The role of temporal scales in extracting dominant meteorological drivers of major airborne pollutants

Abstract 2.5, PM10 and O3 concentrations in 2020 at the 3 and 24 h scales respectively. In terms of the extracted dominant meteorological factor, the consistence between the analysis at the 3 and 24 h scales was relatively low, suggesting a large difference even from a qualitative perspective. In terms of the mean p 2.5 and PM10) –meteorology association was consistent, yet largely different from the temporal-scale effect on O3. Temperature was the most important meteorological factor for PM2.5, PM10 and O3 across China at both the 3 and 24 h scales. For PM2.5 and PM10, the extracted PM–temperature association at the 24 h scale was stronger than that at the 3 h scale. Meanwhile, for summer O3, due to strong reactions between precursors, the extracted O3 –temperature association at the 3 h scale was much stronger. Due to the discrete distribution, the extracted association between all pollutants and precipitation was much weaker at the 3 h scale. Similarly, the extracted PM–wind association was notably weaker at the 3 h scale. Due to precursor transport, summertime O3 –wind association was stronger at the 3 h scale. For atmospheric pressure, the pollutant–pressure association was weaker at the 3 h scale except for summer, when interactions between atmospheric pressure and other meteorological factors were strong. From the spatial perspective, pollutant–meteorology associations at 3 and 24 h were more consistent in the heavily polluted regions, while extracted dominant meteorological factors for pollutants demonstrated more difference at 3 and 24 h in the less polluted regions. This research suggests that temporal scales should be carefully considered when extracting natural and anthropogenic drivers for airborne pollution.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: The role of temporal scales in extracting dominant meteorological drivers of major airborne pollutants ; volume:23 ; number:21 ; year:2023 ; pages:14065-14076 ; extent:12 ; Atmospheric chemistry and physics ; 23, Heft 21 (2023), 14065-14076 (gesamt 12)

Contributors, Places and Time

• Creator: Xu, Miaoqing ; Yang, Jing ; Li, Manchun ; Chen, Xiao ; Lv, Qiancheng ; Yao, Qi ; Gao, Bingbo ; Chen, Ziyue

Further information

• DOI: 10.5194/acp-23-14065-2023
• URN: urn:nbn:de:101:1-2023111603202274691306
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 15.08.2025, 7:25 AM CEST