普勒雷达定量估测降水试验 |
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| 引用本文： | 徐继延,郭建华,蔡冠勋.利用多普勒雷达定量估测降水试验[J].气象与减灾研究,2007,30(4):52-56. |
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| 作者姓名： | 徐继延 郭建华 蔡冠勋 |
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| 作者单位： | 抚州市气象台,江西,抚州,344000 |
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| 基金项目： | 江西省科技厅项目“江西省人工影响天气作业指挥系统”. |
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| 摘 要： | 利用南昌多普勒雷达体扫资料和抚州市气象台站自记雨量资料,建立了定量估测降水方程,在抚河流域的不同区域进行了定量估测降水对比试验,据此给出了有利人工增雨作业的多普勒雷达产品判据。结果表明,综合利用多仰角基本反射率、回波顶高和垂直积分含水量进行定量估测降水,效果明显好于单独利用单仰角基本反射率估测定量降水。在降水量≤3 mm时,综合定量估测降水值、常规定量估测降水值与实测降水值比较吻合;在降水量>3 mm、特别是出现较大降水(>5 mm)时,与常规定量估测降水值相比,综合定量估测降水值更接近实测降水值。
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| 关 键 词： | 降水量 定量估测 雷达资料 |
| 文章编号： | 1007-9033（2007）04-0052-05 |
| 收稿时间： | 2007-09-18 |
| 修稿时间： | 2007-10-27 |
Quantitative Precipitation Estimation Test Based on Doppler Radar |
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| XU Ji-yan,GUO Jian-hua,CAI Guan-xun.Quantitative Precipitation Estimation Test Based on Doppler Radar[J].Meteorology and Disaster Reduction Research,2007,30(4):52-56. |
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| Authors: | XU Ji-yan GUO Jian-hua CAI Guan-xun |
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| Abstract: | The volume scan data of Nanchang Doppler weather radar and the precipitation data in Fuzhou weather station,an equation for quantitative precipitation estimation in different climatic regions over the Fuhe valley was established,and the results were compared.Based on the equation the Doppler radar criterion for artificial precipitation was proposed.The results show that it is much better to estimate quantitative precipitation by comprehensively utilizing radar products such as elevations,echo top and vertical integrated liquid water content than by simply using base reflectivity at single elevation.The estimations from the two methods are similar while the rainfall is not more than 3 mm,and the estimation from the comprehensive method is closer to the fact while the rainfall is over 3 mm,in particular while it is heavier,such as over 5 mm. |
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| Keywords: | Rainfall Quantitative precipitation estimation Radar data |
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