How does ship activity affect air quality in port cities?
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Ship activity significantly impacts air quality in port cities through emissions of pollutants like PM2.5, SOx, NOx, and CO2. Studies reveal that the switch to cleaner fuels in shipping since 2020 has led to substantial reductions in shipping-related PM2.5, especially sulphate aerosols and metals, benefiting both port and urban background sites . Onshore winds can exacerbate this impact by transporting ship-emitted pollutants inland, increasing PM2.5 concentrations in areas north of Guangzhou and west of the Greater Bay Area . Analysis of air pollutant emissions in major ports suggests establishing emission control zones, using shore power, and improving fuel quality to mitigate pollution . Ship emissions, including NOx, SOx, and PM2.5, significantly affect air quality in cities like Algeciras, with maritime traffic contributing up to 20-25% of various pollutants . Setting optimal vessel speeds and mandating speed reductions near ports are recommended to reduce emissions and improve air quality in port cities .
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| Papers (5) | Insight |
|---|---|
| Ship emissions impact air quality in port cities, with onshore winds exacerbating pollution transport inland. Ship emissions contribute to PM2.5 and O3 concentrations, varying spatially and monthly. | |
| Ship activity, especially maneuvering and berthing in ports, significantly impacts air quality by emitting pollutants like CO2, SOx, NOx, and particulate matter, affecting port cities' air quality. | |
| Ship activity in port cities, such as in Chongqing, impacts air quality by emitting pollutants like CO2 and NOX, necessitating emission control measures for environmental protection and public health. | |
| Ship activity significantly impacts air quality in port cities by emitting pollutants like NOx, SOx, and PM2.5, with maritime traffic contributing up to 20-25% of certain emissions. | |
| Ship activity impacts air quality in port cities by emitting sulphate aerosols and metals, leading to PM2.5 pollution reduction through cleaner fuels, benefiting human health in coastal areas. |
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