| 多普勒雷达与L波段雷达垂直风廓线对比分析 |
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| 引用本文： | 祁凯,吴林林,张庆奎.多普勒雷达与L波段雷达垂直风廓线对比分析[J].气象科学,2022,42(4):557-563. |
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| 作者姓名： | 祁凯 吴林林 张庆奎 |
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| 作者单位： | 安徽省阜阳市气象局, 安徽 阜阳 236000;安徽省人工影响天气办公室, 合肥 230000 |
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| 基金项目： | 中国气象局预报员专项项目(CMAYBY2019-052); 安徽省气象局预报员专项(KY201908) |
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| 摘 要： | 利用2012-2017年阜阳多普勒雷达与L波段雷达测风数据进行对比分析,统计两者的相关性和测量误差,进一步了解多普勒雷达风廓线产品的准确性和可信度。结果表明:两者测风结果一致性较好,风向和风速相关系数分别为0.97和0.94,标准差分别为19.5°和2.65 m·s^(-1)。多普勒雷达风速总体上在同一高度比L波段雷达风速偏小,两者风速相对偏差平均为24.48%;风速标准差随高度增高呈增大趋势,在降水期间对比差值小于非降水;风向标准差在7 km以下呈递减趋势,8 km以上有小幅增加趋势;风速相关系数随高度增加呈增大趋势,除低空偏低以外,其他高度相关系数均较高。
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| 关 键 词： | L波段雷达 多普勒雷达 垂直风廓线 对比分析 |
| 收稿时间： | 2021/5/30 0:00:00 |
| 修稿时间： | 2021/7/28 0:00:00 |
Comparison and analysis of vertical wind profile between Doppler radar and L-band radar |
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| QI Kai,WU Lin-lin,ZHANG Qing-kui.Comparison and analysis of vertical wind profile between Doppler radar and L-band radar[J].Scientia Meteorologica Sinica,2022,42(4):557-563. |
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| Authors: | QI Kai WU Lin-lin ZHANG Qing-kui |
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| Institution: | Fuyang Meteorological Bureau of Anhui, Anhui Fuyang 236000, China;Weather Modification Office of Anhui, Hefei 230000, China |
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| Abstract: | By using the 2012-2017 Fuyang Doppler radar and L-band radar wind measurement data to compare and analyze the correlation and measurement error of the two, learn more about the accuracy and credibility of Doppler radar wind profile products. The results show that the two wind measurement results are in good agreement. The correlation coefficients of wind direction and wind speed are 0.97 and 0.94,and the standard deviations are 19.5ånd 2.65 m·s-1. Doppler radar wind speed is generally lower than L-band radar wind speed at the same height, the relative deviation of the wind speed between the two is 24.48% on average, and the standard deviation of the wind speed increases with the height. The difference of the wind measurement during the precipitation period is smaller than that of the non-precipitation; the standard deviation of the wind direction shows a decreasing trend below 7 km, there is a slight increase trend above 8 km.The correlation coefficient of wind speed showed an increasing trend with the increase of altitude. Except for the low altitude, the correlation coefficients of other altitudes were all higher. |
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| Keywords: | L-band radar Doppler radar vertical wind profile comparative analysis |
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