%0 Journal Article %A LV Bo1 %A YANG Shien1 %A WANG Jun2 %A HAN Fengjun1 %A NING Ruibin1 %T Evaluation on Data Quality of X-band Dual Linear Polarization Doppler Weather Radar %D 2016 %R 10.11755/j.issn.1006-7639(2016)-06-1054 %J Journal of Arid Meteorology %P 1054-1063 %V 34 %N 6 %X

Based on the observation data of X-band dual linear polarization Doppler weather radar (724XSP) in Liaocheng of Shandong Province for several precipitation processes, the data quality of polarization parameters from 724XSP radar for these stratiform cloud precipitation processes were evaluated. Combined with the reflectivity factor data of S-band Doppler radar(CINRAD/SA) in Ji’nan, the ehco  intensity between XSP and SA radars was contrasted. The results showed that the beam of XSP radar spreading in stratiform cloud was uniformly attenuated, the structure of stratiform cloud detected by XSP radar was similar to that by SA radar. However, the detecting ability of XSP to echo intensity above 45 dBZ was poor, especially the difference of hailstorm cloud structure between XSP and SA radars was great. The effects of nose on polarization parameters of XSP radar were significant when SNR (signal to nose ratio) was less than 10 dB, the error of polarization parameters was great. The value of ZDR and CC fluctuated greatly when SNR was from 15 dB to 23 dB, the quality of ZDR and CC data was bad. The monitored values of ZDR from XSP radar were lower 0.5 dB than theoretical values. The influences of beam attenuation on ФDP and KDP were smaller, the quality was reliable especially when SNR exceeded 10 dB.

%U http://www.ghqx.org.cn/EN/10.11755/j.issn.1006-7639(2016)-06-1054