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The Temporal and Spatial Changes of Ship-Contributed $PM_{2.5}$ Due to the Inter-Annual Meteorological Variation in Yangtze River Delta, China
| Content Provider | MDPI |
|---|---|
| Author | Chen, Dongsheng Liang, Dingyue Li, Lei Guo, Xiurui Lang, Jianlei Zhou, Ying |
| Copyright Year | 2021 |
| Description | 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 $PM_{2.5}$ 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 $PM_{2.5}$ in most coastal cities around YRD. Taking Shanghai as an example, the contribution varied between 3.05 and 5.74 $µg/m^{3}$, 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. |
| Starting Page | 722 |
| e-ISSN | 20734433 |
| DOI | 10.3390/atmos12060722 |
| Journal | Atmosphere |
| Issue Number | 6 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-06-04 |
| Access Restriction | Open |
| Subject Keyword | Atmosphere Atmospheric Sciences Yangtze River Delta Pm2.5 Inter-annual Meteorological Variation Wrf/cmaq Ship Emission |
| Content Type | Text |
| Resource Type | Article |
