东北一次较大降水天气过程分析

东北一次较大降水天气过程分析

邵玉平;白玉兰

【期刊名称】《安徽农业科学》

【年(卷),期】2011(039)030

【摘要】从天气形势、物理量条件、卫星云图等几个方面,对2010年7月20 ～21日东北出现的一次较大程度的强降水过程进行分析,探讨此次东北暴雨的发生特点及原因.结果表明,副高北上与北方冷涡系统影响,在黑龙江省东、西部造成不同性质的降水.黑龙江省西部在冷涡系统影响下,系统不稳定,造成局地短时强降水；东部在副高外围水汽通道上,在哈尔滨南部地区冷暖空气配合、水汽辐合条件较好,造成暴雨.卫星云图上,西部冷涡中心以阵性对流天气降水为主,东部以连续的暖区降水为主.%The weather situation, physical conditions, satellites images and so on of a heavy precipitation process happened from July 20 to 21, 2010 in Northeast China were analyzed, the occurrence characteristics and causes of this rainstorm weather were studied. Results showed that, the interaction of northward-moving subtropical high with the northern cold vortex system produced different precipitation in East and West Heilongjiang Province. Under the influence of unstable cold vortex system, short-time heavy rainfall often happed in West Heilongjiang Province; East Heilongjiang was on the external vapor channel of subtropical high, the well coordination of cold and warm air and good moisture convergence conditions led to heavy rainfall in South Harbin. As seen in satellite images, west cold