{"title":"调查光化学的作用以及区域和地方因素对城市和郊区气态污染物(一氧化氮、二氧化氮、臭氧、一氧化碳和二氧化硫)浓度的影响","authors":"Sofia Eirini Chatoutsidou, Mihalis Lazaridis","doi":"10.1016/j.apr.2024.102322","DOIUrl":null,"url":null,"abstract":"<div><div>Gaseous pollutant concentrations were monitored for one year in urban (NO, NO<sub>2</sub>, O<sub>3</sub>, CO, and SO<sub>2</sub>) and suburban (NO, NO<sub>2</sub>, and O<sub>3</sub>) sites. Common characteristics were identified at both sites, such as higher concentrations during typical winter months for all pollutants except O<sub>3</sub>. Increased NO, NO<sub>2</sub>, CO and SO<sub>2</sub> concentrations during wintertime were linked to residential heating emissions, with pairwise correlations showing CO as marker for the study site. O<sub>3</sub> production was lower in wintertime but higher in summertime at both sites based on its seasonal cycle and the impact of sunlight. Furthermore, diurnal variations showed that traffic emissions during rush hours most profoundly affected CO and NO. Nevertheless, NO<sub>x</sub> were characteristically higher at the urban site based on the burdened environment, whereas O<sub>3</sub> was higher at the suburban site due to the lower destruction rates. O<sub>3</sub> was the dominant oxidant at both sites, with a linear regression between OX and NO<sub>x</sub> revealing a negative relationship. This observation suggested a dominant regional contribution to oxidant concentrations. In addition, abnormally high O<sub>3</sub> concentrations in relation to the season were reported for the first time at the study sites. Elevated concentrations were measured in parallel with Sahara dust events indicating noteworthy atmospheric conditions that require further assessment. Other O<sub>3</sub> burdened periods were driven by regional transport of polluted plumes from the northeast. Lastly, nocturnal increases in O<sub>3</sub> were observed and associated with enhanced vertical mixing.</div></div>","PeriodicalId":8604,"journal":{"name":"Atmospheric Pollution Research","volume":"15 12","pages":"Article 102322"},"PeriodicalIF":3.9000,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigating the role of photochemistry and impact of regional and local contributions on gaseous pollutant concentrations (NO, NO2, O3, CO, and SO2) at urban and suburban sites\",\"authors\":\"Sofia Eirini Chatoutsidou, Mihalis Lazaridis\",\"doi\":\"10.1016/j.apr.2024.102322\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Gaseous pollutant concentrations were monitored for one year in urban (NO, NO<sub>2</sub>, O<sub>3</sub>, CO, and SO<sub>2</sub>) and suburban (NO, NO<sub>2</sub>, and O<sub>3</sub>) sites. Common characteristics were identified at both sites, such as higher concentrations during typical winter months for all pollutants except O<sub>3</sub>. Increased NO, NO<sub>2</sub>, CO and SO<sub>2</sub> concentrations during wintertime were linked to residential heating emissions, with pairwise correlations showing CO as marker for the study site. O<sub>3</sub> production was lower in wintertime but higher in summertime at both sites based on its seasonal cycle and the impact of sunlight. Furthermore, diurnal variations showed that traffic emissions during rush hours most profoundly affected CO and NO. Nevertheless, NO<sub>x</sub> were characteristically higher at the urban site based on the burdened environment, whereas O<sub>3</sub> was higher at the suburban site due to the lower destruction rates. O<sub>3</sub> was the dominant oxidant at both sites, with a linear regression between OX and NO<sub>x</sub> revealing a negative relationship. This observation suggested a dominant regional contribution to oxidant concentrations. In addition, abnormally high O<sub>3</sub> concentrations in relation to the season were reported for the first time at the study sites. Elevated concentrations were measured in parallel with Sahara dust events indicating noteworthy atmospheric conditions that require further assessment. Other O<sub>3</sub> burdened periods were driven by regional transport of polluted plumes from the northeast. Lastly, nocturnal increases in O<sub>3</sub> were observed and associated with enhanced vertical mixing.</div></div>\",\"PeriodicalId\":8604,\"journal\":{\"name\":\"Atmospheric Pollution Research\",\"volume\":\"15 12\",\"pages\":\"Article 102322\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2024-09-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Atmospheric Pollution Research\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1309104224002873\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Atmospheric Pollution Research","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1309104224002873","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Investigating the role of photochemistry and impact of regional and local contributions on gaseous pollutant concentrations (NO, NO2, O3, CO, and SO2) at urban and suburban sites
Gaseous pollutant concentrations were monitored for one year in urban (NO, NO2, O3, CO, and SO2) and suburban (NO, NO2, and O3) sites. Common characteristics were identified at both sites, such as higher concentrations during typical winter months for all pollutants except O3. Increased NO, NO2, CO and SO2 concentrations during wintertime were linked to residential heating emissions, with pairwise correlations showing CO as marker for the study site. O3 production was lower in wintertime but higher in summertime at both sites based on its seasonal cycle and the impact of sunlight. Furthermore, diurnal variations showed that traffic emissions during rush hours most profoundly affected CO and NO. Nevertheless, NOx were characteristically higher at the urban site based on the burdened environment, whereas O3 was higher at the suburban site due to the lower destruction rates. O3 was the dominant oxidant at both sites, with a linear regression between OX and NOx revealing a negative relationship. This observation suggested a dominant regional contribution to oxidant concentrations. In addition, abnormally high O3 concentrations in relation to the season were reported for the first time at the study sites. Elevated concentrations were measured in parallel with Sahara dust events indicating noteworthy atmospheric conditions that require further assessment. Other O3 burdened periods were driven by regional transport of polluted plumes from the northeast. Lastly, nocturnal increases in O3 were observed and associated with enhanced vertical mixing.
期刊介绍:
Atmospheric Pollution Research (APR) is an international journal designed for the publication of articles on air pollution. Papers should present novel experimental results, theory and modeling of air pollution on local, regional, or global scales. Areas covered are research on inorganic, organic, and persistent organic air pollutants, air quality monitoring, air quality management, atmospheric dispersion and transport, air-surface (soil, water, and vegetation) exchange of pollutants, dry and wet deposition, indoor air quality, exposure assessment, health effects, satellite measurements, natural emissions, atmospheric chemistry, greenhouse gases, and effects on climate change.