CAJ | 학술논문

利用常规气象资料、卫星、雷达及NCEP 1°×1°的6 h再分析资料，对2013年4月发生在巴州北部的一次天气过程中两种不同的降水类型进行诊断，对云图及雷达特征进行详细分析。结果表明“S”型云西边界凹处对应系统性降水中心，低涡云系南段对应强对流中心。“S”凹处的雷达图中对应有冷式切变，整层上升运动，水汽供应充足，且高层辐散、低层辐合，具备了大降水发生的环境场。雷达分析发现强对流发生在弱垂直风切变及辐散流场环境下，冰雹出现在与风速辐合中心对应的强回波中心下方。低涡云系中低层伴有下沉运动并配合冷平流，而近地面层为锋前暖平流，强对流发生在θse随高度降低的区域，是典型的冷锋锋面过境触发的强对流天气。
이용상규기상자료、위성、뢰체급NCEP 1°×1°적6 h재분석자료，대2013년4월발생재파주북부적일차천기과정중량충불동적강수류형진행진단，대운도급뢰체특정진행상세분석。결과표명“S”형운서변계요처대응계통성강수중심，저와운계남단대응강대류중심。“S”요처적뢰체도중대응유랭식절변，정층상승운동，수기공응충족，차고층복산、저층복합，구비료대강수발생적배경장。뢰체분석발현강대류발생재약수직풍절변급복산류장배경하，빙박출현재여풍속복합중심대응적강회파중심하방。저와운계중저층반유하침운동병배합랭평류，이근지면층위봉전난평류，강대류발생재θse수고도강저적구역，시전형적랭봉봉면과경촉발적강대류천기。
Using routine meteorological data, satellite images, CINRAD data and NCEP 1° ×1° reanalysis data, the system features and cause, especially the characteristics of satellite and radar images for the two different types of rain process at the north part of Bayingolin Mongol Autonomous Prefecture on April 18, 2013 have been diagnostically analyzed. The results show that at the central part of systemic precipitation was the hollow of west borderline in the "S" shape of cloud pattern, the strong convective center was at the south of low vortex clouds. The hollow of "S" clouds corresponding to radar was cold shear, the upward motion, enough water vapor, divergence at high and convergence at low which were the background of occurring strong rain. The strong convective with weak vertical wind shear and divergence airflow, the hail was at the center of wind convergence which were underside the strong radar echo. The low vortex clouds had sinking spot with cold advection in low layer. However there was warm advection before frontal in boundary layer. The strong convective was at the area of pseudo-equivalent potential temperature decreased along with height, which was a typical frontal trigger of the thunder.