Estimation of air pollution from the OGVs and its dispersion in a coastal area

• Published in: Ocean engineering 2015-06, Vol.101, p.275-284
• Main Authors: Pokhrel, Rajib, Lee, Heekwan
• Format: Article
• Language: English
• Subjects: A2Cflow/A2Ct&d; Air pollution; Air quality; Coastal areas; Dispersions; Dynamical systems; Dynamics; Emission inventories; Estimates; Land; Marine; OGVs; PAQman
• ISSN: 0029-8018; 1873-5258
• DOI: 10.1016/j.oceaneng.2015.04.023

Air quality of Incheon area has been degraded recently, especially from the ocean going vessels (OGVs). PAQman©(Portal Air Quality management) system has been developed to estimate the air pollution from OGVs in a portal area by using field survey data, AIS (Automatic Identification System) data, activity data, etc. Atmospheric to Computational Fluid Dynamics (A2Cflow/A2Ct&d) was applied for simulating the coastal air flow and air pollution dispersion in the study domain. PAQman© was successful to estimate the emission from OGVs to 50km far from the Incheon port where air emission amount is significantly higher at anchorage points (8km, 14km, and 24km). The total amount of NOx, SO2, CO and PM10 emissions from OGVs are 42,933,187kg/year, 33,547,238kg/year, 3,364,604kg/year and 2,597,351kg/year, respectively, in 2005. Besides, sea and land breezes are frequently generated in Incheon coastal area where the penetration length of the sea and the land breeze are approximately 25–30km and 15–20km, respectively. The suction length of the sea and the land breeze were also estimated 15–20km in a similar range. It is understood that the air pollution generated by OGVs up to 25km from the Incheon harbor area would be transported to the inland area and plays a significant role to increase the air pollution level in Incheon coastal area. •Portal Air Quality management system (PAQman©) has been developed to estimate the air emission from OGVs.•Air emission amount from OGVs at the anchorage point was 2–3 times higher than the sailing mode.•Penetration length of the sea and the land breeze are approximately 25–30km and 15–20km.•Air pollution from the OGVs up to 25km from the coastal line plays distinguished role for worsening Incheon air quality.