Spatiotemporal variations of NO₂ and its driving factors in the coastal ports of China

Nitrogen Dioxide (NO₂) is one of the major air pollutants in coastal ports of China. Understanding the spatiotemporal varying effects of driving factors of NO₂ is vital for the implementation of differentiated air pollution control measures for different port areas. Based on the Ozone Monitoring Instrument (OMI) satellite data, the authors adopted a Geographically and Temporally Weighted Regression (GTWR) model to explore the influences of meteorological and socioeconomic factors on the NO₂ Vertical Column Concentrations (VCDs) in coastal ports of China from 2015 to 2021. The results indicate that NO₂ VCD in most ports has decreased since 2016 and the ports with serious NO₂ pollution are mainly distributed in northern China. The associations between NO₂ VCD levels and their drivers exhibit obvious spatiotemporal heterogeneity. Higher wind speed and relative humidity are more helpful to alleviate NO₂ pollution in ports of the Bohai Rim and the Pearl River Delta. Cargo throughput has more closely associated with NO₂ pollution in Beibu Gulf in recent years, yet there is no significant association found for Shanghai ports. The positive relationship between transportation emissions and NO₂ VCD is more significant in southern ports. This work provides some implications for the formulation of targeted emission reduction policies for different ports along the Chinese coast.

• Record URL:
  https://doi.org/10.1016/j.scitotenv.2023.162041
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S0048969723006575
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00489697
• Supplemental Notes:
  • © 2023 Elsevier B.V. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Zhang, Yang
  • Shi, Meiyu
  • Chen, Jihong
  • Fu, Shanshan
  • Wang, Huizhen
• Publication Date: 2023-5-1

Language

• English

Media Info

• Media Type: Web
• Features: Appendices; Figures; Maps; References; Tables;
• Pagination: 162041
• Serial:
  • Science of the Total Environment
  • Volume: 871
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0048-9697
  • Serial URL: http://www.sciencedirect.com/science/journal/00489697

Subject/Index Terms

• TRT Terms: Air quality management; Coasts; Exhaust gases; Nitrogen dioxide; Ports; Spatial analysis
• Geographic Terms: China
• Subject Areas: Environment; Freight Transportation; Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 01883157
• Record Type: Publication
• Files: TRIS
• Created Date: May 23 2023 10:12AM