摘要
利用常规资料、多普勒雷达和自动站资料,对2010年春末发生在河套地区的一次大雨天气过程进行物理成因分析。结果表明,极地冷涡不断分裂冷空气南下,促使高空槽强烈发展,为强降水的发生提供了动力条件。中高层西南气流与低层东南气流为强降水的发生提供水汽条件。逆温层和高能舌的存在为降雨的发生储备了潜在能量。多普勒雷达产品对降雨的强度、性质及能否出现冰雹和大风有较好指示作用。
Based on the conventional data,Doppler radar and automatic weather station data,the physical causes of heavy rain synoptic process that occurred in Hetao area were analyzed in late spring of 2010.The results showed that the polar cyclone split and cold air go down south,upper-level trough consuming develop and provided dynamic condition for the heavy rain.Mid and upper-level southwest air flow and low-level southeast air flow provided vapor conditions for heavy rain.The temperature inversion layer and high-energy tongue reserved potential energy for the heavy rain.The Product of Doppler radar had preferable indication to intensity,property of heavy rain,also on appearance of hail and high wind.
出处
《内蒙古气象》
2011年第1期15-18,共4页
Meteorology Journal of Inner Mongolia
关键词
强降雨
环流背景
物理量
雷达产品
成因分析
severe Precipitation
circulation Background
physical quantity
product of Doppler radar
causes analysis
