Measurement report: TURBAN observation campaign combining street-level low-cost air quality sensors and meteorological profile measurements in Prague

IF 5.2 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES Atmospheric Chemistry and Physics Pub Date : 2024-07-04 DOI:10.5194/egusphere-2024-1222
Petra Bauerová, Josef Keder, Adriana Šindelářová, Ondřej Vlček, William Patiño, Jaroslav Resler, Pavel Krč, Jan Geletič, Hynek Řezníček, Martin Bureš, Kryštof Eben, Michal Belda, Jelena Radović, Vladimír Fuka, Radek Jareš, Igor Ezau
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Abstract

Abstract. Within the TURBAN project, a "Legerova campaign" focusing on air quality and meteorology in the traffic-loaded part of the Prague city (Czech Republic) was carried out from 30 May 2022 to 28 March 2023. The network comprised of 20 combined low-cost sensor (LCS) stations for NO2, O3, PM10 and PM2.5 concentrations, along with a mobile meteorological mast, a single-channel microwave radiometer and Doppler LIDAR for measurement of vertical temperature and wind profiles. Significant individual deviations of LCSs were detected during the 165 day initial field test of all units at the urban background Prague 4-Libuš reference station (coefficient of variation 17–28 %). Implementing the Multivariate Adaptive Regression Splines method for correction reduced the LCS inter-individual variability and improved correlation with reference monitors in all pollutants (R2 0.88–0.97). The LCSs' data drifts and ageing were checked by the double mass curve method for the entire measurement period. During the Legerova campaign, the highest NO2 concentrations were in traffic-loaded street canyons with continuous building blocks and several traffic lights. Aerosol pollution showed very little variation between the monitored streets. The highest PM10 and PM2.5 concentrations were recorded during temperature inversions and an episode involving pollution transported from a large forest fire in northern Czech Republic in July 2022. This report provides valuable data to support the validation of various predictive models dealing with complex urban environment, such as microscale LES model PALM tested in the TURBAN project.
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测量报告:结合布拉格街道级低成本空气质量传感器和气象剖面测量的 TURBAN 观测活动
摘要在 TURBAN 项目范围内,2022 年 5 月 30 日至 2023 年 3 月 28 日开展了一项 "Legerova 行动",重点关注布拉格市(捷克共和国)交通繁忙地区的空气质量和气象。该网络由 20 个用于测量二氧化氮、臭氧、可吸入颗粒物(PM10)和可吸入颗粒物(PM2.5)浓度的组合式低成本传感器(LCS)站以及一个移动气象桅杆、一个单通道微波辐射计和用于测量垂直温度和风廓线的多普勒激光雷达组成。在布拉格 4-Libuš 城市背景参考站对所有设备进行了为期 165 天的初步实地测试(变异系数为 17-28%),发现 LCS 存在明显的个别偏差。采用多元自适应回归样条法进行校正降低了 LCS 的个体间变异性,并提高了与所有污染物参考监测仪的相关性(R2 0.88-0.97)。在整个测量期间,采用双质量曲线法检查了 LCS 的数据漂移和老化情况。在 Legerova 测量活动期间,二氧化氮浓度最高的地方是交通繁忙的街道峡谷,那里有连续的建筑街区和多个交通信号灯。气溶胶污染在受监测街道之间的差异很小。最高的 PM10 和 PM2.5 浓度出现在气温倒伏期间,以及 2022 年 7 月捷克共和国北部一场大规模森林火灾造成的污染期间。该报告提供了宝贵的数据,有助于验证各种处理复杂城市环境的预测模型,例如在 TURBAN 项目中测试的微尺度 LES 模型 PALM。
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来源期刊
Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics 地学-气象与大气科学
CiteScore
10.70
自引率
20.60%
发文量
702
审稿时长
6 months
期刊介绍: Atmospheric Chemistry and Physics (ACP) is a not-for-profit international scientific journal dedicated to the publication and public discussion of high-quality studies investigating the Earth''s atmosphere and the underlying chemical and physical processes. It covers the altitude range from the land and ocean surface up to the turbopause, including the troposphere, stratosphere, and mesosphere. The main subject areas comprise atmospheric modelling, field measurements, remote sensing, and laboratory studies of gases, aerosols, clouds and precipitation, isotopes, radiation, dynamics, biosphere interactions, and hydrosphere interactions. The journal scope is focused on studies with general implications for atmospheric science rather than investigations that are primarily of local or technical interest.
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