Stationary Weather Characteristics and Its Relationship with Air Pollutants in Southwest Shandong Province
[Purposes]This paper aims to study the characteristics of calm and stable weather in the southwestern region of Shandong and its main relationship with major pollutants.[Methods]This article constructs a comprehensive index of calm and stable weather,and uses atmospheric monitoring and me-teorological data from Jining,Heze,and Zaozhuang from 2014 to 2018 to construct a calm and stable weather index(SWI)in the southwestern region of Shandong.The relationship between SWI and air qual-ity index(AQI)and PM2.5 concentration is analyzed,It can better characterize the horizontal and vertical diffusion and transportation capacity of pollutants in the atmosphere of southwestern Shandong.[Find-ings]The correlation coefficient between Jining SWI and AQI is 0.79,and the correlation coefficient with PM2.5 concentration is 0.78;The correlation coefficient between Heze SWI and AQI is 0.62,and the correlation coefficient with PM2.5 concentration is 0.61;The correlation coefficient between SWI and AQI in Zaozhuang is 0.77,and the correlation coefficient with PM2.5 concentration is 0.78.When SWI increases,both PM2.5 concentration and AQI value increase;When the SWI value decreases,both the PM2.5 concentra-tion and AQI value decrease.[Conclusions]Indicating a good corresponding relationship The time ad-vance characteristics of the Quiet Weather Index indicate that the Quiet Weather Index has a certain im-pact on the air quality of the next day;The calm weather index has a good indicating effect when air qual-ity changes The static and stable weather index is consistent with the changes in atmospheric pollution to a certain extent,and within a certain range,it has good indicative significance for grading air quality.
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