CAJ | 학술논문

利用郑州、商丘新一代天气雷达资料、河南省逐分钟自动站等加密探测资料,对2009年6月3日发生在商丘地区的强飑线形成机制进行了分析。结果表明：低涡后部横槽携带冷空气沿西北气流下滑与低层暖湿空气在商丘汇聚,在低层辐合线、干线触发下,位于辐合中心的商丘爆发强飑线;初始对流回波沿边界辐合线发展加强并形成超级单体强风暴;在开封与商丘之间的露点锋（干线）作用下,发展起来的晴空边界辐合线触发新生对流并发展加强,与超级单体强风暴汇合成强飑线迅速东南移影响商丘地区;雷暴大风前商丘大片超折射回波预示该处有干暖盖存在,为飑线移到商丘爆发更为激烈的强对流天气提供了大量的不稳定能量;强飑线回波带上超级单体风暴和后来发展形成的弓形回波是造成商丘地区强天气的关键,雷暴大风发生在辐合线后侧,辐合线后侧具有典型的中尺度雷暴高压、中尺度低温中心、风场辐散等特征;强雷暴高压、高压前侧的强气压梯度以及强飑线的快速移动是宁陵、夏邑和永城等地有气象记录以来极端大风产生的直接原因。
이용정주、상구신일대천기뢰체자료、하남성축분종자동참등가밀탐측자료,대2009년6월3일발생재상구지구적강박선형성궤제진행료분석。결과표명：저와후부횡조휴대랭공기연서북기류하활여저층난습공기재상구회취,재저층복합선、간선촉발하,위우복합중심적상구폭발강박선;초시대류회파연변계복합선발전가강병형성초급단체강풍폭;재개봉여상구지간적로점봉（간선）작용하,발전기래적청공변계복합선촉발신생대류병발전가강,여초급단체강풍폭회합성강박선신속동남이영향상구지구;뇌폭대풍전상구대편초절사회파예시해처유간난개존재,위박선이도상구폭발경위격렬적강대류천기제공료대량적불은정능량;강박선회파대상초급단체풍폭화후래발전형성적궁형회파시조성상구지구강천기적관건,뇌폭대풍발생재복합선후측,복합선후측구유전형적중척도뇌폭고압、중척도저온중심、풍장복산등특정;강뇌폭고압、고압전측적강기압제도이급강박선적쾌속이동시저릉、하읍화영성등지유기상기록이래겁단대풍산생적직접원인。
Based on intensive observation data from the new generation weather radar in Zhengzhou, Shangqiu and the data by the minutes from automatic station in Henan, the formation mechanism of strong squall line in Shangqiu on June 3, 2009 was analyzed. The results show as follows. The cold air carried by transverse trough in the rear of low vortex down along the northwest airflow joins low-level warm moist air in Shangqiu and is triggered by both the low-level convergence line and dry line, a strong squall line broke out in Shangqiu where is in the convergence center. The initial convective echoes developed and strengthened along the boundary convergence line and formed a severe su- percell storm. Under the action of dew point front (dry line) between Kaifeng and Shangqiu, a newborn convection triggered by the developed clear air boundary convergence line developed, strengthened and joined the severe supercell storm to form the strong squall line moving rapid- ly southeastwards to impact Shangqiu area. Before thunderstorm wind happened, a lot of super-refracted echo in Shangqiu indicated an exist- ing dry and warm lid which provided a great deal of instable energy for outbreak of more severe convective weather after the squall lines moved to Shangqiu. The supercell storm reflected in the strong squall line echo band and later evolved bow echo were the key factors causing the strong squall line in Shangqiu area. The thunderstorm winds occurred in the back of the convergence line which had the typical character- istics of mesoscall thunderstorm high, mesoscall low-temperature center, wind field convergences and so on. The severe thunderstorm high, strong pressure gradient in front of high and strong squall line moving fast resulted in the extreme high wind since meteorological records in Ningling, Xiayi, Yongcheng and other places.