CAJ | 학술논문

利用常规观测资料与上海地区的自动站观测资料、风廓线资料及雷达回波资料，对2010年9月1日上海局地强降水过程进行诊断分析。结果表明：该过程两段强降水发生在当年第6号强热带风暴“狮子山”、第7号强台风“圆规”、第8号热带风暴“南川”活动期间；两段强降水受不同系统影响，前者发生在“圆规”西侧，是西风槽和台风倒槽共同作用产生的台风远距离强降水，后者发生在“圆规”西南侧，是“圆规”外围西北风和“狮子山”、“南川”倒槽共同作用，形成数小时风切变，由次生中尺度对流系统产生的强降水；副热带高压与“圆规”相互作用，使副高发生短期调整，“圆规”转向前位于副高西南侧，有利于副高西侧东南暖湿气流伸入山东至上海问内陆，与中纬度冷空气相遇，产生第一阶段远距离强降水；“圆规”转向后，副高加强西伸、脊线南落，其西侧东南暖湿气流北上被切断，转而流向上海至浙北内陆，与“圆规”外围西北气流辐合，使上海地区大气层结向不稳定状态发展，进而触发中尺度对流系统发生发展，产生第二段强降水；由于影响系统不同，两段降水中雨带的雷达回波形态及发展演变各有特点。
이용상규관측자료여상해지구적자동참관측자료、풍곽선자료급뢰체회파자료，대2010년9월1일상해국지강강수과정진행진단분석。결과표명：해과정량단강강수발생재당년제6호강열대풍폭“사자산”、제7호강태풍“원규”、제8호열대풍폭“남천”활동기간；량단강강수수불동계통영향，전자발생재“원규”서측，시서풍조화태풍도조공동작용산생적태풍원거리강강수，후자발생재“원규”서남측，시“원규”외위서북풍화“사자산”、“남천”도조공동작용，형성수소시풍절변，유차생중척도대류계통산생적강강수；부열대고압여“원규”상호작용，사부고발생단기조정，“원규”전향전위우부고서남측，유리우부고서측동남난습기류신입산동지상해문내륙，여중위도랭공기상우，산생제일계단원거리강강수；“원규”전향후，부고가강서신、척선남락，기서측동남난습기류북상피절단，전이류향상해지절북내륙，여“원규”외위서북기류복합，사상해지구대기층결향불은정상태발전，진이촉발중척도대류계통발생발전，산생제이단강강수；유우영향계통불동，량단강수중우대적뢰체회파형태급발전연변각유특점。
Diagnostic analysis of a local severe precipitation process on 1 September 2010 in Shanghai was made by use of conventional ob- servation data, automatic weather station observations, wind velocity profile data and Doppler radar data at Nanhui of Shanghai. The results indicate that two periods of severe precipitation of this process occurred during active period of the severe tropical storm （1006） Florita, the se- vere typhoon （1007） Kompasu and the tropical storm 0008） Namtheun. The two periods of severe precipitation were triggered by different syn- optic systems. The former was generated by common-effect of westerly trough and typhoon inverted trough, and emerged in the west side of Kompasu, The later occurred at southwest side of Kompasu. It was a severe precipitation generated by the common-action of northwesterly wind at periphery of Kompasu and inverted troughs of Florita and Namtheun, several hours of wind shear and secondary meso-scale convec- tive systems. The interaction between subtropical high and Kompasu made the subtropical high adjusted for a short time. Before turning Kom- pasu was located at the southwest side of subtropical high, which was favorable for the southeast warm and wet airflow at the west side of sub- tropical high to stretch to the inland between Shandong and Shanghai to meet the cold air at middle latitudes forming a long distance severe precipitation which is the first period of severe precipitation. After turning of Kompasu, the subtropical high was reinforced and stretched westwards, and its ridge moved southwards cutting off the southeast warm and wet airflow which moved northwards. The southeast warm and wet airflow turned to the area between Shanghai and northern Zhejiang and formed convergence with northwest airflow at periphery of Kompa- su, which led to the instable development of atmospheric stratification in Shanghai area triggering the formation and development of me- so-scale convection systems and causing the second period of severe precipitation. Analysis of Doppler radar data shows that there are differ- ent characteristics about the shape and evolution of radar echoes of rain belts between the two sections of severe precipitation because of dif- ferent synoptic systems.