Air heavy pollution case judging method based on weather classification and meteorological element clustering

A technology of meteorological elements and discrimination methods, applied in data processing applications, predictions, calculations, etc., can solve problems such as inability to perform automatic calculations, and achieve the effects of improving operationalization, accuracy, and applicability

Active Publication Date: 2017-01-18
BEIJING MUNICIPAL ENVIRONMENTAL MONITORING CENT
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Problems solved by technology

The traditional weather classification is mainly aimed at weather conditions that are not conducive to the diffusion of pollutants, and for the pollution process, it cannot be automatically calculated, and manual judgment is required

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  • Air heavy pollution case judging method based on weather classification and meteorological element clustering
  • Air heavy pollution case judging method based on weather classification and meteorological element clustering
  • Air heavy pollution case judging method based on weather classification and meteorological element clustering

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0018] The invention discloses a method for discriminating heavy air pollution cases based on weather classification and clustering of meteorological elements, using historical data of meteorological elements and monitored PM 2.5 Hourly data, from the perspective of meteorology that affects the spread of air pollution, has a significant impact on PM 2.5 Concentration distribution of the main weather systems and meteorological elements for classification research, combined with the backward trajectory model, innovatively established weather classification and pollutant source analysis algorithms; The typical weather situation of polluted weather in the same season finds similar cases to serve the air quality forecast.

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Abstract

An air heavy pollution case judging method based on weather classification and meteorological element clustering comprises the following steps: classifying main weather systems and meteorological elements affecting PM2.5 concentration distribution from a meteorological point of view of factors influencing air pollution diffusion based on historical data of meteorological elements and monitored PM2.5 hourly data, and innovatively establishing a weather classification and pollutant source analysis algorithm based on a backward track pattern; and on the basis of the numerical WRF simulation result, looking for cases similar to typical weather situations of pollution weather in the same season in the history to serve for air quality forecast. A weather classification method and a numerical calculation simulation method are combined, which improves the accuracy of forecast results and reasonably avoids abnormality in numerical calculation results; an automatic classification similarity forecast method is built, which makes air quality forecast more business-oriented; and the cause and source of heavy pollution can be analyzed, and the applicability of the algorithm is improved greatly.

Description

technical field [0001] The invention relates to the field of atmospheric environment monitoring, in particular to a method for discriminating heavy air pollution cases based on weather classification and clustering of meteorological elements. Background technique [0002] The transmission and diffusion of air pollutants are driven by weather, and weather types are closely related to air pollution. It is of great significance to carry out related research on weather types in different regions. Weather classification refers to the analysis of historical weather maps to study and summarize the distribution characteristics of weather systems corresponding to various types of weather, which can be used as a reference when forecasting air quality. A comprehensive understanding of the types of pollution weather in Beijing can provide a reliable basis for air quality forecasting. The traditional weather classification is mainly aimed at weather conditions that are not conducive to ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04
Inventor 程念亮李云婷张大伟闫贺王步英崔继宪潘锦秀
Owner BEIJING MUNICIPAL ENVIRONMENTAL MONITORING CENT
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