| 雷达-雨量计-粒子激光探测仪联合估算降水量 |
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| 引用本文： | 房彬,班显秀,郭学良,等.雷达-雨量计-粒子激光探测仪联合估算降水量[J].大气科学,2010,34(3):513-519. |
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| 作者姓名： | 房彬 班显秀 郭学良 等 |
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| 作者单位： | 中国科学院大气物理研究所,北京,100029;辽宁省人工影响天气办公室,沈阳,110016;中国科学院研究生院,北京,100049;中国气象科学研究院,北京,100081;中国科学院大气物理研究所,北京,100029 |
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| 基金项目： | 国家自然科学基金资助项目40875080、 40333033， 国家科技支撑计划项目2006BAC12B00-1， 辽宁省科技厅 “十一五” 重点攻关项目2006210001 |
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| 摘 要： | 为了提高区域降水量观测的空间分辨率, 提出了雷达-雨量计-粒子激光探测仪联合校准法。首先, 利用粒子激光探测仪观测到的滴谱资料建立实时的Z-I关系, 然后, 利用变分法对同时有雷达回波和雨量计资料的点的实测校准因子进行校准, 获得最优校准因子分析场, 最后, 对有雨量计的点取雨量计实际观测值, 没有雨量计的点利用最优校准因子分析场估算降水。利用此方法对辽宁省2007年5月15日一次天气过程进行降水量估算, 结果表明: 雷达-雨量计-粒子激光探测仪联合校准法结合了雨量站观测资料单点精度高和雷达资料时空分辨率高的优点, 提高了降水量的估算精度, 更好地反映了降水的空间分布。
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| 关 键 词： | 激光探测仪 Z-I 关系 降水量估算 雷达回波 |
Area Rainfall Estimation by Using Radar, Raingauge, and Particle Laser-Based Optical Measurement Instrument |
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| FANG Bin,BAN Xianxiu,GUO Xueliang and et al.Area Rainfall Estimation by Using Radar, Raingauge, and Particle Laser-Based Optical Measurement Instrument[J].Chinese Journal of Atmospheric Sciences,2010,34(3):513-519. |
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| Authors: | FANG Bin BAN Xianxiu GUO Xueliang and |
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| Institution: | 1.Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029; Liaoning Weather Modification Office, Shenyang, 110016; Graduate University of Chinese Academy of Sciences, Beijing, 1000492.Liaoning Weather Modification Office, Shenyang, 1100163.Chinese Academy of Meteorological Sciences, Beijing, 100081 |
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| Abstract: | In order to improve observing accuracy of precipitation, a new method of area rainfall estimation by using radar, raingauge, and particle laser-based optical measurement instrument is presented. Firstly, the relationship of Z-I based on raindrop size distribution observed by the particle laser-based optical measurement is established. Then in order to obtain optimal adjusting factor, the variational method is used to adjust the measured adjusting factor between radar echo and raingauge data. Finally, rainfall is calculated by using the optimal adjusting factor. This paper analyzes the precipitation process on May 15, 2007 in Liaoning Province. The result indicates that the actual rainfall spatial distribution can be reflected preferably and the observing accuracy of precipitation can be improved by using radar, raingauge, and particle laser-based optical measurement instrument. |
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| Keywords: | particle laser-based optical measurement instrument relation of Z-I rainfall estimation radar echo |
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