两次短时强降水过程的中尺度对比分析  

The comparative analysis of mesoscale characteristics for two short-term heavy precipitation processes

作　　者：谢玉静[1] 张宇[1] 吴岩[1] 

机构地区：[1]黑龙江省气象台,黑龙江哈尔滨150030

出　　处：《黑龙江气象》2013年第3期4-6,共3页Heilongjiang Meteorology

摘　　要：本文利用常规观测、卫星、雷达、自动站等资料对2012年6月8日(过程Ⅰ)和7月1日(过程Ⅱ)黑龙江省两次短时暴雨天气过程进行分析,这两次过程都是受低涡系统影响,强冷空气冲入暖区中产生的短时强降水天气。过程Ⅰ对流系统在冷锋前沿暖区中触发的超级单体风暴,卫星云图上表现为冷锋云带前对流性云团发展,整体呈带状,各个云团孤立,雷达回波上表现为在有序对流回波带上发展起来的超级单体风暴,降水局地性强,强度大。过程Ⅱ是由冷锋触发的飑线云带,雷达图上表现为典型的带状飑线回波,持续时间长,对应降水呈带状分布,影响范围大。Using the conventional observation data, satellite data, radar and automatic station data to analyze the two short-term heavy precipitation processes, which happened on June 8, 2012 （ Process I ） and July 1 （ process II ） in Heilongjiang Province. The two processes are both affected by low vortex system, and the cold air invaded into the warm area cause short-term heavy precipitation. The differences of these two processes are that, in the process I ,a supereell storm is triggered at warm sector in the front of cold front ,it shows convective cloud devel- opment before the cold front, overall appear zonal, every cloud isolated in the satellite images. The characteristics of radar echo shows the supercell storm developed at the convective echo sequence, while precipitation is local and strong. In the process H, a squall line cloud is triggered by cold the typical strip squall line echo, corresponding to the zonal distributi front, and the characteristic of radar echo is on of precipitation and affecting large area.

关 键 词：短时强降水 飑线 中尺度分析 

分 类 号：P458.121.1[天文地球—大气科学及气象学]