Economical portable sensor based hybrid monitoring for high-resolution air pollution mapping at an urban hotspot

IF 2.9 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Air Quality Atmosphere and Health Pub Date : 2024-05-29 DOI:10.1007/s11869-024-01589-0

Sunil Gulia, Prachi Goyal, Swapnil Swapnil, Heena Chauhan, Sanjeev Kumar Goyal

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Abstract

Urban areas in developing countries are facing challenges in air quality management due to high spatio-temporal variations in emission sources. This complexity requires innovative ways of assessment and management of air quality within the city. The present work provides a roadmap for hybrid monitoring-based air quality assessment and local air quality management plan (LAMP) for urban hotspot. In this study, fixed and mobile economical portable sensors (EPS) are deployed around a continuous ambient air quality monitoring station (CAAQMS) to assess the trends in air quality of the area. The pre-evaluated EPS are used to accurately capture the hyperlocal variations in the pollution level around an expensive regulatory monitoring station in Delhi, India. The micro-meteorology around the CAAQMS is also taken into account by fixing additional weather stations in different directions. The findings indicate high monthly variations in PM_2.5 (160-201 µg/m³) and NO₂ (41–56 µg/m³) concentrations within a small 2 km radial area around a CAAQMS. The polarplot analysis indicates that local sources are responsible for pollution level. Based on correlation analysis, PM_2.5 dispersion around CAAQMS is correlated well with relative humidity (RH) (r² = 0.58). It is also observed that green area enhance RH and reduce ambient temperature which ultimately influences the pollutant dispersion. This robust assessment of air quality variations at micro scale brings the need for designing of effective and efficient mitigation measures at the local level for hotspots.

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基于混合监测的经济型便携式传感器，用于绘制城市热点地区的高分辨率空气污染地图

由于排放源的时空变化大，发展中国家的城市地区正面临着空气质量管理的挑战。这种复杂性要求采用创新方法来评估和管理城市内的空气质量。本研究为城市热点地区基于混合监测的空气质量评估和地方空气质量管理计划（LAMP）提供了路线图。在这项研究中，固定和移动经济便携式传感器（EPS）被部署在连续环境空气质量监测站（CAAQMS）周围，以评估该地区的空气质量趋势。预先评估的 EPS 用于准确捕捉印度德里一个昂贵的监管监测站周围超局部污染水平的变化。此外，通过在不同方向增设气象站，还考虑到了 CAAQMS 周围的微观气象。研究结果表明，在 CAAQMS 周围 2 公里的狭小径向区域内，PM2.5（160-201 微克/立方米）和 NO2（41-56 微克/立方米）浓度的月变化很大。极坐标图分析表明，污染水平是由本地污染源造成的。根据相关性分析，CAAQMS 周围的 PM2.5 扩散与相对湿度（RH）有很好的相关性（r2 = 0.58）。还可以观察到，绿地提高了相对湿度，降低了环境温度，最终影响了污染物的扩散。这种在微观尺度上对空气质量变化的可靠评估，为在地方层面上针对热点地区设计有效和高效的缓解措施提供了依据。

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来源期刊

Air Quality Atmosphere and Health ENVIRONMENTAL SCIENCES-

CiteScore

8.80

自引率

2.00%

发文量

146

审稿时长

>12 weeks

期刊介绍： Air Quality, Atmosphere, and Health is a multidisciplinary journal which, by its very name, illustrates the broad range of work it publishes and which focuses on atmospheric consequences of human activities and their implications for human and ecological health. It offers research papers, critical literature reviews and commentaries, as well as special issues devoted to topical subjects or themes. International in scope, the journal presents papers that inform and stimulate a global readership, as the topic addressed are global in their import. Consequently, we do not encourage submission of papers involving local data that relate to local problems. Unless they demonstrate wide applicability, these are better submitted to national or regional journals. Air Quality, Atmosphere & Health addresses such topics as acid precipitation; airborne particulate matter; air quality monitoring and management; exposure assessment; risk assessment; indoor air quality; atmospheric chemistry; atmospheric modeling and prediction; air pollution climatology; climate change and air quality; air pollution measurement; atmospheric impact assessment; forest-fire emissions; atmospheric science; greenhouse gases; health and ecological effects; clean air technology; regional and global change and satellite measurements. This journal benefits a diverse audience of researchers, public health officials and policy makers addressing problems that call for solutions based in evidence from atmospheric and exposure assessment scientists, epidemiologists, and risk assessors. Publication in the journal affords the opportunity to reach beyond defined disciplinary niches to this broader readership.