鲁西南地区静稳天气特征及其与大气污染物的关系  

Stationary Weather Characteristics and Its Relationship with Air Pollutants in Southwest Shandong Province

作　　者：董宁[1] 赵京峰[1] 王晓默 DONG Ning;ZHAO Jingfeng;WANG Xiaomo(Meteorological Bureau of Jining,Jining 272000,China;Meteorological Bureau of Heze,Heze 273200,China)

机构地区：[1]济宁市气象局,山东济宁272000 [2]菏泽市气象局,山东菏泽273200

出　　处：《河南科技》2024年第4期116-121,共6页Henan Science and Technology

基　　金：山东省气象局青年科研基金项目“鲁西南地区静稳天气特征及其与大气污染的关系”(2017SDQN16);济宁市气象局气象科学技术研究项目(2019JNZL19)。

摘　　要：【目的】研究鲁西南地区静稳天气特征及其与主要污染物的关系。【方法】通过构建静稳天气综合指数,利用2014—2018年济宁、菏泽、枣庄三市的大气监测和气象资料,构建了鲁西南地区静稳天气指数(SWI),分析了SWI与空气质量指数(AQI)及PM_(2.5)浓度的关系,能较好地表征鲁西南地区大气对污染物的水平与垂直扩散及运输能力。【结果】济宁SWI与AQI相关系数为0.79,与PM_(2.5)浓度的相关系数为0.78;菏泽SWI与AQI相关系数为0.62,与PM_(2.5)浓度的相关系数为0.61;枣庄SWI与AQI相关系数为0.77,与PM_(2.5)浓度的相关系数为0.78。当SWI增大时,PM_(2.5)浓度与AQI值均增大;当SWI值减小时,PM_(2.5)浓度与AQI值均下降,其具备较好的对应关系。【结论】静稳天气指数的时间提前特征,说明静稳天气指数对下一日的空气质量具有一定的影响;静稳天气指数在空气质量发生转折时有较好的指示作用;静稳天气指数在一定程度上与大气污染程度的变化一致,且在一定范围内对分级空气质量有较好的指示意义。[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 meteorological 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 quality index(AQI)and PM_(2.5)concentration is analyzed,It can better characterize the horizontal and vertical diffusion and transportation capacity of pollutants in the atmosphere of southwestern Shandong.[Findings]The correlation coefficient between Jining SWI and AQI is 0.79,and the correlation coefficient with PM_(2.5)concentration is 0.78;The correlation coefficient between Heze SWI and AQI is 0.62,and the correlation coefficient with PM_(2.5)concentration is 0.61;The correlation coefficient between SWI and AQI in Zaozhuang is 0.77,and the correlation coefficient with PM_(2.5)concentration is 0.78.When SWI increases,both PM_(2.5)concentration and AQI value increase;When the SWI value decreases,both the PM_(2.5)concentration and AQI value decrease.[Conclusions]Indicating a good corresponding relationship The time advance characteristics of the Quiet Weather Index indicate that the Quiet Weather Index has a certain impact on the air quality of the next day;The calm weather index has a good indicating effect when air quality 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.

关 键 词：静稳指数(SWI) 空气质量指数(AQI) 大气污染物 

分 类 号：X51[环境科学与工程—环境工程]