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Newly-added PM2.5 fixed monitoring station site selection method based on space-time Kriging interpolation

A kriging interpolation and monitoring site technology, which is applied in forecasting, special data processing applications, data processing applications, etc., can solve the problems of large monitoring errors, achieve the effects of improving accuracy, reducing the variance of estimation errors, and improving interpolation accuracy

Inactive Publication Date: 2020-02-07
EAST CHINA UNIV OF TECH
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Problems solved by technology

[0006] In view of this, the present invention provides a new PM2.5 fixed monitoring site site selection method based on space-time Kriging interpolation, to solve or at least partially solve the technology of large monitoring errors existing in the methods in the prior art question

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  • Newly-added PM2.5 fixed monitoring station site selection method based on space-time Kriging interpolation
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  • Newly-added PM2.5 fixed monitoring station site selection method based on space-time Kriging interpolation

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Embodiment Construction

[0057] The purpose of the present invention is to solve the technical problem that the number of fixed monitoring stations in the city is limited and the distribution is not scientific. If the analysis is only performed on the basis of the data returned by these stations, a large error may be caused to the analysis results. A new PM2.5 fixed monitoring station site selection method based on space-time kriging interpolation, so as to achieve the purpose of improving the monitoring accuracy.

[0058] In order to achieve the above object, the main idea of ​​the present invention is as follows:

[0059] Firstly, the observation data of PM2.5 stations in the preset research area are screened to screen out the PM2.5 concentration data of the preset group; The statistics of the distance and the division of the grid in the research area, each grid is regarded as a candidate site; then for each set of PM2. The variation function model fits the time variation function and the space var...

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Abstract

The invention discloses a newly-added PM2.5 fixed monitoring station site selection method based on space-time Kriging interpolation. The newly-added PM2.5 fixed monitoring station site selection method comprises the steps: screening PM2.5 station observation data of a preset research region, and obtaining a preset group of PM2.5 concentration data through screening; preprocessing the screened preset group of PM2.5 concentration data, counting the time distance and the space distance between stations, dividing grids of a research area, taking each grid as an alternative station, calculating atime variation function and a space variation function, and establishing a product model to calculate a space-time variation function; calculating the Kriging estimation error variance of each grid, calculating the Kriging estimation error variances of all alternative grid sites in the research area, grading and comparing the Kriging estimation error variances; and calculating the overall regionalvariance after the alternative grid sites of different levels are newly added. According to the newly-added PM2.5 fixed monitoring station site selection method, site selection optimization is carried out from the perspective of newly added fixed monitoring stations, and more accurate PM2.5 concentration information is estimated by using fewer monitoring stations.

Description

technical field [0001] The invention relates to the technical field of spatio-temporal analysis of geographic information, in particular to a site selection method for new PM2.5 fixed monitoring stations based on spatio-temporal kriging interpolation. Background technique [0002] When monitoring and managing the PM2.5 concentration near the ground in the city, it is necessary to obtain and analyze the PM2.5 concentration data through ground monitoring stations, so as to provide a reliable basis for PM2.5 concentration control and management. However, with the increasingly prominent contradictions of atmospheric environmental protection and the urgent need for PM2.5 research, the shortcomings of the monitoring station network itself are increasingly revealed. Under ideal conditions, the more monitoring points and the wider the distribution, the more complete the information reflected, but the layout, operation and maintenance of atmospheric monitoring stations require a lot ...

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Application Information

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IPC IPC(8): G06Q10/04G06F16/29
CPCG06Q10/043G06F16/29
Inventor 李小龙张天昊程朋根谭永滨
Owner EAST CHINA UNIV OF TECH
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