湖南省14个市级城市空气质量指数的分布特征及其与气象因素的关系研究  

The Distribution Characteristics of Air QualityIndex and Its Relationship with Meteorological Factors in 14 Cities of Hunan

作　　者：龙晓琴 曹珮 Long Xiao-qin(Hunan Meteorological Service Center,Changsha,Hunan 410118)

机构地区：[1]湖南省气象服务中心,湖南长沙410118

出　　处：《农业灾害研究》2023年第4期73-75,88,共4页Journal of Agricultural Catastrophology

摘　　要：利用中国气象局气象数据统一接口端(天擎)提供的2019—2021年地面日值资料和湖南省环境气象一体化业务平台提供的空气质量数据,利用相关分析方法对湖南省14个地市的空气质量指数(AQI)进行了分析。结果表明:2019—2021年湖南省东部地市的AQI值普遍高于湖南省西部和南部地市。湘西州和张家界的AQI值基本最低,AQI高值区分布在长株潭一带。春季和夏季AQI值最低,冬季升到最高值,冬季过后AQI值又逐渐降低。湖南省14个地市的空气质量污染天数最多的是长沙,其空气质量在湖南省最差;空气质量污染天数最低的是湘西州,空气质量整体最好。与2019年相比,2020年和2021年的年均污染天数减少。相对湿度、降水量、平均水汽压、本站气压和风速与长沙市AQI密切相关,并通过99%显著性检验,除了气压呈正相关外,其他均呈负相关关系。Using the 2019-20212021 data provided by the unified interface for China Meteorological Administration Meteorological Data(Tianqing)and the air quality data provided by the Hunan environmentmeteorology integration business platform,the air quality index(AQI)of 14 cities in Hunan province was analyzed by correlation analysis method.The results showed that the AQI values in the eastern 2021 of Hunan Province were generally higher than those in the western and southern parts of the province from 2019 to 2019.The AQI values in Xiangxi Tujia and Miao Autonomous Prefecture and Zhangjiajie were the lowest,and the highest AQI values were found in the chang-zhu-tan area.The AQI value in spring and summer was the lowest,and it rose to the highest in winter,and then decreased gradually after winter.Changsha had the highest number of days of air pollution in the province,while Xiangxi Tujia and Miao Autonomous Prefecture had the lowest number of days of air pollution and had the best overall air quality.Compared with 2019,the average number of pollution days in 2020 and 2021 decreased.Relative humidity,precipitation,average water vapor pressure,air pressure and wind speed of the station are closely related to the AQI of air quality in Changsha,and through the 99%significance test,except for the positive correlation of air pressure,others are negatively correlated.

关 键 词：空气质量指数 相关分析 长沙市 

分 类 号：X51[环境科学与工程—环境工程]