風廓線雷達與多普勒天氣雷達風矢產品對比及相關分析
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四川省環境保護重大科技專項(2013HBZX01)資助


Comparative Analysis of Wind Vector Products of Wind Profiling Radar and Weather Radar
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    摘要:

    利用成都地區2010年8月和北京沙河地區2011年7—8月風廓線雷達以及多普勒天氣雷達的風廓線探測資料,結合對應時段的天氣現象相關記錄,通過對比分析得到以下結論:①弱降水條件下,在300~2100 m高度內,風廓線雷達與多普勒天氣雷達探測具有很好的相關性,風向相關系數平均值為0596,風速相關系數平均值為0736,在做預報時兩者可以同時應用,互為補充;②強降水天氣條件下,風廓線雷達與多普勒天氣雷達探測的風向、風速變化趨勢基本一致,特別是在300~2100 m之間各個高度上風向、風速相關性較好,風向相關系數平均值為0573,風速相關系數為0508,且風廓線雷達比多普勒天氣雷達探測到的各層風向、風速變化更為詳細、直觀;③陰天條件下風廓線雷達與多普勒天氣雷達的風向、風速相關性低層比高層好;④晴天條件下,風廓線雷達更適合用于預報和監測天氣。

    Abstract:

    By means of Doppler radar and Wind Profiling radar data, along with weather reports in August, 2010 in Chengdu and July and August 2011 in Beijing, an analysis is made of the abilities of different radar to identify the corresponding weather phenomena. The comparative analysis indicates: (1) when there is weaker precipitation, the correlation between horizontal wind directions and speeds obtained by the two kinds of radar is very good within the heights of 300 to 2100 meters, and the wind direction correlation coefficient is 0596, and that of wind speeds is 0736, which should be considered together for forecasting; (2) under the condition of heavy rainfall, the correlation between horizontal wind directions and the speeds obtained by the two kinds of radar is good at different altitudes, especially from 300 to 2100 meters, and the correlation coefficient of the wind directions is 0508, and that of wind speeds is 0573The wind vector products of wind profiling radar give more details; (3) in overcast weather, the correlation between horizontal wind directions and speeds obtained by the two kinds of radar is better at lower levels than that at higher levels; (4) under sunny conditions, the wind profiling radar is more suitable for weather forecasting and monitoring.

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王天義,朱克云,張杰,劉煦.風廓線雷達與多普勒天氣雷達風矢產品對比及相關分析[J].氣象科技,2014,42(2):231~239

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  • 收稿日期:2013-03-10
  • 定稿日期:2013-10-16
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  • 在線發布日期: 2014-04-27
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