托克逊空气质量变化特征与气象要素的关系

Characteristics of Air Quality Change and Its Relationship with Meteorological Factors of Tuokexun County

摘要: 本文通过分析托克逊县从2019年到2022年的空气质量监测资料以及相关气象数据，探讨该地区空气品质的特性及其与气象因素间的关联。调查结果表明，托克逊县的空气状况通常保持在良好的标准，PM_2.5以及臭氧为主要的污染来源。空气质量在不同季节存在显著差异，冬季的空气质量最差，其平均空气质量指数达到105。同时，优良空气的出现比例较少，而轻度和中度污染在这个季节频繁发生。夏季和秋季的空气状况都较好，差别不明显，空气质量指数(AQI)平均值分别为71和72。在过去的9月和10月，空气质量优良的天数比例达到了97%。空气质量受到温度、气压、湿度、风速和日照等多种因素影响。空气质量指数(AQI)与气压、风速峰值及两分钟风速平均值之间表现出正相关，而与温度、湿度和日照时数则呈负相关走势。

Abstract: This paper analyzes the characteristics of air quality in this area and its relationship with meteorological conditions, based on the air quality monitoring data of Tuokexun County from 2019 to 2022 and the meteorological data of the same period. The results showed that the air quality in Tuokexun County was mainly good, and PM_2.5 and O₃ were the main pollutants in the county. The seasonal difference of air quality is sharply. The air quality is the worst in winter, the average value of AQI is 105, and the excellent rate of air quality is low. Mild pollution and moderate pollution appear many times in winter. The air quality in summer and autumn was the best, and the difference was not significant. The average AQI was 71 and 72, respectively. The excellent and good rate of air quality in September and October reached 97 %. The air quality is affected by the changes of average temperature, average pressure, relative humidity, wind speed and sunshine. AQI is positively correlated with average pressure, maximum wind speed and 2-minute average wind speed, and negatively correlated with average temperature, relative humidity and sunshine hours.