景德镇市空气质量特点及环境气象条件评估

Characteristics of air quality and evaluation of environmental meteorological conditions in Jingdezhen City

为了研究景德镇市空气质量的特点及与环境气象条件的关系,文章使用空气质量监测数据、气象监测数据,采用天气学、环境气象学原理与分析方法,分析了景德镇市2015-2023年的空气质量,并对2024年1月、2023年1月的环境气象条件进行了评估。结果表明:景德镇市空气质量逐年向好,年空气质量指数优良率达90%以上,超标率为0.3%~9.6%;2024年1月景德镇市空气质量与2023年同期相比上升3.45个百分点、PM_(2.5)质量浓度同比下降6.44%、PM_(10)质量浓度同比下降21.52%,主要原因是降水偏多、气温偏低、相对湿度偏大,大气扩散条件和雨洗条件同比偏好;通过气溶胶污染气象条件指数(PLAM)、PM_(2.5)气象条件评估指数(EMI)计算,表明2024年1月景德镇市的气象扩散条件优于2023年1月,景德镇市及周边地区排放量略有增加。希望研究结果能为景德镇市城市规划、旅游发展、气象服务提供参考。

In order to study the characteristics of air quality in Jingdezhen City and its relationship with environmental meteorological conditions,this article uses air quality monitoring data and meteorological monitoring data,adopts principles and analysis methods of meteorology and environmental meteorology,analyzes the air quality in Jingdezhen City from 2015 to 2023,and evaluates the environmental meteorological conditions in January 2024 and January 2023.The results show that the air quality in Jingdezhen City has been improving year by year,with an annual air quality index excellent rate of over 90%and a exceedance rate of 0.3%to 9.6%.In January 2024,the air quality in Jingdezhen City increased by 3.45 percentage points compared to the same period in 2023,the PM_(2.5) mass concentration decreased by 6.44%year-on-year,and the PM_(10) mass concentration decreased by 21.52%year-on-year.The main reasons were excessive precipitation,low temperature,high relative humidity,and preference for atmospheric diffusion and rain washing conditions year-on-year.According to the calculation of Parameters Linking Aerosol Pollution and Meteorology(PLAM)and Evaluation on meteorological condition index of PM_(2.5) pollution(EMI),it is shown that the meteorological diffusion conditions in Jingdezhen City in January 2024 are better than those in January 2023,and the emissions in Jingdezhen City and surrounding areas have slightly increased.It is hoped that the research results can provide reference for urban planning,tourism development,and meteorological services in Jingdezhen City.