| 移动X波段双线偏振雷达数据质量分析及偏差订正 |
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| 引用本文： | 张林,李峰,冯婉悦,刘新安. 移动X波段双线偏振雷达数据质量分析及偏差订正[J]. 气象, 2021, 47(3): 337-347 |
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| 作者姓名： | 张林 李峰 冯婉悦 刘新安 |
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| 作者单位： | 中国气象局气象探测中心,北京100081;新疆维吾尔自治区气象技术装备保障中心,乌鲁木齐830002;南京恩瑞特实业有限公司,南京211106 |
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| 基金项目： | 国家重点研发计划(2018YFC1506103)资助。 |
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| 摘 要： | 2019年8月,中国电子科技集团第十四研究所南京恩瑞特实业有限公司研制的GLC-12A型移动X波段双线偏振多普勒天气雷达在江苏大丰进行外场观测.根据该雷达外场观测资料,联合盐城新一代SA天气雷达和江苏省6个雨量站资料,对移动X波段双线偏振雷达做数据质量分析.结果 表明,针对同一次降水过程而言,距离越远,衰减越大.为了降...
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| 关 键 词： | X波段双偏振雷达 数据质量 衰减订正 |
Research of Data Quality Analysis and Bias Correction on Mobile X-Band Dual-Polarization Weather Radar |
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| ZHANG Lin,LI Feng,FENG Wanyue,LIU Xinan. Research of Data Quality Analysis and Bias Correction on Mobile X-Band Dual-Polarization Weather Radar[J]. Meteorological Monthly, 2021, 47(3): 337-347 |
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| Authors: | ZHANG Lin LI Feng FENG Wanyue LIU Xinan |
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| Affiliation: | (Meteorological Observation Centre,CMA,Beijing 100081;Observation Center of Uygur Autonomous Regional Meteorological Service,Urumqi 830002;Nanjing Nriet Industrial Co.,Ltd.,Nanjing 211106) |
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| Abstract: | In August 2019,the GLC-12A-type mobile X-band dual-polarization weather radar,developed by Fourteen Research Institute of China Electronics Technology Group,was used to conduct field tests in Dafeng,Jiangsu Province.In this paper,the data quality of the mobile X-band dual-polarization radar was analyzed by using the field observation data of this radar and the CINRAD/SA radar in Yancheng,and the data of six rainfall stations in Jiangsu Province.The results show that the attenuation of the radar after passing through the rain area is related to the distance.For the same precipitation process,the farther the distance,the greater the attenuation.In order to reduce the observation error caused by attenuation,the difference reflectivity Zdr and correlation coefficient ρhv(0)are corrected by signal-to-noise ratio(SNR)to improve the data quality for ground or biological clutter removing.Then the differential propagation phase shift rate K dp or differential propagation phase Φdp after quality control was used to express the total bidirectional reflectivity factor attenuation correction at the distance of R in rain.At last,data analysis shows that the data quality of the revised mobile X-band dual-polarization radar has been improved. |
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| Keywords: | X-band dual polarization weather radar data quality attenuation correction |
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