单多普勒雷达反演风场的质量控制

Quality Control of Single Doppler Radar Derived Wind Field

利用扩展VAP方法,通过极值订正,时间和空间连续性订正等方法,对反演后的风场进行质量控制,并与双多普勒雷达风场反演结果进行了对比。结果表明,经过订正的反演风场中大部分有明显误差的点得到了修正,而且订正后的风场更合理,与双多普勒雷达风场反演结果更一致,提高了反演风场的质量。

Currently, wind retrieval with Single-Doppler radar data is still a difficult issue, and the retrieved wind is in low quality and difficult to apply. This is due to the low quality of radar data itself and the deficiency of retrieval methods. Based on a newly developed retrieval method Extended-VAP, several quality control methods including extremal check, spatial continuity check and temporal consistency check were developed and applied to the retrieval of wind field. Results show that most of the points which contain obvious errors could be corrected, the modified field seems more reasonable and consistent with Dual-Doppler radar retrieved field, and therefore the quality is much improved. However how to determine a proper correction threshold and extra model-related procedure needs further investigation.