Method for classification of weather situation, method and device for forecasting air pollution situation
An air pollution and weather technology, applied in forecasting, data processing applications, instruments, etc., can solve the problems that the differences in the distribution of meteorological fields in the local space are not considered, and cannot represent the sample situation, etc., to achieve enhanced practicability and increased similarity , The effect of accurate typing results
Active Publication Date: 2020-12-04
北京中科三清环境技术有限公司 +1
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[0003] In the prior art, the K-means clustering method is often used to classify the weather situation, and the random method is used to generate the initial cluster center when selecting the initial cluster center. The initial cluster center has very important significance in the subsequent clustering algorithm. The current The cluster center generated by the random method cannot represent the sample situation
The measurement method used to judge the similarity between the sample and the cluster center in the clustering algorithm considers the overall similarity between the two, while in the existing research on the classification of the weather situation, the difference in the distribution of the meteorological field in the local space is not considered. consider
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[0052] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0053] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as commonly understood by those of ordinary skill in the art to which this application belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have m...
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The application discloses a classification method of weather situation, a prediction method and device of air pollution situation. The typing method of the weather situation comprises: selecting the typing factor of the typing area from the historical meteorological data as the data to be clustered; filtering the data to be clustered; clustering the filtered data to be clustered, A classification model is established; the classification model is iteratively updated; and the classification model is used to classify the forecast weather situation. The classification method of the weather situation provided by this application can effectively reduce the clustering error by determining the initial cluster center in a more reasonable way, the similarity between types increases, and the difference between different types is obvious; the similarity measurement index is improved, and by calculating The similarity of each row and each column fully considers the local differences and fits the distribution characteristics of the meteorological field. The practicability of the typing results is enhanced and the typing results are accurate.
Description
technical field [0001] The present application relates to the technical field of environmental monitoring, in particular to a classification method for weather conditions, a method and a device for predicting air pollution conditions. Background technique [0002] Pollution events are closely related to large-scale weather conditions. The evolution of weather conditions determines the spatial distribution and time-varying characteristics of pollutants, and directly affects the duration and degree of pollution processes. The analysis and summary of the pollution weather situation is very important for understanding the characteristics of the weather system and the establishment of forecast ideas. Carrying out classification research on the pollution weather situation, identifying typical pollution weather situations, and analyzing the transmission and diffusion of pollutants under different weather types is very important for air quality early warning. Forecasting is importan...
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IPC IPC(8): G06K9/62G06Q10/04G06Q50/26
CPCG06Q10/04G06Q50/26G06F18/23211G06F18/22
Inventor 任华荣秦东明孙明生易志安李诗瑶马培翃
Owner 北京中科三清环境技术有限公司