CAJ | 학술논문

利用常规天气图和物理量场资料,从大尺度环流背景、降水天气影响系统、物理量场等方面,分析2008年8月21日发生在山东省济宁市的一次暴雨天气过程的成因。结果表明：此次暴雨天气是在有利的天气背景下发生的,是受西风槽和低空切变线共同影响形成的。低空急流为强降水的产生提供了充分的水汽条件。暴雨落区在水汽通量散度的辐合中心的左前方。卫星云图资料上暴雨云团的移动与天气系统的移动基本一致,切变线上云团发展迅速。
이용상규천기도화물리량장자료,종대척도배류배경、강수천기영향계통、물리량장등방면,분석2008년8월21일발생재산동성제저시적일차폭우천기과정적성인。결과표명：차차폭우천기시재유리적천기배경하발생적,시수서풍조화저공절변선공동영향형성적。저공급류위강강수적산생제공료충분적수기조건。폭우락구재수기통량산도적복합중심적좌전방。위성운도자료상폭우운단적이동여천기계통적이동기본일치,절변선상운단발전신속。
Using the data of routine weather maps and physical quantity field,from the aspects of large-scale circulation background,precipitation weather system and physical quantity field,the process of a heavy rainfall event happened in Jining City during August 2008 was analyzed in this paper.The results showed that with the collective influence from a westerly trough and low-level shear line,low-level jet provided adequate moisture conditions for this heavy rainfall.The distribution of rainfall located in the left front of moisture flux divergence.The movements of rainstorm cloud cluster based on satellite image were basically in accordance with the weather system,and the cloud clusters of shear lines developed rapidly.