Fine simulation of PM 2.5 combined with NPP-VIIRS night light remote sensing and mobile monitoring data
Human activity plays a crucial role in influencing PM concentration and can be assessed through nighttime light remote sensing. Therefore, it is important to investigate whether the nighttime light brightness can enhance the accuracy of PM simulation in different stages. Utilizing PM mobile monitori...
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Veröffentlicht in: | The Science of the total environment 2024-03, Vol.914, p.169955 |
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Sprache: | eng |
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Zusammenfassung: | Human activity plays a crucial role in influencing PM
concentration and can be assessed through nighttime light remote sensing. Therefore, it is important to investigate whether the nighttime light brightness can enhance the accuracy of PM
simulation in different stages. Utilizing PM
mobile monitoring data, this study introduces nighttime lighting brightness as an additional factor in the PM
simulation model across various time periods. It compares the differences in simulation accuracy, explores the impact of nocturnal human activities on PM
concentrations at different periods of the following day, and analyzes the spatial and temporal pollution pattern of PM
in urban functional areas. The results show that (1) the incorporation of nighttime lighting brightness effectively enhances the model's accuracy (R
), with an improvement ranging from 0.04 to 0.12 for different periods ranges. (2) the model's accuracy improves more prominently during 8:00-12:00 on the following day, and less so during 12:00-18:00, as the PM
from human activities during the night experiences a strong aggregation effect in the morning of the next day, with the effect on PM
concentration declining after diffusion until the afternoon. (3) PM
is primarily concentrated in urban functional areas including construction sites, roads, and industrial areas during each period. But in the period of 8:00-12:00, there is a significant level of PM
pollution observed in commercial and residential areas, due to the human activities that occurred the previous night. |
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ISSN: | 1879-1026 |
DOI: | 10.1016/j.scitotenv.2024.169955 |