CAJ | 학술논문

提使用常规天气、灾情、自动站、卫星云图、雷达回波和风廓线雷达等资料，采用统计对比分析和特征提取等方法，对2012年4月10日强飑线天气系统进行分析和研究，结果表明：（1）此次强飑线是由若干个倾斜深厚对流单体所组成，具有紧密排列的回波带结构。（2）云图上表现为中尺度对流系统（MCS）结构特征，随着 MCS 东移降水冷却、西南气流输送暖湿空气和午后地面温度不断升高，地面开始形成温度梯度较大的温度锋区。（3）飑线形成前期，MCS 南侧出现多条平行短带“梳状”回波特征，并在其南端不断产生对流单体回波，最后发展成飑线回波带。（4）飑线移动前方不断产生具有“前伸”、TBSS 和假象回波结构的局地雹云超级单体回波群，这些飑前中小尺度系统是产生此次冰雹灾害的主要回波系统。（5）5 min 风廓线雷达资料在前期阶段，能够观测到西南急流的演变情况，包括急流中的大风区。（6）当飑线系统临近时，受飑线中尺度环流的影响，飑线移动前方具有较强的上升运动，且伸展高度可以达到6000 m，但垂直速度、Cn2和 SNR 都较小；当飑线系统过境时，具有很强的水平风切变，受到强降水的下曳作用，垂直速度、Cn2和 SNR 都明显加大；飑线系统过境后，恢复到前期阶段。
제사용상규천기、재정、자동참、위성운도、뢰체회파화풍곽선뢰체등자료，채용통계대비분석화특정제취등방법，대2012년4월10일강박선천기계통진행분석화연구，결과표명：（1）차차강박선시유약간개경사심후대류단체소조성，구유긴밀배렬적회파대결구。（2）운도상표현위중척도대류계통（MCS）결구특정，수착 MCS 동이강수냉각、서남기류수송난습공기화오후지면온도불단승고，지면개시형성온도제도교대적온도봉구。（3）박선형성전기，MCS 남측출현다조평행단대“소상”회파특정，병재기남단불단산생대류단체회파，최후발전성박선회파대。（4）박선이동전방불단산생구유“전신”、TBSS 화가상회파결구적국지박운초급단체회파군，저사박전중소척도계통시산생차차빙박재해적주요회파계통。（5）5 min 풍곽선뢰체자료재전기계단，능구관측도서남급류적연변정황，포괄급류중적대풍구。（6）당박선계통림근시，수박선중척도배류적영향，박선이동전방구유교강적상승운동，차신전고도가이체도6000 m，단수직속도、Cn2화 SNR 도교소；당박선계통과경시，구유흔강적수평풍절변，수도강강수적하예작용，수직속도、Cn2화 SNR 도명현가대；박선계통과경후，회복도전기계단。
By using the conventional observation data,disastrous loss data,AWS data,satellite infrared images,radar echoes and wind profiler products,a strong squall line process on 10 April 2012 was ana-lyzed with statistical analysis and feature extraction method.The results show that:(1)The squall line is tightly belt-shaped and composed of several tilt and deep convective cells.(2)The characteristics of me-soscal convective system (MCS)structure can be seen in FY2E infrared images.The sharp surface temper-ature front begins to form with MCS moving to east and precipitation cooling,moisture and heat transpor-ted by the southwest airflow and surface temperature rising.(3)Several parallel comb-shaped short-ribbon echoes appear and convection cells are continuously generated in the south side of the MCS.Finally they develop into a squall line echo belt in the earlier stage of the squall line system.(4)Local supercell hail storms with the structure of “front-extend”,TBSS and false echo are generated continuously ahead of the squall line,causing most of the damages during this hail process.(5 )The evolution of southwest jet stream including the gale area can be seen clearly in 5-min intervals wind profiler data in the early stage. (6)When the squall line system approaches,strong ascending motion ahead of the squall line can extend to 6000 m height influenced by the squall line mesoscale circulation,but the vertical velocity,Cn2 and SNR values are low.With the squall line passing,the horizontal wind shear is strong.Due to the dragging down action of strong rainfall,vertical velocity,Cn2 and SNR are significantly increased.After the squall line passes,all signals return to the initial phase.