단일편파 레이더자료 품질관리기술 특성 분석
Analysis of Quality Control Technique Characteristics on Single Polarization Radar Data
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조회
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다운로드
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인용
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참고문헌
키워드
초록
The radar reflectivity is significantly affected by ground clutter, beam blockage,anomalous propagation (AP), birds, insects, chaff, etc. The quality of radar reflectivity is veryimportant in quantitative precipitation estimation. Therefore, Weather Radar Center (WRC) ofKorea Meteorological Administration (KMA) employed two quality control algorithms: 1) OpenRadar Product Generator (ORPG) and 2) fuzzy quality control algorithm to improve quality ofradar reflectivity. In this study, an occurrence of AP echoes and the performance of both qualitycontrol algorithms are investigated. Consequently, AP echoes frequently occur during the springand fall seasons. Moreover, while the ORPG QC algorithm has the merit of removing non-precipitationechoes, such as AP echoes, it also removes weak rain echoes and snow echoes. In contrast,the fuzzy QC algorithm has the advantage of preserving snow echoes and weak rain echoes,but it eliminates the partial area of the contaminated echo, including the AP echoes.
Abstract
The radar reflectivity is significantly affected by ground clutter, beam blockage,anomalous propagation (AP), birds, insects, chaff, etc. The quality of radar reflectivity is veryimportant in quantitative precipitation estimation. Therefore, Weather Radar Center (WRC) ofKorea Meteorological Administration (KMA) employed two quality control algorithms: 1) OpenRadar Product Generator (ORPG) and 2) fuzzy quality control algorithm to improve quality ofradar reflectivity. In this study, an occurrence of AP echoes and the performance of both qualitycontrol algorithms are investigated. Consequently, AP echoes frequently occur during the springand fall seasons. Moreover, while the ORPG QC algorithm has the merit of removing non-precipitationechoes, such as AP echoes, it also removes weak rain echoes and snow echoes. In contrast,the fuzzy QC algorithm has the advantage of preserving snow echoes and weak rain echoes,but it eliminates the partial area of the contaminated echo, including the AP echoes.
참고문헌 (19)
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