College of Transport and Communications, Shanghai Maritime University, Shanghai 201306, China.
College of Transport and Communications, Shanghai Maritime University, Shanghai 201306, China.
Sci Total Environ. 2021 Oct 10;790:148198. doi: 10.1016/j.scitotenv.2021.148198. Epub 2021 Jun 1.
This study aims to evaluate impacts of the COVID-19 epidemic on merchant ship activities and corresponding atmospheric pollutant emissions in Shanghai port waters. Comparing AIS data from February 2019 and from February 2020, it is found that the merchant ship count and utilization frequency are reduced during the epidemic period. The epidemic could result in longer ship turnaround times because of more operation time for berthing and anchoring activities. Ship emission comparison results reveal that the cargo ship emissions are significantly reduced while container ships and tankers produce a slightly decreased emissions resulting by strict COVID-19 quarantine measures. In addition, the unit ship emission intensity is greatly reduced for ships which are under the normal cruising status while berthing and anchoring operations are associated with increased ship emissions. This implies that it is urgent to promote the use of shore power equipment for merchant ships during the epidemic period.
本研究旨在评估 COVID-19 疫情对上海港水域商船活动和相应大气污染物排放的影响。通过比较 2019 年 2 月和 2020 年 2 月的 AIS 数据，发现疫情期间商船数量和使用频率减少。由于靠泊和锚泊活动的作业时间增加，疫情可能导致船舶周转时间延长。船舶排放比较结果表明，由于严格的 COVID-19 检疫措施，货船排放量显著减少，而集装箱船和油轮排放量略有减少。此外，对于处于正常巡航状态的船舶，单位船舶排放强度大大降低，而靠泊和锚泊作业则与船舶排放量增加有关。这意味着在疫情期间，迫切需要推动使用岸电设备为商船供电。
