| 风廓线雷达水平风数据质量控制 |
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| 引用本文： | 陈中钰,杜冰,刘康.风廓线雷达水平风数据质量控制[J].气象科技,2020,48(6):801-807. |
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| 作者姓名： | 陈中钰 杜冰 刘康 |
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| 作者单位： | 四川省气象探测数据中心,成都 610072;高原与盆地暴雨旱涝灾害四川省重点实验室,成都 610072;中国民用航空飞行学院遂宁分院,遂宁 629000 |
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| 基金项目： | 四川省气象局课题(省重实验室 2018 青年 16)资助 |
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| 摘 要： | 基于九龙站风廓线雷达实时水平风数据制定了水平风数据的质量控制方法，首先求取中位数水平风场，其次构建实际观测风场和中位数风场的差值序列，然后求取差值序列的均方差，再根据差值均方差得到质控判别式，最后试验求取质控判别式中的质控阈值。通过对九龙站2017年风廓线雷达水平风数据质量控制发现，实测风向数据有2044185个，25721个没有通过质控，未通过质控的风向数据占总观测的比例是1.258%，风向数据在近地层通过质控的数据最多，随高度增加通过质控的数据量有所下降。实测风速数据有2044185个，18296个没有通过质控，未通过质控的风速数据占总观测的比例是0.895%，风速数据在2000～4000 m出错的最少，近地层次之，4500～7000 m出错的数据最多。质控后风廓线雷达和探空观测风数据的均方根误差减小，相关系数增加，风向数据质量在500～7000 m提升明显，风速数据在1500～8000 m之间提升明显。
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| 关 键 词： | 风廓线雷达 水平风 数据质量控制 |
| 收稿时间： | 2020/1/22 0:00:00 |
| 修稿时间： | 2020/4/1 0:00:00 |
Quality Control of Wind Profiler Radar Horizontal Wind Data |
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| CHEN Zhongyu,DU Bing,LIU Kang.Quality Control of Wind Profiler Radar Horizontal Wind Data[J].Meteorological Science and Technology,2020,48(6):801-807. |
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| Authors: | CHEN Zhongyu DU Bing LIU Kang |
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| Abstract: | Based on the real time horizontal wind data of the wind profiler radar in Jiulong Station, a horizontal wind data quality control method is developed. The method acquires the following: the median horizontal wind field, the difference sequence between observed wind field and median horizontal wind field, the mean square deviation of the difference sequence, the quality control discriminant by the mean square deviation of the difference sequence, and the threshold in quality control discriminant through experiment. According to the quality control results of the wind profiler radar horizontal wind data over Jiulong Station in 2017, a total of 2044185 wind direction data have been observed, and 25721 wind direction data do not pass the quality control, with the proportion of wind direction data without passing the quality control being 1.258%. The wind direction data passed the quality control mostly in the surface layer, and the data passing the quality control decrease with height. A total of 2044185 wind speed data have been observed, 18296 do not pass the quality control, with the proportion of wind direction data without passing the quality control being 0.895%. The wind speed data passing the quality control are found mostly in 2000 to 4000 m, then in the surface layer, and the least in 4500 to 7000 m. The root mean square error decreases after quality control, and the correlation coefficient increases after quality control. Wind direction data quality is improved significantly from 500 to 7000 m, and wind speed data quality is improved significantly form 1500 to 8000 m. |
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| Keywords: | wind profiler radar horizontal wind data quality control |
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