| 双线偏振雷达测雨效果的对比分析 |
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| 引用本文： | 刘黎平,钱永甫,王致君,楚荣忠. 双线偏振雷达测雨效果的对比分析[J]. 大气科学, 1996, 20(5): 615-619. DOI: 10.3878/j.issn.1006-9895.1996.05.13 |
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| 作者姓名： | 刘黎平 钱永甫 王致君 楚荣忠 |
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| 作者单位： | 1.南京大学大气科学系,南京 210093 |
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| 基金项目： | 本文得到“八五”攻关项目85-906-01-03的支持 |
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| 摘 要： | 本文根据1993、1994年15次层状云和12次对流云降雨过程的地面降雨资料和C波段双线偏振雷达资料，对双线偏振雷达和普通雷达测量不同强度降雨的效果进行了评估和比较。结果表明，从相对误差来看，双线偏振雷达使普通雷达的小雨高估、大雨低估的测量误差趋势减弱，它对小到中雨的测量结果优于普通雷达。双线偏振雷达大雨高估的现象可能与强对流性降雨中冰相粒子的存在有关。
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| 关 键 词： | 双线偏振雷达 遥测降雨 测雨精度 |
Comparitive Study on Dual Linear Polarization Radar Measuring Rainfall Rate |
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| Liu Liping,Qian Yongfu,Wang Zhijun and Chu Rongzhong. Comparitive Study on Dual Linear Polarization Radar Measuring Rainfall Rate[J]. Chinese Journal of Atmospheric Sciences, 1996, 20(5): 615-619. DOI: 10.3878/j.issn.1006-9895.1996.05.13 |
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| Authors: | Liu Liping Qian Yongfu Wang Zhijun Chu Rongzhong |
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| Abstract: | The database is the C-band dual linear polarization radar data and ground raingage network data for 15 stratus and 12 convective rain processes during summers of 1993 and 1994. In this paper, we estimate systematically the measurement accuracy of rainfall rate by the dual linear polarization radar and conventional radar. The result indicates that the underestimation of the rainfall rate during heavy rain and the overestimation during light rain become small by ZDR method. ZDR method can improve the measurement of light and moderate rainfall rate. The overestimation of the rainfall rate during heavy rain by ZDR technique is possibly related with the existence of ice phase hydrometeors. |
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| Keywords: | dual linear polarization radar remote sensing of rain measurement accuracy |
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