摘要
文章通过１９９６年７月３０日中尺度对流复合体（ＭＣＣ）的诊断分析，对盛夏华北南部集中出现ＭＣＣ的原因进行了探讨．指出：华北南部ＭＣＣ产生于控制黄淮上空的带状副热带高压西北部边缘．低空的暖湿偏南气流在静止锋上被强迫抬升，引起中尺度对流云团不断新生、合并，是ＭＣＣ生成的主要机制．而华北南部地区西靠太行山脉、东临黄海和渤海的地理环境有利于高温区在这一带形成，以及鲁中山区的阻滞作用有利于地面静止锋形成、加强，则是ＭＣＣ集中出现于华北南部的重要地方性因素．
According to the diagnostic analysis of MCC on July 30,1996,the cause for MCC occurring concentrately in southern North China in midsummer was discussed. It is shown that MCC in southern North China was formed in the northwestern margin of the zonality subtropical high controlling over the Huanghe Huaihe River basin. It was the main mechanism in forming MCC that the southern low level warm wet air current was forced to raise over the stationary front which caused the regenerating and combining of mesoscale convective cloud cluster continually. The geographical environment in southern North China,near by the east of Taihang mountains and by the west of the Yellow Sea and Bohai Sea,was favourable to form the high temperature zone in these areas and the preventing action of Central Shandong Mountains was benefit to form and intensify the surface stationary front. These important local factors caused MCC emerging concentrately in southern North China.
出处
《应用气象学报》
CSCD
北大核心
1998年第4期441-448,共8页
Journal of Applied Meteorological Science
基金
山东省科委"中尺度强风暴灾害性天气监测警报预报服务技术研究"课题
关键词
中尺度
对流复合体
对流性暴雨
环境条件
华北
Mesoscale Convective Complex(MCC) Convective torrential rain Environmental condition
