Auto-analysis Algorithm Research Of The 500hPa Level Jet Stream

In order to meet the development demand of meteorological service,improve the service capability of meteorological service and combine the development situation of modern weather forecasting business to further explore the automatic analysis algorithm and technology of high altitude weather system.The 500 hPa high weather system is located in the middle troposphere is particularly important for meteorological disaster prevention and mitigation,based on the meteorological department manual analysis on the experience of the automatic analysis algorithm for 500 hPa level jet stream research a set of scientific and feasible,to change the status quo of meteorological practitioners with the help of computer artificial drawing jet stream.To further improve the efficiency of the meteorological department’s overall business analysis,to a certain extent,improve the level of forecasting and early warning business automation.Learn from previous work,the contents of this paper are as follows:Firstly,the mathematic model is constructed according to the problems to be solved in this paper and the algorithm flow chart is generated.The data pretreatment of MICAPS 11 th type grid field vector data commonly used in the meteorological department business platform is carried out according to the 500 hPa jet manned by the National Meteorological Center The technical requirements of the analysis identify the area of jet stream.In the region of jet stream,the flow field tracking algorithm is used to track the rapid current node.Secondly,based on the basic methods of related disciplines such as weather method,dynamic method,computer graphics and computer image processing technology,the unit vector method and the latitude and longitude weighted average method are put forward under the premise of following the theory of weather dynamics.An algorithm for automatic analysis of jet system.The algorithm is studied by using the steps such as nodal segmentation,jet node calculation,noise node removal and rapid flow drawing to solve many key problems,and finally realize the automatic analysis of 500 hPa jet stream.Finally,the MICAPS 11 th grid vector data from 2013 to 2015 were selected,and use the method proposed in this paper to carry out the rapid analysis experiment of the high-altitude weather system.The results of this paper are compared with those of the weather forecasters Quantitative analysis and calculation.The results of the study have reached the goal of research,compared with the way of meteorological personnel artificial drawing,improve the efficiency and enhance the level of meteorological field of automation analysis.