摘要
地物回波直接影响雷达定量探测降水物质以及雷达资料同化的应用,基于回波纹理变化以及径向速度参数开展新疆C波段多普勒雷达地物回波识别方法应用研究。通过雷达探测范围内第0.5°~24°仰角地形遮挡与FY-2H总云量信息,对不同天气条件下新疆伊宁、喀什两部雷达低层仰角的地物回波识别方法效果进行定性分析,结果表明:晴空天气条件下,该方法不仅能够有效识别雷达站附近的地物回波,同时对因地形遮挡引起的地物回波也能有效识别;在降水天气条件下,能够有效识别地物回波且未对降水回波造成误判;高分辨率的地形数据以及卫星产品对雷达地物回波的识别有一定指导意义,可作为判定因子进一步改进雷达质控方法。
The ground echo directly affects the application of radar in quantitative detection of water substances and radar data assimilation.Based on the variety of texture of reflectivity and radial velocity parameters,this paper studies the application of recognition method of radar ground echo of C-band Doppler radar in Xinjiang.Through the information of elevation occlusion and FY-2 H total cloud amount from the first layer to the third layer within the radar detection range,the low layers of Yining and Kashi radars in Xinjiang under different weather conditions are qualitatively analyzed.The results showed that the method can not only effectively identify the radar ground echo near the radar station,but also the radar ground echo caused by terrain occlusion in clear weather.Under the condition of precipitation,it can effectively identify the radar ground echo without misjudging the precipitation echo.High resolution terrain data and satellite products have certain guiding significance for the recognition of radar surface echo,which can be used as a judgment factor to further improve the radar quality control method.
作者
刘军建
琚陈相
买买提艾力·买买提依明
范水勇
安大维
LIU Junjian;JU Chenxiang;Ali Mamtimin;FAN Shuiyong;AN Dawei(Institute of Desert Meteorology,CMA,Urumqi 830002,China;Center of Central Asia Atmospheric Science Research,Urumqi 830002,China;Institute of Urban Meteorology,China Meteorological Administration,Beijing 100089,China;XinJing Meteorological Observatory,Urumqi 830002,China)
出处
《沙漠与绿洲气象》
2020年第5期76-83,共8页
Desert and Oasis Meteorology
基金
中央级公益性科研院所基本科研业务费(IDM2018010)
新疆气象局气象科研课题(MS201908)
中国沙漠气象科学研究基金(Sqj2018016)
国家重点研发计划专项(2018YFC1507105)。
关键词
多普勒雷达
地物回波识别
评估
Doppler radar
ground echo identification
evaluation
