CAJ | 학술논문

提通过冰雹融化过程的热量平衡公式得到0℃层高度与冰雹融化能力的近似关系，分析小尺度冰雹条件下0℃层高度对0℃层冰雹半径和地面冰雹半径的影响。结果表明：地面冰雹半径随0℃层冰雹半径和0℃层高度变化，设定冰雹云判别的雷达回波高度和中心强度等指标时应考虑0℃层高度变化的影响；0℃层高度在2000～6000 m 范围内时，0℃层冰雹最小半径临界值在0．32～1．08 cm，临界降雹的最小上升气流速度在11．5～21．2 m·s－1；结果分析可初步了解0℃层高度对冰雹融化的影响，为冰雹预报及人工防雹作业提供重要参考依据，降低通过 WSR-88D 增强 HDA 算法做冰雹尺寸预报的虚警率。
제통과빙박융화과정적열량평형공식득도0℃층고도여빙박융화능력적근사관계，분석소척도빙박조건하0℃층고도대0℃층빙박반경화지면빙박반경적영향。결과표명：지면빙박반경수0℃층빙박반경화0℃층고도변화，설정빙박운판별적뢰체회파고도화중심강도등지표시응고필0℃층고도변화적영향；0℃층고도재2000～6000 m 범위내시，0℃층빙박최소반경림계치재0．32～1．08 cm，림계강박적최소상승기류속도재11．5～21．2 m·s－1；결과분석가초보료해0℃층고도대빙박융화적영향，위빙박예보급인공방박작업제공중요삼고의거，강저통과 WSR-88D 증강 HDA 산법주빙박척촌예보적허경솔。
Using thermal balance equation during the process of hail melting,the approximate relationship of 0℃ layer height (h 0 )and hail melting ability was obtained,and the influence of h 0 to zero layer hail ra-dius (r 0 )and ground hail radius (r g )was analyzed under the condition of small scale hail.The results show that rg changes with h 0 and r 0 ,so the hail cloud index setting such as radar echo height and center in-tensity is related to the change of h 0 ,when h 0 changes in the range of 2000-6000 m,the threshold of min-imum zero layer hail radius changes between 0.32 cm to 1.08 cm,and the threshold of minimum updraft velocity changes from 11.5 m ·s-1 to 21.2 m ·s-1 .The results show a general understanding on the change of 0℃ layer height to hail melting,which can provide a reference for hail forecast and hail-suppres-sion operation,and reduce the false alarm rate of WSR-88D enhanced HDA algorithm in hail size predica-tion.