Method and system for identifying atmospheric pollution transmission key nodes based on complex network

A complex network and key transmission technology, applied in the field of identification of key nodes of air pollution transmission, can solve problems such as lack of theoretical basis, low connection accuracy, and non-representative
CN111666646AActive Publication Date: 2020-09-15上海市环境监测中心
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
上海市环境监测中心
Publication Date
2020-09-15

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Abstract

The invention provides a method and system for identifying atmospheric pollution transmission key nodes based on a complex network. The method comprises the following steps of: gridding and abstracting a preset area into the complex network; an HYSPLIT model outputs the flow of the airflow track in a preset area to obtain an adjacent matrix of the airflow track weight; a pollutant concentration interpolation method is adopted to obtain an adjacent matrix of a pollution transmission weight according to the pollutant concentration of the atmospheric pollutant monitoring point position in the preset area; the adjacency matrix of the pollution transmission weight is added to the adjacency matrix of the airflow track weight to obtain an adjacency matrix of the airflow track weight and the pollution transmission weight; an in-degree strength value and an out-degree strength value of each node are calculated by utilizing an improved PageRank algorithm; and regional pollution and governance key points are identified according to the in-degree intensity value and the out-degree intensity value. According to the method, the nodes are established after the specific area is gridded, and the specific area is averagely and comprehensively abstracted, and then complex network analysis is carried out, and the method is comprehensive and accurate.
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Description

technical field

[0001] The present invention relates to the field of air pollution analysis, in particular, to an identification method and system for key nodes of air pollution transmission based on a complex network, and more specifically, to an identification model for key nodes of regional air pollution transmission based on a complex network . Background technique

[0002] With the continuous development of our country's economy, the air quality problem in most parts of our country is also becoming more and more serious. Severe air pollution has had a serious impact on people's bodies and lives; monitoring air pollution in different regions is of great significance for air pollution control.

[0003] There are many applications of using the PageRank algorithm to calculate key nodes in Internet networks, public transportation and other fields, but there are very few applications in the calculation of key nodes in the diffusion of air pollutants and regional air pollutio...

Claims

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