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A method for forecasting changes in atmospheric PM2.5 concentrations in spring in Beijing based on atmospheric activities

A concentration change, atmospheric technology used in weather forecasting, meteorology, suspension and porous material analysis to improve precision and accuracy

Active Publication Date: 2021-08-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, people have found in actual use that only considering the influence of cyclones or anticyclones on PM2.5 still has a certain error rate and has certain defects in the accuracy of forecasting.

Method used

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  • A method for forecasting changes in atmospheric PM2.5 concentrations in spring in Beijing based on atmospheric activities
  • A method for forecasting changes in atmospheric PM2.5 concentrations in spring in Beijing based on atmospheric activities
  • A method for forecasting changes in atmospheric PM2.5 concentrations in spring in Beijing based on atmospheric activities

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Experimental program
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Effect test

Embodiment Construction

[0037] The present invention predicts according to the following steps:

[0038] 1), sample collection:

[0039] 1.1) Collect the annual observation data (P1, P2, P3...Pn) of Beijing's spring atmospheric PM2.5 concentration. The geographical coordinates of Beijing are 116.23 degrees east longitude and 39.54 degrees north latitude;

[0040] 1.2), collect and calculate the atmospheric cyclone wave value and anticyclone wave value of each grid point in the area around Beijing and the corresponding time of step 1.1), the area around Beijing is 70-150 degrees east longitude, 20-60 north latitude degree; assuming that there are X grid points in this area, then the cyclone wave value of the Xth grid point can be recorded as WX1, WX2, WX3...WXn, and the anticyclone wave value can be recorded as AX1, AX2, AX3...AXn ;

[0041] longitude lambda 0 , latitude Φ e The local anticyclonic wave at is defined as:

[0042]

[0043] A N ≥0, representing a northward anticyclonic wave;

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Abstract

A method for forecasting changes in atmospheric PM2.5 concentration in spring in Beijing based on atmospheric activities. The invention relates to the field of PM2.5 forecasting methods. A method for forecasting changes in Beijing's spring atmospheric PM2.5 concentration based on atmospheric activities is proposed with clear logic, orderly steps and high accuracy. Forecasting is carried out according to the following steps: 1), sample collection; 2), cyclone wave data processing; 3), anticyclone wave data processing; 4), regression model establishment; 5), PM2.5 concentration forecast. The present invention comprehensively considers the impact of cyclones and anticyclones on PM2.5 concentration during use, and predicts the change of Beijing's spring atmospheric PM2.5 concentration in the future from the perspective of atmospheric circulation, effectively improving the Beijing spring atmospheric PM2.5 concentration forecast precision and accuracy.

Description

technical field [0001] The invention relates to the field of PM2.5 forecasting methods, and relates to the improvement of the Beijing spring atmospheric PM2.5 forecasting method. Background technique [0002] With the acceleration of urbanization and industrialization, smog has occurred frequently in recent years, and the primary pollutants are mainly suspended dust particles (PM2. m 3 ), bring serious harm to environmental quality, human health and traffic safety, so it is particularly important to accurately forecast the change of PM2.5 concentration. [0003] In this regard, the applicant applied for a Chinese invention patent application titled "A Method for Predicting Changes in Beijing's Winter Atmospheric PM2.5 Concentration" with the application number "201710484048.8" on June 23, 2017. On August 16, 2017, a Chinese invention patent application titled "A Prediction Method for Changes in Atmospheric PM2.5 Concentration" and application number "201710700302.3" was fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01W1/10G01N15/06
CPCG01N15/06G01W1/10
Inventor 王叶李书一林嘉希
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS