摘要
对2010年9月4—5日哈密地区一次大降水天气过程的成因进行了分析,表明高低空环流形势的配合、对流层低层强烈辐合与高层强烈辐散、垂直上升运动以及"三股气流"的存在是其形成的重要机制,同时在哈密地区大降水天气短期预报着眼点方面获得了一些有益的启示:充分利用数值预报模式产品,对环流形势演变、各物理量场,尤其是产生降水的水汽、动力、不稳定能量3个宏观条件的物理量场充分细致分析,对降水预报有非常重要的指示意义。
The cause of a heavy precipitation process in Hami Region from 4 to 5 in September in 2010 was analyzed,the results showed that the cooperation of air circulation between high level and low level,the intensity convergence in low level and diverge in high,the ascending motion and the existence of ＇3 air flows＇ were important causes of this precipitation process,and some key points of heavy rainfall forecasting in Hami were found out,there was very important indication of rainfall forecasting that based on making the best of numerical forecast product,meticulous analysis about air circulation evolution,physical quantity field,especially water vapor,dynamic and unstable energy.
出处
《现代农业科技》
2011年第12期11-13,16,共4页
Modern Agricultural Science and Technology
关键词
大降水
成因
数值预报
预报着眼点
新疆哈密
heavy precipitation
cause
numerical forecast
the key point of forecasting
Hami Xinjiang
