Influence of in-port ships emissions to gaseous atmospheric pollutants and to particulate matter of different sizes in a Mediterranean harbour in Italy

摘要: Abstract Ship emissions are a growing concern, especially in coastal areas, for potential impacts on human health and climate. International mitigation strategies to curb these emission, based low-sulphur content fuels, have proven useful improve local air quality. However, the effect climate forcing is less obvious. Detailed information influence of shipping particles different sizes needed investigate quality interaction. In this work, contributions maritime atmospheric concentrations gaseous pollutants (NO, NO 2 , SO O 3 ) (sizes from 0.009 μm 30 μm) were investigated considering manoeuvring (arrival departure ships) hotelling phases (including loading/unloading activities). Results showed that size distributions two could be efficiently described, using measured data, four size-ranges. The largest contribution concentration was observed D p  = 0.35 μm. minimum at around 0.8–0.9 μm with negligible range 0.4–1 μm. comparison 2012 2014 datasets no significant changes particulate pollutant particle mass concentration. an increase number (PNC) observed. suggested harbour logistic has relevant role determining total impact nearby areas. Additionally, future policies should focus PNC represents important fraction also fuels. DOAS remote sensing proved tool directly measure ship giving estimates comparable those emission inventory approach.