CAJ | 학술논문

利用常规观测资料、数值预报产品和NCEP全球再分析网格资料（1°×1°），对2009年11月5—11日新疆一次入冬转折性天气过程进行天气总结和诊断分析。结果表明乌拉尔山脊和深厚的西西伯利亚超长波槽的稳定维持、发展，不断增强的北风带引导极地冷空气向南爆发是本次天气主要的大尺度环流特征。冷空气主要来自于极地和西西伯利亚大陆，水汽来自于西南方向上的中亚地区，冷暖空气在北疆北部快速集中为大降水提供了充足的水汽和辐合上升运动。暴雪天气区动力结构清晰，散度场遵循高层辐散、低层辐合的经典配置；暴雪区整层大气都为垂直速度上升区，有强烈的上升运动；高空急流耦合的次级环流和中低层的低空急流加强了暴雪区的上升运动，强降雪落区位于高空急流入口区的右侧和低空急流的北侧。
이용상규관측자료、수치예보산품화NCEP전구재분석망격자료（1°×1°），대2009년11월5—11일신강일차입동전절성천기과정진행천기총결화진단분석。결과표명오랍이산척화심후적서서백리아초장파조적은정유지、발전，불단증강적북풍대인도겁지랭공기향남폭발시본차천기주요적대척도배류특정。랭공기주요래자우겁지화서서백리아대륙，수기래자우서남방향상적중아지구，랭난공기재북강북부쾌속집중위대강수제공료충족적수기화복합상승운동。폭설천기구동력결구청석，산도장준순고층복산、저층복합적경전배치；폭설구정층대기도위수직속도상승구，유강렬적상승운동；고공급류우합적차급배류화중저층적저공급류가강료폭설구적상승운동，강강설락구위우고공급류입구구적우측화저공급류적북측。
Based on the routine observing data, numerical prediction product and NCEP reanalysis data （ 1°×1°） ,this synthesize analysis focused on a turning winter weather process from November 5 to 11 2009 in Xinjiang. It turned out that the existance and development of the Ural mountain ridge and deep West Siberian super long-wavelength trough and the cold air mass outbreak southward resulted by increased north wind was the large scale circulation characteristics of the process. The cold air was mainly from polar and West Siberian continent, and the water vapor was mainly from middle Asia. Plentiful water vapor and convergent ascending movement lead to strong rainfall on account of rapid converge of the cold and warm air in Northern Xinjiang. In the severe snow area, the dynamic structure was clear and the divergence field was characterized by convergence in the low layer and divergence in the upper. The vertical movement was obvious in the severe snow area. The sub-circulation of the coupled high jet and the low jet in the mid-low layer strengthened the vertical movement. And the severe snow area was located at the right of the entrance of high jet and the north of the low jet.