Spatial and Seasonal Dynamics of Ship Emissions over the Yangtze River Delta and East China Sea and Their Potential Environmental Influence

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• 作者：Qianzhu Fan ; Yan Zhang ; Weichun Ma ; Huixin Ma ; Junlan Feng ; Qi Yu ; Xin Yang ; Simon K. W. Ng ; Qingyan Fu ; Limin Chen
• 刊名：Environmental Science & Technology
• 出版年：2016
• 出版时间：February 2, 2016
• 年：2016
• 卷：50
• 期：3
• 页码：1322-1329
• 全文大小：538K
• ISSN：1520-5851

文摘

The Yangtze River Delta (YRD) port cluster is one of five major port clusters in China and is home to Shanghai port, the largest port worldwide. In this study, an automatic identification system-based model was built to estimate the ship exhaust emissions in the YRD and the East China Sea within 400 km of the coastline. In 2010, the total emissions of SO₂, NO_X, and PM_2.5 were 3.8 × 10⁵ tonnes/yr, 7.1 × 10⁵ tonnes/yr, and 5.1 × 10⁴ tonnes/yr, respectively. More than 60% and 85% of the ship emissions occurred within 100 km and 200 km of the coastline, respectively. Ship emissions also showed distinct seasonal variability. The emission of SO₂ and NO_X by ships in hot spots, such as ports and vessel traffic hubs was much higher than that on land, with maximum SO₂ and NO_X intensities from ships that were 36 times and 17 times greater, respectively, than the maximal land-based emissions. The potential impact of ship emissions at six hot spots on the surrounding atmospheric environment was estimated with the HYSPLIT model. Our study demonstrated that ship emissions have an important impact on both the entire YRD region and on greater East China.