Monitoring the Reflectivity Calibration of a Scanning Radar Using a Profiling Radar and a Disdrometer
Monitoring the Reflectivity Calibration of a Scanning Radar Using a Profiling Radar and a Disdrometer
复制标题
使用剖面雷达和测距仪监测扫描雷达的反射率校准
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
P. Kucera
中科院分区：
文献类型：
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作者：
C. Williams;K. Gage;Wallace L. Clark;P. Kucera
摘要本文介绍了一种利用垂直剖面雷达对扫描气象雷达的反射率进行绝对校准和常规监测的方法，垂直剖面雷达采用配置面差仪进行绝对校准。三种仪器具有不同的时空分辨率，利用升尺度的概念将小分辨率体差仪观测与大分辨率体扫描雷达观测联系起来。本研究使用了1998年8月和9月在佛罗里达中部举行的德克萨斯-佛罗里达飞行下阶段B （tefln -B）地面验证场战役期间从地面分差仪、两台剖面雷达和国家气象局（NWS）天气监视雷达-1988多普勒（WSR-88D）扫描天气雷达收集的观测数据。2个月的2062次匹配廓线和扫描雷达观测数据统计表明，WSR-88D雷达的反射率比WSR-88D雷达高0.7 dBZ。
Abstract This paper describes a method of absolutely calibrating and routinely monitoring the reflectivity calibration from a scanning weather radar using a vertically profiling radar that has been absolutely calibrated using a collocated surface disdrometer. The three instruments have different temporal and spatial resolutions, and the concept of upscaling is used to relate the small resolution volume disdrometer observations with the large resolution volume scanning radar observations. This study uses observations collected from a surface disdrometer, two profiling radars, and the National Weather Service (NWS) Weather Surveillance Radar-1988 Doppler (WSR-88D) scanning weather radar during the Texas–Florida Underflight-phase B (TEFLUN-B) ground validation field campaign held in central Florida during August and September 1998. The statistics from the 2062 matched profiling and scanning radar observations during this 2-month period indicate that the WSR-88D radar had a reflectivity 0.7 dBZ higher than th...