Diurnal, Temporal and Spatial Variations of Main Air Pollutants Before and during Emergency Lockdown in the City of Novi Sad (Serbia)
| Autor: | Sonja Dmitrašinović, Maja Jovanović, Miloš D. Davidović, Milena Jovasevic-Stojanovic, Jelena Radonić |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Pollution
010504 meteorology & atmospheric sciences Coronavirus disease 2019 (COVID-19) Air pollution monitoring media_common.quotation_subject Air pollution Emergency lockdown 010501 environmental sciences Atmospheric sciences medicine.disease_cause 01 natural sciences lcsh:Technology lcsh:Chemistry Air pollutants Sensor calibration 11. Sustainability medicine General Materials Science Instrumentation Air quality index lcsh:QH301-705.5 0105 earth and related environmental sciences Morning media_common Fluid Flow and Transfer Processes Pollutant lcsh:T Process Chemistry and Technology General Engineering Particulates PM and gaseous air pollutants air pollution monitoring low-cost PM sensors emergency lockdown lcsh:QC1-999 Computer Science Applications Low‐cost PM sensors lcsh:Biology (General) lcsh:QD1-999 13. Climate action lcsh:TA1-2040 Environmental science sensor calibration lcsh:Engineering (General). Civil engineering (General) lcsh:Physics |
| Zdroj: | Applied Sciences, Vol 11, Iss 1212, p 1212 (2021) Applied Sciences Volume 11 Issue 3 |
| ISSN: | 2076-3417 |
| Popis: | Changes in air pollution in the region of the city of Novi Sad due to the COVID-19 induced state of emergency were evaluated while using data from permanently operating air quality monitoring stations belonging to the national, regional, and local networks, as well as ad hoc deployed low-cost particulate matter (PM) sensors. The low-cost sensors were collocated with reference gravimetric pumps. The starting idea for this research was to determine if and to what extent a massive change of anthropogenic activities introduced by lockdown could be observed in main air pollutants levels. An analysis of the data showed that fine and coarse particulate matter, as well as SO2 levels, did not change noticeably, compared to the pre-lockdown period. Isolated larger peaks in PM pollution were traced back to the Aralkum Desert episode. The reduced movement of vehicles and reduced industrial and construction activities during the lockdown in Novi Sad led to a reduction and a more uniform profile of the PM2.5 levels during the period between morning and afternoon air pollution peak, approximately during typical working hours. Daily profiles of NO2, NO, and NOX during the state of emergency proved lower levels during most hours of the day, due to restrictions on vehicular movement. CO during the state of the emergency mainly exhibited a lower level during night. Pollutants having transportation-dominated source profiles exhibited a decrease in level, while pollutants with domestic heating source profiles mostly exhibited a constant level. Considering local sources in Novi Sad, slight to moderate air quality improvement was observed after the lockdown as compared with days before. Furthermore, PM low-cost sensors’ usefulness in air quality assessment was confirmed, as they increase spatial resolution, but it is necessary to calibrate them at the deployment location. |
| Databáze: | OpenAIRE |
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