CAJ | 학술논문

利用Micaps实时资料、高分辨率T639零场资料、NCEP再分析资料、雷达资料,对2009年4月18日夜间～21日白天辽宁省降水系统的宏观特点及物理量场的结构特征进行了分析.结果表明,中、低纬高空槽的合并加强与地面江淮气旋北上是此次降水过程的主要影响系统,东部高压的阻挡及低空急流对水汽的不断输送是造成近3 d多持续降水的主要降水机制;500 hPa以下高度为水汽辐合区,同时又是上升运动区,700 hPa是急流区,也是水汽输送最强区;雷达回波的零度层亮带与高度场、温度场配置相互吻合.
이용Micaps실시자료、고분변솔T639령장자료、NCEP재분석자료、뢰체자료,대2009년4월18일야간～21일백천요녕성강수계통적굉관특점급물리량장적결구특정진행료분석.결과표명,중、저위고공조적합병가강여지면강회기선북상시차차강수과정적주요영향계통,동부고압적조당급저공급류대수기적불단수송시조성근3 d다지속강수적주요강수궤제;500 hPa이하고도위수기복합구,동시우시상승운동구,700 hPa시급류구,야시수기수송최강구;뢰체회파적령도층량대여고도장、온도장배치상호문합.
Macroscopic characteristics of precipitation systems and physical elements of the structural characteristics during the April 18th night to 21st day of 2009 in Liaoning were analyzed using Micaps real-time data, high resolution initial data of T639 zero field data, NCEP reanalysis data and Radar data.The results showed that the main impact system of the precipitation is the upper trough of middle and lower latitudes merger strengthened and with the ground JiangHuai cyclone north, east high pressure blocking and low-level jet on the continuous transmission of water vapor which is the mainly precipitation mechanisms of continuous rainfall over the past 3 d.The height below 500 hPa is the area of moisture convergence and the rising motion area.The height of 700 hPa is jet area and also the strongest area of transmission of water vapor and the configuration of mutual agreement of the zero-layer bright band of radar echo and height field and temperature field.