自贡市城区MAIAC AOD和PM2.5时空特征及气象因素分析

doi:10.14088/j.cnki.issn0439-8114.2022.21.007

湖北农业科学 ›› 2022, Vol. 61 ›› Issue (21): 39-44.doi: 10.14088/j.cnki.issn0439-8114.2022.21.007

自贡市城区MAIAC AOD和PM2.5时空特征及气象因素分析

王玲玲^1,2, 陈婷^2,3, 邹长武^2,3, 罗伟^1,2

1.自贡市气象局,四川自贡 643000;
2.高原与盆地暴雨旱涝灾害四川省重点实验室,成都 610072;
3.成都信息工程大学,成都 610103

收稿日期:2021-10-28 出版日期:2022-11-10 发布日期:2022-12-10
作者简介:王玲玲（1986-）,女,山东曹县人,工程师,硕士,主要从事大气污染影响评价等方面研究,（电话）13629027662（电子信箱）serena0612@foxmail.com。
基金资助:
国家自然科学基金面上项目（41471305）; 高原与盆地暴雨旱涝灾害四川省重点实验室科技发展基金项目（SCQXKJQN202209）; 四川省科技厅重点研发项目（2018SZ0293）; 自贡市科学技术局软科学项目（2019RKX01）

Spatio-temporal characteristics and meteorological influencing factors of MAIAC AOD and PM2.5 in Zigong City

WANG Ling-ling^1,2, CHEN Ting^2,3, ZOU Chang-wu^2,3, LUO Wei^1,2

1. Zigong Meteorological Bureau, Zigong 643000, Sichuan, China;
2. Sichuan Key Laboratory of Heavy Rain and Drought-Flood Disasters in Plateau and Basin, Chengdu 610072, China;
3. Chengdu University of Information Technology, Chengdu 610103, China

Received:2021-10-28 Online:2022-11-10 Published:2022-12-10

摘要/Abstract

摘要： 为研究四川省自贡市城区PM2.5浓度[ρ（PM2.5）]时空污染特征及其与气象条件的关系,选取2014—2019年逐日国控站点空气质量监测数据以及基于MODIS的MCD19A2产品数据提取的研究区同期逐日气溶胶光学厚度（AOD）,分别进行时空特征分析,并对气温、气压、风向、风速、降雨量、相对湿度等气象参数与ρ（PM2.5）的相关性进行分析。结果表明,自贡市城区ρ（PM2.5）呈春秋冬季高、夏季低的时间特征,月尺度浓度大值期主要在1月、2月和12月,空间上则表现为工业生产总值高、交通运输频繁、人口较为密集以及受上风向污染源传输影响的大安区、高新区较高;AOD年均大值区主要在研究区中部偏东偏南部,2014年、2017年大部分区域以及2015年中部偏东区域气溶胶污染相对严重,2016年污染较轻,2018年和2019年污染有显著改善;自贡市城区ρ（PM2.5）与四季的降雨量、春秋冬季的风速、夏冬季的相对湿度表现出较高的负相关性,且在春夏冬季随气温升高和气压降低而增大;自贡市城区非夏季风向以东北风为主,ρ（PM2.5）超标时的风向多为偏东北风和东南风,表明上风向污染源的输入使得ρ（PM2.5）超标。

关键词: 监测数据, PM2.5浓度, 气溶胶光学厚度, 气象要素, 时空特征, 自贡市

Abstract: In order to study the characteristics of air pollution in Zigong City and its relationship with meteorological conditions, the spatial and temporal characteristics were investigated based on the daily air quality monitoring data at state control stations from 2014 to 2019 and the aerosol optical depth （AOD） extracted from the secondary product data MCD19A2 of MODIS. And correlations between temperature, atmospheric pressure, wind speed, direction, rainfall, relative humidity and PM2.5 concentration[ρ （PM2.5）] were analyzed. The results showed that ρ （PM2.5） in Zigong City was high in spring, autumn and winter, and low in summer; the maximum periods of monthly scale ρ （PM2.5） were mainly in January, February and December, ρ （PM2.5） was high in Da̕an and High-tech Zone with high gross industrial products, frequent transportation, dense population and affected by the transmission of upwind pollution sources. The annual average large value of AOD was mainly in the southeast of the central part of the study area. Aerosol pollution was relatively serious all areas in 2014, most areas in 2017, and in the east-central part in 2015, the pollution was lighter in 2016, and the pollution was significant improve in 2018 and 2019. The ρ （PM2.5） showed a high negative correlation with rainfall, wind speed in spring, autumn and winter, and relative humidity in summer, and ρ （PM2.5） increased as the temperature increased and the air pressure decreased in spring, summer and winter. The wind direction in the non-summer season was mainly northeast, whilst the ρ （PM2.5） exceeding the standard mostly happened under northeast and southeast wind, indicating that the input of the upper wind pollution source would make ρ （PM2.5） exceed the standard.

Key words: monitoring data, PM2.5 concentration, aerosol optical thickness, meteorological elements, spatial-temporal characteristics, Zigong City

中图分类号:

X513

王玲玲, 陈婷, 邹长武, 罗伟. 自贡市城区MAIAC AOD和PM2.5时空特征及气象因素分析[J]. 湖北农业科学, 2022, 61(21): 39-44.

WANG Ling-ling, CHEN Ting, ZOU Chang-wu, LUO Wei. Spatio-temporal characteristics and meteorological influencing factors of MAIAC AOD and PM2.5 in Zigong City[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(21): 39-44.

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自贡市城区MAIAC AOD和PM2.5时空特征及气象因素分析

Spatio-temporal characteristics and meteorological influencing factors of MAIAC AOD and PM2.5 in Zigong City

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