摘要
利用常规气象资料,对2010年3月19～20日山西省一次罕见大风天气的天气形势及主要影响要素进行了综合分析。结果表明:高空不稳定小槽和地面冷锋是引发这次罕见大风的主要天气系统。高空急流、风速垂直切变、气压梯度、3 h变压、冷暖平流、散度场等要素对大风的发生起到了一定的作用。在综合分析大风形成物理机制的基础上,得出了大风天气的预报着眼点,为大风预报提供理论依据,以期提高大风天气的预报准确率,减轻大风天气对社会及人类造成的危害。
Bases on the conventional meteorological data,the weather situation and the impact of other major elements of a rare gale were comprehensively analyzed which was appeared during March 19-20 in 2010 in Shanxi Province.It was found that the unstable small groove upper and the surface cold front were the main weather systems which caused this rare windy.The jet stream,vertical wind shear,pressure gradient,3 h transformer,air advection,divergence and other factors on the occurrence of this strong wind had played a certain role.On the basis of comprehensive analysis of the physical mechanism drawn the focus of such strong winds forecast,provided a theoretical basis for the strong winds forecast in order to improve forecasting accuracy and reduce the hazards to the social and human.
出处
《安徽农业科学》
CAS
北大核心
2011年第34期21287-21289,21403,共4页
Journal of Anhui Agricultural Sciences
