The Temporal and Spatial Changes of Ship-Contributed PM2.5 Due to the Inter-Annual Meteorological Variation in Yangtze River Delta, China

Ship-exhausted air pollutants could cause negative impacts on air quality, climate change, and human health. Increasing attention has been paid to investigate the impact of ship emissions on air quality. However, the conclusions are often based on a specific year, the extent to which the inter-annua...

Full description

Saved in:
Bibliographic Details
Published inAtmosphere Vol. 12; no. 6; p. 722
Main Authors Chen, Dongsheng, Liang, Dingyue, Li, Lei, Guo, Xiurui, Lang, Jianlei, Zhou, Ying
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2021
Subjects
Air
Air pollution
Air quality
Air quality models
Annual variations
Climate change
Deltas
Emission inventories
Emissions
inter-annual meteorological variation
Interannual variability
Investigations
Meteorological conditions
Meteorology
Particulate matter
PM2.5
Pollutants
Ports
Radiation
Rivers
ship emission
Ships
Summer
Weather forecasting
Wind
WRF/CMAQ
Yangtze River Delta
Yangtze River Delta
China
Online AccessGet full text

Cover

More Information
Summary:Ship-exhausted air pollutants could cause negative impacts on air quality, climate change, and human health. Increasing attention has been paid to investigate the impact of ship emissions on air quality. However, the conclusions are often based on a specific year, the extent to which the inter-annual variation in meteorological conditions affects the contribution is not yet fully addressed. Therefore, in this study, the Weather Research and Forecast model and the Community Multiscale Air Quality model(WRF/CMAQ) were employed to investigate the inter-annual variations in ship-contributed PM2.5 from 2010 to 2019. The Yangtze River Delta (YRD) region in China was selected as the target study area. To highlight the impact of inter-annual meteorological variations, the emission inventory and model configurations were kept the same for the 10-year simulation. We found that: (1) inter-annual meteorological variation had an evident impact on the ship-contributed PM2.5 in most coastal cities around YRD. Taking Shanghai as an example, the contribution varied between 3.05 and 5.74 µg/m3, with the fluctuation rate of ~65%; (2) the inter-annual changes in ship’s contribution showed a trend of almost simultaneous increase and decrease for most cities, which indicates that the impact of inter-annual meteorological variation was more regional than local; (3) the inter-annual changes in the northern part of YRD were significantly higher than those in the south; (4) the most significant inter-annual changes were found in summer, followed by spring, fall and winter.
ISSN:2073-4433
2073-4433
DOI:10.3390/atmos12060722